Developing Unit Patents (Class 399/119)
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Patent number: 11442375Abstract: An image forming apparatus includes a drum unit, a development unit, a supporting part, and a biasing part. The supporting part supports the development unit so as to be shiftable in directions close to and separate from the drum unit. The biasing part biases a development housing of the development unit toward the drum unit. The drum unit is attachable to and detachable from a main housing. When the drum unit is not attached to the main housing, the development unit is biased by the biasing part and is positioned closer to the drum unit than a predetermined position of the development unit when the drum unit is attached. When the drum unit is attached to the main housing, a drum frame of the drum unit pushes away the development housing against a biasing force of the biasing part to shift the development unit to the predetermined position.Type: GrantFiled: August 24, 2021Date of Patent: September 13, 2022Assignee: KYOCERA Document Solutions Inc.Inventor: Riku Minamoto
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Patent number: 11435689Abstract: A cartridge is mountable in and dismountable from a main assembly of an image forming apparatus, in which the main assembly includes an opening and an openable member including a discriminating portion. The cartridge includes a process unit including a rotatable photosensitive member and a developing roller configured to supply toner to the photosensitive member, and a developer storage unit configured to store a developer. The developer storage unit is provided with a discharge opening for permitting discharge of the stored developer to the process unit and is mountable to and dismountable from the process unit. The developer storage unit is provided with a portion-to-be-discriminated provided so as to be engaged with the discriminating portion of the openable member when the cartridge is mounted in the main assembly and the openable member is in a closed position.Type: GrantFiled: April 14, 2020Date of Patent: September 6, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Takuya Kawakami, Naoya Asanuma, Tetsuya Numata, Noriyuki Komatsu
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Patent number: 11422501Abstract: A drum cartridge includes: a drum frame to which a developing cartridge including a storage medium having an electrical contact surface is detachably attachable; a photosensitive drum; a transfer roller; and a conveying roller. The drum is rotatable about a first axis extending in a first direction and positioned at one end portion of the frame in a second direction. The transfer roller is rotatable about a second axis extending in the first direction and in contact with the drum. The conveying roller is rotatable about a third axis extending in the first direction and separated from the transfer roller in the second direction. A first opening of the frame is positioned between the transfer roller and the conveying roller in the second direction. The electrical contact surface is exposed to an outside through the first opening in a case where the developing cartridge is attached to the frame.Type: GrantFiled: August 6, 2021Date of Patent: August 23, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Takashi Shimizu, Koji Abe
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Patent number: 11392058Abstract: A development cartridge which is mountable in an image forming apparatus includes a toner container portion to store toner and a toner refilling portion to receive, from a toner refill cartridge mountable to the toner refilling portion, toner to be stored in the toner container portion. The toner refilling portion includes an inlet shutter rotatable to an inlet position at which the toner is capable of being received by the toner refilling portion from the toner refill cartridge, and a shutter protrusion provided on a surface of the inlet shutter to, while the inlet shutter is rotated, contact an object and cause feedback indicating the inlet shutter is rotated to the inlet position.Type: GrantFiled: May 28, 2019Date of Patent: July 19, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Seung il Kim, Jiwon Moon, Yongnam Ahn
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Patent number: 11372366Abstract: An image-forming apparatus includes: a main casing; a drawer movable in a first direction relative to the main casing; a process cartridge detachably mountable on the drawer; and a toner cartridge detachably mountable on the drawer. The drawer is movable between: an inner position where the drawer is accommodated in the main casing; and an outer position where a part of the drawer is located outside the main casing. The process cartridge includes: a photosensitive drum rotatable about an axis extending in a second direction crossing the first direction when the process cartridge is mounted on the drawer; and a developing device configured to supply toner to the photosensitive drum. The toner cartridge is configured to store the toner.Type: GrantFiled: November 17, 2020Date of Patent: June 28, 2022Assignee: Brother Kogyo Kabushiki KaishaInventors: Shougo Sato, Daisuke Maeta
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Patent number: 11333998Abstract: A drum cartridge is configured to be detachably mounted on an apparatus main body in a state where a toner cartridge is mounted on the drum cartridge. A first shutter and a second shutter are configured such that: when the drum cartridge is mounted onto the apparatus main body in a state where the toner cartridge is mounted on the drum cartridge, the first shutter moves from a first closed position to a first open position and the second shutter moves from a second closed position to a second open position, and when the drum cartridge is detached from the apparatus main body in a state where the toner cartridge is mounted on the drum cartridge, the first shutter moves from the first open position to the first closed position and the second shutter moves from the second open position to the second closed position.Type: GrantFiled: August 14, 2020Date of Patent: May 17, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasumasa Fujii, Takashi Arakawa, Shougo Sato
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Patent number: 11327432Abstract: A process cartridge includes a first unit including an image bearing member configured to carry an electrostatic latent image, and a second unit including a developer bearing member configured to develop the electrostatic latent image carried on the image bearing member into a toner image, the second unit being capable of being mounted on the first unit in a mounting direction. The first unit includes a moving member that moves the second unit mounted on the first unit at a mounting position to a detachment position. The second unit includes a storage unit that stores information about the second unit. The moving member is disposed on a first side of the process cartridge in a longitudinal direction of the image bearing member. An electrode of the storage unit is disposed on a second side of the process cartridge in the longitudinal direction.Type: GrantFiled: March 30, 2021Date of Patent: May 10, 2022Assignee: Canon Kabushiki KaishaInventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
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Patent number: 11314186Abstract: An image forming apparatus includes an image bearing member, a developer container, a developing portion, a replenishment port configured to allow replenishment of one-component developer from a replenishment container, a conveyance portion configured to convey the developer accepted for replenishment through the replenishment port toward the developing portion, a developer remainder amount detection portion whose output value changes on a basis of an amount of developer accommodated in the developer container. A controller changes a developer conveyance speed of the conveyance portion in a conveyance operation on a basis of the output value of the developer remainder amount detection portion, the conveyance operation being an operation of conveying developer toward the developing portion by the conveyance portion and is performed before the image forming operation is started.Type: GrantFiled: September 25, 2020Date of Patent: April 26, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Nobuo Oshima, Satoru Motohashi
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Patent number: 11300920Abstract: A drum cartridge includes: a photosensitive drum rotatable about a drum axis extending in an axis direction; a drum cleaner including a cleaning member cleaning a circumferential surface of the photosensitive drum, and a cleaning housing accommodating transfer residual toner removed from the circumferential surface of the photosensitive drum by the cleaning member; a first drum side plate supporting a first end portion of the photosensitive drum; a second drum side plate located distant from the first drum side plate in the axis direction and supporting a second end portion of the photosensitive drum; a pipe located between the first drum side plate and the second drum side plate in the axis direction and extending in the axis direction; and a conveyor device conveying the transfer residual toner from the cleaning housing to the pipe.Type: GrantFiled: January 20, 2021Date of Patent: April 12, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Enao Yamada, Shougo Sato
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Patent number: 11294320Abstract: An image forming apparatus includes an apparatus body including a mounting portion, a drive transmission member provided on the apparatus body, and a cover portion configured to cover the drive transmission member. The mounting portion is configured to accommodate a cartridge including an input coupling portion and an input gear portion. The drive transmission member includes an output coupling portion configured to engage with the input coupling portion, and an output gear portion configured to engage with the input gear portion. The cover portion is located between the mounting portion and the drive transmission member and includes a first opening configured to expose the output coupling portion, and a second opening configured to expose the output gear portion.Type: GrantFiled: September 21, 2020Date of Patent: April 5, 2022Assignee: Canon Kabushiki KaishaInventors: Ryota Shibuya, Goshi Ozaki, Yusuke Kai
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Patent number: 11275334Abstract: Provided is an image forming apparatus including a developer that performs development with toner, the image forming apparatus including a vibrator that applies vibrations to a vibrated portion of the developer, and a hardware processor that controls the vibrator. The hardware processor determines a toner leakage level based on a result of detecting toner leakage adhering to a sheet caused by the image forming apparatus, settles a vibrating condition of the vibrator in accordance with the toner leakage level, and causes the vibrator to perform a vibrating operation under the settled vibrating condition.Type: GrantFiled: May 14, 2021Date of Patent: March 15, 2022Assignee: KONICA MINOLTA, INC.Inventors: Kazutoshi Kobayashi, Tomohiro Kawasaki, Keiki Katsumata, Kei Okamura
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Patent number: 11275336Abstract: An image-forming apparatus includes a developing cartridge, a photosensitive drum, a drawer and a driving portion. The developing cartridge includes: a developing roller rotatable about an axis extending in a first direction; a casing; a first cam positioned at one end of the casing in the first direction; and a pressing surface pivotable in accordance with pivotal movement of the first cam. The drawer includes: a drawer frame to which the developing cartridge is detachably attachable; and a depressed surface with which the pressing surface is contactable. The driving portion is configured to pivotally move the first cam about an axis extending in the first direction. The pressing surface is configured to contact the depressed surface to move the developing roller from a contacting position in contact with the photosensitive drum to a separated position in separation from the photosensitive drum by the pivotal movement of the first cam.Type: GrantFiled: April 30, 2021Date of Patent: March 15, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuwen Wang
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Patent number: 11249438Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.Type: GrantFiled: December 10, 2020Date of Patent: February 15, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazutoshi Nakamura, Yasuo Fukamachi, Masaaki Furukawa
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Patent number: 11226581Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.Type: GrantFiled: August 13, 2020Date of Patent: January 18, 2022Assignee: Brother Kogyo Kabushiki KaishaInventors: Shougo Sato, Hirotaka Mori, Makoto Souda
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Patent number: 11209745Abstract: An image forming apparatus may include a photosensitive member, a developing device including a developing roller, pressing members configured to engage with the developing device and springs configured to urge the pressing members. In some examples, each of the pressing members may be configured to contact and move the developing device between various positions based on the urging of the springs. Additionally or alternatively, various ends of a contact surface of the developing roller configured to contact developer may be disposed relative to an axis line of the developing roller and pressing surfaces of the pressing members.Type: GrantFiled: November 18, 2019Date of Patent: December 28, 2021Assignee: Brother Kogyo Kabushiki KaishaInventors: Yoh Nishimura, Shougo Sato
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Patent number: 11209746Abstract: An image forming apparatus includes a first urging member including a first end portion and a second end portion positioned on an opposite side of the first end portion, the first urging member configured to urge a first pressing member to a first pressing position, and a second urging member including a third end portion and a fourth end portion, the second urging member configured to urge a second pressing member to a second pressing position. The second end portion is arranged more distant from the first pressing member than the first end portion and is arranged between the first pressing member and the second pressing member in an axial direction, and the fourth end portion is arranged more distant from the second pressing member than the third end portion and is arranged between the first pressing member and the second pressing member in the axial direction.Type: GrantFiled: September 11, 2020Date of Patent: December 28, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Shinkichi Yamamoto
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Patent number: 11204575Abstract: An image forming apparatus includes a tray movable between a housed position and a drawn-out position. The tray includes a frame having two side portions extending in a moving direction of the tray and to which a developing cartridge is detachably attachable, an image bearing member supported by the frame so as to face a developer bearing member when the developing cartridge is attached to the frame, a charging unit, a tray-side metal terminal electrically connected to a memory medium when the developing cartridge is attached to the frame, and a tray guide portion provided on the two side portions along a moving direction of the tray. A body-side metal terminal is provided in a body, which includes a rail portion to face the tray guide portion and enable the tray to move. The tray-side metal terminal contacts the body-side metal terminal at a position below the tray guide portion.Type: GrantFiled: July 24, 2020Date of Patent: December 21, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Yukio Kubo, Yu Fukasawa, Daisuke Abe
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Patent number: 11199809Abstract: An image forming device, including: a housing; a drawer movable between an inside position at which the drawer is located inside the housing and an outside position at which the drawer is located outside the housing; a drum cartridge including a photoconductive drum and a developer roller and mountable on the drawer; a toner cartridge storing toner to be supplied to the developer roller and mountable on the drawer, wherein the drawer includes a first guide that guides the toner cartridge in mounting the toner cartridge on the drawer, and wherein the drum cartridge includes a second guide connected to the first guide in a state in which the drum cartridge is mounted on the drawer, the second guide being configured to guide the toner cartridge in mounting the toner cartridge on the drawer in the state in which the drum cartridge is mounted on the drawer.Type: GrantFiled: August 26, 2020Date of Patent: December 14, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna Taguchi, Shougo Sato
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Patent number: 11188010Abstract: A developer supply container detachably mountable to a developer receiving apparatus and settable in a developer receiving apparatus by a setting operation including at least a rotation toward a setting position, includes a containing portion for containing the developer; a rotatable discharging member for discharging the developer out of said containing portion; drive transmitting means, engageable with a driving gear provided in said developer receiving apparatus and rotatable in a direction opposite the setting direction, for transmitting a rotating force from said driving gear to said discharging member.Type: GrantFiled: July 6, 2017Date of Patent: November 30, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Toshiaki Nagashima, Katsuya Murakami, Ayatomo Okino
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Patent number: 11143983Abstract: A toner supplying apparatus used in an image forming apparatus is provided. The toner supply apparatus includes a plurality of toner containers, a plurality of fixing members, an operating member, and a driving force. Each of the plurality of toner containers includes a fixing recess. The plurality of fixing members are to be selectively coupled to the fixing recesses of the plurality of toner containers. The operating member is to slide with respect to the plurality of toner containers, and to operate at least one of the plurality of fixing members to separate the operated fixing members from the coupled fixing recess. The driving device is to move the operating member.Type: GrantFiled: October 1, 2018Date of Patent: October 12, 2021Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jae Won Choi, Han Jun Lee
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Patent number: 11106175Abstract: An image forming apparatus includes a photoconductor unit, a developing device, a space maintaining device, a pressing device, a securing device, and at least one connecting device. The photoconductor unit includes a photoconductor and a first part. The developing device includes a developing roller and a second part. The space maintaining device has a third part, is provided in the photoconductor unit or the developing device, and is brought into contact with the first part or the second part at the third part so as to maintain a space between the developing roller and the photoconductor. The pressing device presses the developing device toward the photoconductor unit. The securing device is removable. The at least one connecting device secures the photoconductor unit and the developing device by using the securing device so as to connect the photoconductor unit and the developing device to each other.Type: GrantFiled: July 9, 2020Date of Patent: August 31, 2021Assignee: FUJIFILM Business Innovation Corp.Inventor: Arichika Tanaka
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Patent number: 11036164Abstract: A toner cartridge includes a container having an opening, a flexible bag in which toner is received, a sealing portion configured to seal the flexible bag, and an extension extending from an edge of the sealing portion, the flexible bag being accommodated in the container so that the sealing portion faces the opening, a rotatable member rotatably provided on the container, a movable member connected to the extension and being movable from a first position close to the opening to a second position far from the opening in a longitudinal direction of the container, a rope having a first end portion connected to the rotatable member and a second end portion connected to the movable member, and a bias member configured to elastically bias the rotatable member to rotate in a direction in which the rope is switched from an unwound state to a wound state.Type: GrantFiled: November 12, 2018Date of Patent: June 15, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Woong Yong Choi, Seung Gweon Lee, Jin Hwa Hong
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Patent number: 10976699Abstract: An image forming apparatus includes: a housing; a drum cartridge; a developing cartridge; a drawer movable between an inner position and an outer position; and a lock member provided on the drawer and movable between a lock position at which the lock member locks the drum cartridge to the drawer, and a release position at which a lock between the drum cartridge and the drawer is released. The lock member includes an operation portion for moving the lock member between the lock position and the release position. The developing cartridge includes a cover member that covers at least a portion of the operation portion in a state in which the drum cartridge is mounted to the drawer, and the developing cartridge is mounted to the drum cartridge.Type: GrantFiled: June 22, 2020Date of Patent: April 13, 2021Assignee: Brother Kogyo Kabushiki KaishaInventor: Shougo Sato
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Patent number: 10969730Abstract: An image forming apparatus includes an apparatus body, a first cartridge detachably attached to the apparatus body, a second cartridge detachably attached to the apparatus body in a state where the first cartridge has been attached to the apparatus body, a guide unit configured to guide the first cartridge, and a drawer member configured to be inserted to and drawn out of the apparatus body in a direction intersecting the axial direction. The drawer member is inserted to the apparatus body in a state supporting the second cartridge. The first cartridge includes an engagement portion and the second cartridge includes an engaged portion, and the second cartridge is supported by the first cartridge via engagement of the engagement portion and the engaged portion.Type: GrantFiled: February 24, 2020Date of Patent: April 6, 2021Assignee: Canon Kabushiki KaishaInventors: Kazutaka Sueshige, Tatsuro Harada, Takayuki Yada, Tetsuo Uesugi, Toru Oguma
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Patent number: 10962924Abstract: A developing roller and a photosensitive drum are aligned in a second direction different from a first direction. A toner storage portion stores toner to be supplied to the photosensitive drum by the developing roller. A waste-toner storage portion stores toner conveyed through a conveyance pipe. The waste-toner storage portion has a main portion and a protruding portion protruding from the main portion in the first direction. A drum cartridge has a guide portion configured to guide the protruding portion of the waste-toner storage portion when a developing cartridge is being mounted on the drum cartridge. The guide portion includes first and second guides. The first guide extends in a third direction different from the first and second directions. The second guide continues from the first guide and is located closer to the photosensitive drum than the first guide is. The second guide extends in the second direction.Type: GrantFiled: January 10, 2020Date of Patent: March 30, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Shougo Sato, Hideshi Nishiyama
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Patent number: 10955791Abstract: An image forming apparatus, having a first photosensitive drum, a first developing roller, a first shifting member movable between a contacting position and a separating position, a motor, a first joint, a first clutch operable in one of a transmittable condition and a discontinuing condition, a first shifting cam rotatable between a first position, in which the first shifting cam locates the first shifting member at the contacting position, and a second position, in which the first shifting cam locates the first shifting member at the separating position, and a first switching cam rotatable between a third position, in which the first switching cam places the first clutch in the transmittable condition, and a fourth position, in which the first switching cam places the first clutch in the discontinuing condition, alongside the first shifting cam rotating between the first position and the second position, is provided.Type: GrantFiled: June 28, 2019Date of Patent: March 23, 2021Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroshi Nakano, Masahito Saeki, Kotaro Haruta
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Patent number: 10908525Abstract: A bearing component for rotatably receiving a rotating shaft on an end of a rotating unit includes a component body, an inner protrusion, and one or more outer protrusions. The component body has a recess into which the rotating shaft is rotatably inserted. The inner protrusion protrudes from a wall portion of the recess facing an end surface of the rotating shaft. The inner protrusion receives an axial load by the rotating shaft. The outer protrusions protrude from an outer surface of the component body opposite to the recess. The one or more outer protrusions are in contact with a holding unit. A contact portion between the outer protrusions and the holding unit is offset from a contact portion position between the inner protrusion and the end surface. The contact portion between at least one of the outer protrusions and the holding unit has a non-planar shape.Type: GrantFiled: December 20, 2019Date of Patent: February 2, 2021Assignee: FUJI XEROX CO.. LTD.Inventors: Kazuki Kuramoto, Keiichiro Sato, Shuhei Yamazaki, Hirofumi Hamada, Toru Morioka
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Patent number: 10884356Abstract: To develop a conventional structure of a toner cartridge. The toner cartridge includes a container and an open/close member. The container includes an accommodating portion for accommodating toner, and a discharge opening. The open/close member includes a closing portion for closing the discharge opening, and a closing force receiving portion. The open/close member a movable relative to the container between a closing position for causing the closing portion to the close the discharge opening and an opening position for causing the closing portion to open the discharge opening. The open/close member including a leading end portion and a trailing end portion which are on downstream and upstream sides of the open/close member with respect to a closing direction in which the open/close member moves to close the discharge opening, respectively.Type: GrantFiled: February 26, 2020Date of Patent: January 5, 2021Assignee: Canon Kabushiki KaishaInventors: Takashi Kimura, Hisayoshi Kojima, Yosuke Kashiide
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Patent number: 10859943Abstract: A container mounting structure includes a container, a container mounting portion, and a regulating section. The container has an opening, extends in one direction, and contains powder. When the container disposed at a predetermined temporarily placed position is rotated in a circumferential direction of the container, the container is mounted to the container mounting portion and the opening of the container is, with the container mounting portion, caused to be exposed. The regulating section regulates the rotation of the container in the circumferential direction in a case where the container is disposed at a position deviated from the temporarily placed position.Type: GrantFiled: April 26, 2019Date of Patent: December 8, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Akihiro Kobayashi, Takuji Matsumoto
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Patent number: 10859940Abstract: An image forming apparatus, having first, second, and third photosensitive drums, a first developing cartridge including a first developing roller, a second developing cartridge including a second developing roller, a third developing cartridge including a third developing roller, an exposure device, a conveyer, and a moving mechanism, is provided. The first developing roller, the second developing roller, and the third developing roller are arranged in the recited order from upstream to downstream in a moving direction for the sheet to be conveyed. When the second developing roller is at the separated position thereof, the second developing cartridge coincides with a light path of the laser beam for scanning the first photosensitive drum. When the third developing roller is at the separated position thereof, the third developing cartridge coincides with a light path of the laser beam for scanning the second photosensitive drum.Type: GrantFiled: December 17, 2019Date of Patent: December 8, 2020Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Masahito Saeki, Toshiyuki Sano, Shintaro Sakaguchi, Kotaro Haruta, Shoichiro Nishimura
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Patent number: 10852689Abstract: A powder container is for use with an image forming apparatus, and the image forming apparatus includes a driving protrusion that is rotatable and that protrudes toward an upstream side in an insertion direction in which the powder container is inserted. The powder container includes a container body to store powder, a cap attached to the container body, and a transmitted structure provided on the cap to contact the driving protrusion. The transmitted structure extends outward from an outer circumference of the powder container. The cap is rotatable relative to the container body in a predetermined angular range. The rotation of the cap relative to the container body is restricted so that the container body rotates along with the rotation of the cap when the rotation of the cap exceeds the predetermined angular range.Type: GrantFiled: April 7, 2020Date of Patent: December 1, 2020Assignee: RICOH COMPANY, LTD.Inventors: Nobuo Takami, Kiyonori Tsuda, Ryoichi Teranishi, Junichi Matsumoto, Toshio Koike, Yutaka Takahashi, Junji Yamabe, Akihiro Kawakami, Keinosuke Kondoh, Atsushi Inoue
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Patent number: 10845752Abstract: Disclosed herein is an image forming apparatus. The image forming apparatus includes at least one pressing unit configured to bring the developing roller and the photoreceptor in contact with each other, an operating unit which is configured to be in an operating position during which a pressing force of the pressing unit is generated, and a standby during at which the pressing force is released, and a cover unit detachably provided to one side of the developing device and configured to guide movement of the operating unit to the operating position. By this configuration, operation of the operating unit is linked with an operation of detachment or attachment of the cover unit.Type: GrantFiled: August 31, 2015Date of Patent: November 24, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Wan Ho Lee, Jin Ho Park, Han Jun Lee
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Patent number: 10824097Abstract: A drum cartridge that is mountable to and demountable from a main body of an image forming apparatus, the drum cartridge including: a photosensitive drum rotatable about a first axis extending in a first direction; and a first conveying roller rotatable about a second axis extending in the first direction, the first conveying roller being in contact with a second conveying roller of the image forming apparatus and being configured to convey a sheet, which is sandwiched between the first conveying roller and the second conveying roller, toward the photosensitive drum in a state where the drum cartridge is mounted on the main body, in which the drum cartridge has a guide groove into which an end portion of the second conveying roller in the first direction is inserted in the state where the drum cartridge is mounted on the main body.Type: GrantFiled: September 25, 2019Date of Patent: November 3, 2020Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Shuhei Hatano, Koyo Yamamoto
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Patent number: 10775737Abstract: A replaceable unit for an electrophotographic image forming device includes a housing having a reservoir for holding toner. An electrical connector is positioned on a first side of the housing. The electrical connector includes an electrical contact for contacting a corresponding electrical contact in the image forming device and a magnetic sensor electrically connected to the electrical contact. The electrical connector is movable between a first position and a second position. When the electrical connector moves from the first position to the second position, the electrical contact of the replaceable unit moves from a retracted position to an operative position. When the electrical connector moves from the first position to the second position, the magnetic sensor moves from a misaligned position to an aligned position with a point in a path of movement of a magnet for sensing a magnetic field of the magnet.Type: GrantFiled: April 23, 2020Date of Patent: September 15, 2020Assignee: Lexmark International, Inc.Inventors: James Richard Leemhuis, Randal Scott Williamson
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Patent number: 10747144Abstract: To develop a conventional structure of a toner cartridge. Toner cartridge includes a container and an open/close member. The container includes an accommodating portion, a discharge opening and a cartridge side guide. the open/close member includes a closing portion and an engaging portion and is movable between a closing position and an opening position. When the toner cartridge is dismounted from a receiving apparatus, the engaging portion receives a force for moving the open/close member from the opening position toward the closing position, the engaging with a receiving apparatus side guide of the receiving apparatus.Type: GrantFiled: March 27, 2019Date of Patent: August 18, 2020Assignee: Canon Kabushiki KaishaInventors: Takashi Kimura, Hisayoshi Kojima, Yosuke Kashiide
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Patent number: 10725400Abstract: With a mounting operation of a supply container, a supported portion 11b of a developer receiving portion 11 is supported by a receipt supporting portion 30c of a lifting portion 30. With further mounting operation, a shutter sliding portion 30b of the lifting portion 30 slides on a shutter inclined portion 4f of a shutter 4. The developer receiving portion 11 is displaced so as to bring a receiving opening into communication with a discharge opening by operating, using the shutter 4, the lifting portion 30 supporting the supported portion 11b of the developer receiving portion 11. By this, a load required for movement of the developer receiving portion 11 is reduced to achieve smooth mounting of the supply container.Type: GrantFiled: March 15, 2019Date of Patent: July 28, 2020Assignee: Canon Kabushiki KaishaInventors: Yohei Gamo, Tsukasa Mine, Akihito Kamura, Koji Katayama, Masato Yamaoka, Yusuke Oizumi, Manabu Jimba, Ayatomo Okino, Nobuyuki Yomoda, Keisuke Isobe
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Patent number: 10719047Abstract: An apparatus includes a forming unit, a cleaning mechanism that cleans a transparent member of a scanning device of the forming unit, a counter that counts a number of image-formed sheets, which are sheets of a recording medium on which images have been formed by the forming unit, the counter performing counting with a first count value in a case where the forming unit performs image formation in a first mode and performing counting with a second count value larger than the first count value in a case where the forming unit performs image formation in a second mode higher in image forming speed than the first mode, and a control unit that controls the cleaning mechanism to clean the transparent member in response to the number of image-formed sheets counted by the counter reaching a predetermined number of sheets.Type: GrantFiled: September 13, 2019Date of Patent: July 21, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Yuichi Seki
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Patent number: 10705484Abstract: A developing device includes a developing roller, a cover to cover the developing roller from above the developing roller, a filter to cover a vent of the cover to filter air and collect toner passing through the vent, and a pressing member engaged with the cover in which the filter is installed. The cover includes a projecting support to support the filter. The pressing member holds the filter between the pressing member and the cover. The projecting support is projected from one end toward the other end of the vent in a transverse direction of the vent at a part of the cover in a longitudinal direction of the developing roller to block the vent, and cantilevered on the one end. A gap is provided between a tip of the projecting support and an inner edge of the cover on the other end.Type: GrantFiled: September 19, 2019Date of Patent: July 7, 2020Assignee: RICOH COMPANY, LTD.Inventors: Yuki Oshikawa, Yoshihiro Fujiwara, Naohiro Kawashima, Ryusuke Mase, Yuuki Tsuchiya
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Patent number: 10698362Abstract: Provided is a development cartridge mounted on a main body of an image forming apparatus. The development cartridge includes a photoconductive unit, a developing unit coupled to the photoconductive unit so as to rotate to a development position and a release position, and an elastic member that provides an elastic force to maintain the developing unit at the development position. A switching member is mounted on a rotation shaft of the developing roller to be rotatable about a rotation shaft of a developing roller. The switching member is switched to a first state where the switching member contacts an interfering portion of the photoconductive unit and rotates the developing unit to the release position and to a second state where the switching member is separated from the interfering portion and allows the developing unit to rotate to the development position due to the elastic force of the elastic member.Type: GrantFiled: June 5, 2017Date of Patent: June 30, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Sang-hoon Lee, Seung-beom Yang, Seung-gweon Lee
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Patent number: 10698343Abstract: A developer replenishment container attachable to and detachable from a container receiver of a developer supply device is provided. The developer replenishment container includes a containing cover portion, a containing portion, and a discharge mechanism configured to deliver a developer to a discharge port while loosening the developer. The containing portion has a circumferential wall and a rotational force input portion. The circumferential wall is provided with a spiral protrusion. The discharge mechanism has a cam member and a biasing member including a bellows portion. A discharge channel is formed between the cam member and the bellows portion. The bellows portion extends and contracts in accordance with reciprocating movement of the cam member along an axial direction of the circumferential wall.Type: GrantFiled: August 20, 2019Date of Patent: June 30, 2020Assignee: KONICA MINOLTA, INC.Inventor: Takeru Kinoshita
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Patent number: 10691062Abstract: A replaceable unit for use in an electrophotographic image forming device according to one example embodiment includes a photoconductor unit having a rotatable photoconductive drum and a developer unit having a rotatable developer roll that is positioned to supply toner to the photoconductive drum. An electrical contact is positioned to contact a corresponding electrical contact in the image forming device when the replaceable unit is installed in the image forming device. A spring mechanically biases the developer unit relative to the photoconductor unit applying a bias force on the developer roll toward the photoconductive drum. The spring is electrically conductive and forms a portion of an electrical path from the electrical contact of the replaceable unit to an imaging component of the replaceable unit for carrying voltage from the electrical contact of the replaceable unit to the imaging component of the replaceable unit.Type: GrantFiled: March 7, 2019Date of Patent: June 23, 2020Assignee: Lexmark International, Inc.Inventors: Mark William Amann, Brian Lester Boettcher, Gregory Alan Cavill, David Lee Merrifield
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Patent number: 10649398Abstract: A process cartridge includes: a drum cartridge including a photosensitive drum; and a toner cartridge which is mountable on the drum cartridge and stores toner, wherein the drum cartridge includes: a cleaner configured to collect waste toner on the photosensitive drum; a waste toner conveyance tube configured to convey the waste toner collected by the cleaner; and a developing unit which includes a developing roller configured to supply toner to the photosensitive drum and is swingable about a swing axis with respect to the photosensitive drum, and wherein the toner cartridge has a waste toner storing chamber for storing the waste toner conveyed by the waste toner conveyance tube.Type: GrantFiled: April 24, 2019Date of Patent: May 12, 2020Assignee: Brother Kogyo Kabushiki KaishaInventor: Shougo Sato
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Patent number: 10649389Abstract: An assembly for an image forming device includes a first replaceable unit and a second replaceable unit matable with the first replaceable unit. One of the first and second replaceable units includes a reservoir for storing toner and the other of the first and second replaceable units is configured to receive toner from the one of the first and second replaceable units. An electrical connector on the first replaceable unit is movable between a retracted position and an operative position. The electrical connector on the first replaceable unit includes an electrical contact for contacting a corresponding electrical contact in the image forming device when the electrical connector is in the operative position. A cam on the second replaceable unit is positioned to engage the electrical connector and to cause the electrical connector to move from the retracted position to the operative position when the first and second replaceable units mate.Type: GrantFiled: April 12, 2019Date of Patent: May 12, 2020Assignee: Lexmark International, Inc.Inventors: Brian Scott Carpenter, Gregory Alan Cavill, James Richard Leemhuis
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Patent number: 10649399Abstract: A replaceable unit for an electrophotographic image forming device includes a housing having a reservoir for holding toner. An electrical connector is positioned on a first side of the housing. The electrical connector includes an electrical contact for contacting a corresponding electrical contact in the image forming device and a magnetic sensor electrically connected to the electrical contact. The electrical connector is movable between a first position and a second position. When the electrical connector moves from the first position to the second position, the electrical contact of the replaceable unit moves from a retracted position to an operative position. When the electrical connector moves from the first position to the second position, the magnetic sensor moves from a misaligned position to an aligned position with a point in a path of movement of a magnet for sensing a magnetic field of the magnet.Type: GrantFiled: April 12, 2019Date of Patent: May 12, 2020Assignee: Lexmark Internatioanl, Inc.Inventors: James Richard Leemhuis, Randal Scott Williamson
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Patent number: 10620569Abstract: A developer supply container includes a developer accommodating body, a developer discharging body, a storing portion, provided a pump portion capable of changing a volume thereof with a reciprocating operation, and a rotatable member including a plurality of blades. The number of said blades is not less twice the number of times, per rotation of the rotatable member, of the reciprocating operation of the pump portion.Type: GrantFiled: April 18, 2019Date of Patent: April 14, 2020Assignee: Canon Kabushiki KaishaInventors: Manabu Jimba, Yusuke Oizumi, Kuniyoshi Sugawara
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Patent number: 10613453Abstract: To develop a conventional structure of a toner cartridge. The toner cartridge includes a container and an open/close member. The container includes an accommodating portion for accommodating toner, and a discharge opening. The open/close member includes a closing portion for closing the discharge opening, and a closing force receiving portion. The open/close member a movable relative to the container between a closing position for causing the closing portion to the close the discharge opening and an opening position for causing the closing portion to open the discharge opening. The open/close member including a leading end portion and a trailing end portion which are on downstream and upstream sides of the open/close member with respect to a closing direction in which the open/close member moves to close the discharge opening, respectively.Type: GrantFiled: March 25, 2019Date of Patent: April 7, 2020Assignee: Canon Kabushiki KaishaInventors: Takashi Kimura, Hisayoshi Kojima, Yosuke Kashiide
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Patent number: 10585388Abstract: A developing cartridge is detachably attachable to an image forming apparatus. The developing cartridge includes a frame, a toner-accommodating section for accommodating toner, a developing roller for carrying toner, a thickness-regulating blade for regulating thickness of toner carried on the developing roller, a pivoting member, and an urging spring. The pivoting member has a first end portion and a second end portion. The first end portion of the pivoting member is pivotably coupled to the frame. The urging spring is disposed between the frame and the pivoting member. The urging spring is configured to urge the pivoting member in a direction that the second end portion of the pivoting member moves away from the frame.Type: GrantFiled: January 15, 2019Date of Patent: March 10, 2020Assignee: Brother Kogyo Kabushiki KaishaInventor: Shougo Sato
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Patent number: 10566507Abstract: A device for depositing an unpackaged semiconductor die (“die”) onto a substrate. The device includes a developing unit adjacent to a drum. The developing unit has wrapped thereon a diced semiconductor wafer including at least one die. The developing unit is configured to move laterally in a direction of a longitudinal axis of the developing unit to transfer the at least one die to the drum.Type: GrantFiled: January 12, 2018Date of Patent: February 18, 2020Assignee: Rohinini, LLCInventor: Cody Peterson
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Patent number: 10558161Abstract: An engaging portion 30 is provided which is engageable with a portion-to-be-engaged 11b a displaceable integrally with a developer receiving portion 11 with a mounting operation of a developer supply container 1 to displace 11 in an upward direction U to bring a receiving opening into communication with a discharge opening. An engaging portion 30 includes a first engagement surface 31a extending in the upward direction U as going toward a developer accommodating portion of the developer supply container 1, and a second engagement surface 32a provided at a position closer to the developer accommodating portion than the first engagement surface 31a. When the receiving opening in communication with a shutter opening, a height of an end of the first engagement surface 31a close to the developer accommodating portion is higher than the second engagement surface 32a.Type: GrantFiled: March 15, 2019Date of Patent: February 11, 2020Assignee: Canon Kabushiki KaishaInventors: Hiromasa Katayama, Manabu Jimba, Akihito Kamura, Katsuya Murakami
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Patent number: 10558145Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.Type: GrantFiled: April 23, 2019Date of Patent: February 11, 2020Assignee: RICOH COMPANY, LTD.Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita