Drum Mount Patents (Class 399/117)
  • Patent number: 10942470
    Abstract: A developing apparatus, includes: a developer bearing member that encloses a magnet roller having a plurality of magnetic poles and is rotatable; a wall that forms a developer storing chamber for storing a magnetic developer therein; a restricting member configured to restrict a layer thickness of the magnetic developer carried by the developer bearing member; and a moving member configured to move the magnetic developer carried by the developer bearing member before the magnetic developer is restricted by the restricting member, the moving member being brought into contact with a surface of the developer bearing member, the moved developer being on the developer veering member after the moving member moved the developer on the developer bearing member, wherein the moving member is disposed at a position opposed to any of the magnetic pole positions of the plurality of magnetic poles.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 9, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Fujino, Naoki Fukushima, Atsushi Toda, Daisuke Baba, Yosuke Kishi, Masahito Kato, Masaki Hirose
  • Patent number: 10942484
    Abstract: A first joint rotatably couples a link member with a first exposure head unit. A second joint rotatably couples the link member with a second exposure head unit. A first rotation center of the first exposure head unit is closer to an end of a top cover than a second rotation center of the second exposure head unit is. The link member is configured to, when the top cover moves from a closed position to an open position, cause the first exposure head unit to rotatably move in a direction in which a first optical member approaches the end of the top cover and cause the second exposure head unit to rotatably move in a direction in which a second optical member approaches the end. A distance between the first rotation center and the first joint is larger than a distance between the second rotation center and the second joint.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: March 9, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Junichi Hiraoka
  • Patent number: 10884372
    Abstract: An image forming apparatus includes a cover pivotable on a body to close an opening at a closed position and open the opening at an open position, first and second replacement units having photosensitive drums, an optical print head pivotable in one direction, a spring, and a stopper. The spring applies, to the optical print head, a force for allowing the optical print head to pivot toward the one direction so that a movement of the optical print head with a pivotal movement of the cover from the open position to the closed position is prevented from being inhibited by the first developing cartridge. The optical print head, having the force applied the optical print head by the spring, so that movement of the optical print head with pivotal movement of the cover from the open to the closed position is prevented from being inhibited by the second developing cartridge.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: January 5, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuya Tamura, Takehiro Ishidate, Hitoshi Iwai, Yuta Okada, Toshiki Momoka, Shinichiro Hosoi, Daisuke Aruga, Shinichiro Kaikawa
  • Patent number: 10627769
    Abstract: A rotatable developer carrying member unit includes a rotatable developer carrying member and a rotational force receiving member for receiving a rotational force for rotating the rotatable developer carrying member. The rotational force receiving member includes a rotational force receiving portion for receiving the rotational force at one end portion side thereof and a portion-to-be-engaged at another end portion side thereof. One of the engaging portion and the portion-to-be-engaged includes a male screw portion and the other of the engaging portion and the portion-to-be-engaged includes a female screw portion.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: April 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Kikuchi, Yoshiyuki Batori
  • Patent number: 10620565
    Abstract: A toner container includes a container body, a first bearing portion, and a rotational member. The container body in which toner is stored includes a pair of side walls that face one another across a specific distance. The first bearing portion is provided in an inner surface of at least one side wall of the pair of side walls. The rotational member includes a rotational shaft that is rotatably supported by the first bearing portion. The first bearing portion includes a terminal end portion on one side and an open portion on another side, and further includes a first long groove in which the rotational shaft is inserted, and a projection protruding from a groove bottom surface that extends from the open portion to the terminal end portion of the first long groove.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: April 14, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Akira Ishii
  • Patent number: 10613465
    Abstract: A drum cylinder unit includes a photoconductive drum and a flange member. The flange member includes a fixing portion fixed to an end of the photoconductive drum, a cylindrical portion which forms a hollow portion therein, a groove portion provided at an edge of the cylindrical portion, and a gear portion. The groove portion and the hollow portion open to an outside of an axial direction of the photoconductive drum.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 7, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigemi Kamoshida, Ken Kikuchi, Jun Miyamoto, Tomonori Mori, Daisuke Abe
  • Patent number: 10539924
    Abstract: A process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum. The coupling member is movable between a position in which an axis of the coupling member is substantially coaxial with an axis of the photosensitive drum and a position in which the axis of the coupling member is not substantially coaxial with the axis of the photosensitive drum.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka
  • Patent number: 10386776
    Abstract: A connecting member includes a tube portion, a bottom portion provided at an end of the tube portion, an opening provided at the other end of the tube portion, a first limit portion extending from the bottom portion toward the opening in a way that a gap is left between the first limit portion and an internal periphery of the tube portion, and a second limit portion located inside the tube portion and spacedly facing the first limit portion. The first and second limit portions have first and second notches. The connecting member is used in a roller unit of an electronic image-forming apparatus. The connecting member is capable of being coupled with a rotational force receiving member in a way that the rotational force receiving member is freely swingable within an angle range relative to the connecting member without being detached from the connecting member.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: August 20, 2019
    Assignee: GENERAL PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Yi-Chia Wu
  • Patent number: 10203647
    Abstract: An end member (40) is disposed in an end portion of a columnar rotating body (20, 306), comprises: a bearing member (41); and a shaft member (70), in which the bearing member includes a main body (45) having a tubular body (46) and a holding portion (50) disposed on an inner side of the tubular body, and an intermediate member (60) held by the holding portion of the main body, in which one end side of the shaft member is held by the intermediate member, the intermediate member is snap-fit jointed to the holding portion of the main body to be rotatable around one axis, and the shaft member is snap-fit jointed to the intermediate member to be rotatable around an axis which is different from the axis of rotation of the intermediate member.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 12, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuichi Ikeda, Yohei Matsuoka
  • Patent number: 10175607
    Abstract: A removable developer container includes a convex portion to be inserted into a groove of an apparatus main body, a rotator to rotate around a rotational shaft, and a recess convex portion to be inserted into a groove of an apparatus main body, at a rear side of the convex portion. One end of the rotational shaft is inserted into the recess.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: January 8, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Patent number: 10048637
    Abstract: An image carrying member unit is provided with an image carrying member, and a unit housing. The image carrying member includes an image carrying member main body which has an outer peripheral surface on which a photosensitive layer is formed, a flange part which is secured to both ends of the image carrying member main body, a cylindrical oil-impregnated sintered bearing which is secured to the through-hole of the flange part, a conduction member which conducts electricity between the oil-impregnated sintered bearing and the image carrying member main body, a spindle which is slidably inserted in the oil-impregnated sintered bearing and secured to the unit housing, and a contact spring which has a coiled spring part into which the spindle is inserted, and which is sandwiched in a compressed state between an end surface in the axial direction of the oil-impregnated sintered bearing and the unit housing.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 14, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hiroki Morishita, Susumu Hanano
  • Patent number: 9772603
    Abstract: An image forming apparatus includes a main body including a first guide portion and a second guide portion, a process cartridge including a photosensitive drum, a support frame configured to support the process cartridge and move between an inside position and an outside position. The support frame includes a first side frame. The first side frame includes a first guided portion to be guided by the first guide portion. The second side frame includes a second guided portion guided by the second guide portion A dimension of the first side frame is greater than or equal to a dimension of the first side frame. A dimension of the second side frame is greater than or equal to a dimension of the second side frame.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: September 26, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shougo Sato
  • Patent number: 9772597
    Abstract: This image forming apparatus includes a photosensitive drum, a shaft portion, a support portion, and a bush member. The photosensitive drum is configured to hold a toner image to be transferred to a sheet member. The shaft portions are connected to both ends in an axial direction of the photosensitive drum, and project outward in the axial direction from a center of the photosensitive drum. The support portions have shaft holes through which the shaft portions are inserted, and are configured to rotatably support the shaft portions. The bush members are interposed between inner surfaces of the shaft holes and outer circumferential surfaces of the shaft portions, and are each formed in an arc shape having a slit extending in the axial direction.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 26, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Teruhiko Inada
  • Patent number: 9740164
    Abstract: An image forming apparatus includes a main body including a first guide portion and a second guide portion, a process cartridge including a photosensitive drum, a support frame configured to support the process cartridge and move between an inside position and an outside position. The support frame includes a first side frame. The first side frame includes a first guided portion to be guided by the first guide portion. The second side frame includes a second guided portion guided by the second guide portion A dimension of the first side frame is greater than or equal to a dimension of the first side frame. A dimension of the second side frame is greater than or equal to a dimension of the second side frame.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: August 22, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shougo Sato
  • Patent number: 9690248
    Abstract: There is provided a bearing member which is disposed at an end section of a photoreceptor drum for attaching a shaft member that transmits a rotating force to the bearing member, the bearing member including a tubular body, and a holding section which is disposed inside the tubular body attachably and detachably, and holds a rotating force transmission pin provided in the shaft member, wherein the holding section includes at least two swing grooves provided extending along an axial direction of the tubular body, and opposing each other, and introduction grooves, each having one end communicating with the swing groove and the other end communicating with an outside of the swing groove, and the introduction grooves in a posture in which the shaft member transmits the rotating force are disposed entirely at a position to be lower than an entirety or a part of the rotating force transmission pin.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 27, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shinichi Iijima, Shuichi Ikeda
  • Patent number: 9684261
    Abstract: A cartridge for use with a main assembly of an electrophotographic image forming apparatus, the cartridge being dismountable from the main assembly and including (i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis thereof; and (ii) a coupling member capable of taking a rotational force transmitting angular position for transmitting a rotational force for rotating the developing roller to the developing roller and a disengaging angular position in which the coupling member is inclined away from the rotational force transmitting angular position.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 20, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeo Miyabe, Takahito Ueno, Masanari Morioka
  • Patent number: 9684274
    Abstract: The invention relates to a transmission device for engagement with a photosensitive drum having a drum axis, comprising a shell detachably attached to the photosensitive drum coaxially to the drum axis; a sleeve coupled with the shell coaxially to the drum axis, such that the shell and the sleeve define at least one guiding groove therebetween; and a transmission unit comprising a shaft disposed to the sleeve coaxially to the drum axis, such that the shaft is rotatable about the drum axis relative to the sleeve and movable along the drum axis relative to the sleeve, wherein ranges of the rotation and motion of the shaft relative to the sleeve are subjected to the at least one guiding groove. Accordingly, the transmission device can be connected with and separated from the drive member smoothly.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 20, 2017
    Assignee: GENERAL PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Shih-Chieh Huang
  • Patent number: 9465357
    Abstract: A cartridge that is attached to or detached from a main body of an image forming apparatus. The cartridge includes a memory unit that includes a contact portion via which the cartridge is connected to the main body and is connected to the main body to transmit information of the cartridge to the main body. The contact portion is moved to a first position at which the contact portion is hidden inside the cartridge and a second position at which the contact portions is protruded out of the cartridge to be connected to a connection portion provided in the main body.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-won Moon, Ho-jin Jang, Woong-yong Choi, Oh-dug Kwon, Yun-kyu Sim, Jong-in Kim
  • Patent number: 9436149
    Abstract: An image forming apparatus includes a speed reduction device including a first gear and a second gear meshing each other. A ratio between teeth of the first gear and teeth of the second gear is an integer. One of the first gear and the second gear has a large diameter, and the other has a small diameter. The entire gear or the teeth of the gear having the large diameter is formed of a material having a higher modulus of longitudinal elasticity than a modulus of longitudinal elasticity of the gear having the small diameter.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: September 6, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Tanaka
  • Patent number: 9377743
    Abstract: A power transmitting device having a structure to allow a photoconductor to stably form a visible image on a printing medium. The power transmitting device interconnects a rotator and a drive motor, the drive motor generating drive power to drive the rotator. The power transmitting device includes at least one gear to be rotated upon receiving power from the drive motor, a rotating shaft having one end penetrating the gear and a coupler to interconnect the other end of the rotating shaft and the rotator. An outer diameter of the coupler, an outer diameter of the rotator and an outer diameter of the gear satisfy the following relation: 0.7D1<Dc<D2, where, D1: outer diameter of the rotator, D2: outer diameter of the gear and Dc: outer diameter of the coupler.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: June 28, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Bum Woo, Soo Yong Kim, Chang Yong Sung, Jae Il Yu
  • Patent number: 9377750
    Abstract: An object of the present invention is to increase the accuracy of positions of a drive gear and a driven gear without an increase in size of an apparatus. In an image forming apparatus, a driven gear 108 is provided on a free end side of a roller shaft 106 rather than at a portion 106a, of the roller shaft 106, supported by a fixation unit 50. A main assembly of the apparatus 1 has a support member 103 that is movable between a support position where, with the fixation unit 50 attached to the main assembly of the apparatus 1, a free end-side end of the roller shaft 106 is supported and a non-support position where, with the fixation unit 50 removed from the main assembly of the apparatus 1, the free end-side end of the roller shaft 106 is not supported.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: June 28, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ryosuke Takahashi
  • Patent number: 9285762
    Abstract: An end member is mounted on an end of a cylindrical rotary body. The end member includes a cylindrical-shaped body and a shaft connecting portion protruding from one end side of the body. The shaft connecting portion includes a penetration hole extending toward an axial line of the body, and no shaft connecting portion exists at a portion of the body disposed opposed to the penetration hole across the axial line of the body.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: March 15, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Takao Hasegawa
  • Patent number: 9285727
    Abstract: A sheet conveying apparatus includes a first pair of rotating members; a second pair of rotating members which is provided in a downstream side of the first pair of rotating members in a conveying direction of a sheet; and a load portion which applies a load on a rotation of the first pair of rotating members to generate a tensile stress in the sheet; wherein the load portion includes, a slidably moving member arranged on both sides in an axial direction of a rotary member, a fixing member arranged to nip the slidably moving member on both sides in the axial direction of the rotary member from both outer sides in the axial direction, the fixing member being arranged to be movable in the axial direction and being rotation regulated, and a force applying portion which applies force on the fixing member in the axial direction of the rotary member.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: March 15, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Takematsu, Kazuhisa Okuda, Kenjiro Sugaya
  • Patent number: 9207631
    Abstract: A developing cartridge may include a housing configured to hold toner. The cartridge may further include a developing roller including a developing roller shaft, a supply roller including a supply roller shaft, a developing electrode and a supply electrode. The developing electrode and supply electrode may be configured to guide an electrical contact of an image forming apparatus in one or more directions. In some examples, one or more of the developing electrode and supply electrode may have an angled surface that extends toward the other.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 8, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takeyuki Takagi, Hiroki Mori
  • Patent number: 9201389
    Abstract: A developing cartridge may include a housing configured to hold toner. The cartridge may further include a developing roller including a developing roller shaft, a supply roller including a supply roller shaft, a developing electrode and a supply electrode. The developing electrode and supply electrode may be configured to guide an electrical contact of an image forming apparatus in one or more directions. In some examples, the developing electrode and supply electrode may be arranged relative to an arrangement direction of fixing members used to fix the electrodes to the cartridge.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 1, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takeyuki Takagi, Hiroki Mori
  • Patent number: 9141069
    Abstract: A photosensitive drum unit is provided to which a coupling member is easily mounted. A drum flange is fixed to one end portion of a cylinder having a photosensitive layer at a peripheral surface. The coupling member is inserted into the drum flange. Finally, a closing member is mounted to the drum flange.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: September 22, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Kikuchi, Yoshiyuki Batori
  • Patent number: 9110427
    Abstract: An image forming apparatus includes a pair of side walls disposed opposite each other; a driven unit supported between the side walls; a drive unit with drive transmission gears attached to one of the side walls and drives the driven unit; and a reinforcing member connecting the pair of side walls. One end of the reinforcing member is attached to the side wall opposite the other side wall to which the drive unit is attached and the other end is attached to the drive unit. The driven unit is an image forming unit including at least an image carrier. The image carrier includes a rotary shaft, both lateral ends of which are supported by the pair of side walls. A gear portion engaging the drive transmission gears of the drive unit is disposed on one end of the rotary shaft of the image carrier.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: August 18, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Haruo Hashimoto, Kozo Yamazaki
  • Patent number: 9104166
    Abstract: In an image forming apparatus, when a photosensitive drum is mounted to the main body, the photosensitive drum is disposed below a positioning member and a transfer belt is disposed above the photosensitive drum. A first urging member urges downward an end of the photosensitive drum that is defined in an axial direction of the first photosensitive drum. A second urging member urges the photosensitive drum when the photosensitive drum is mounted to the main body. The second urging member urges the photosensitive drum upward against an urging force of the first urging member, thereby causing the photosensitive drum to make contact with the positioning member. The first urging member is disposed at a position between the positioning member and the second urging member in the axial direction of the photosensitive drum.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: August 11, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Hiroshi Igarashi
  • Patent number: 9069330
    Abstract: An image forming apparatus includes a main body, an image forming unit having a plurality of photosensitive drums arranged in an arrangement direction, and a changing member disposed outside the image forming unit in an axial direction of the plurality of photosensitive drums and configured to move in the arrangement direction and move at least a part of the image forming unit between a first position and a second position. The main body includes a metal frame made of a metal sheet and disposed on a same side in the axial direction that the changing member is disposed. The metal frame includes a support portion configured to support the image forming unit and a guide portion configured to guide movement of the changing member. The guide portion is integrally formed with the support portion.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: June 30, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Makoto Souda
  • Patent number: 9031459
    Abstract: An image forming device, including a cylindrical photoreceptor drum, an end member having a tubular body which is mounted at an end portion of the photoreceptor drum and which has an outer circumferential surface serving as a sliding surface, and a bearing configured to have a hole which defines an inner peripheral surface that corresponds to a sliding surface, the bearing supporting the tubular body of the end member by inserting the tubular body into the hole, wherein a difference between an outside diameter of a part provided with the sliding surface of the end member and a diameter of the hole of the bearing is equal to or more than 0.06 mm and equal to or less than 0.5 mm.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 12, 2015
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuichi Ikeda, Akira Ando
  • Patent number: 9031465
    Abstract: A transmission device for a photosensitive drum includes a sleeve, a transmission unit disposed in the sleeve and capable of moving and rotating at the same time, an elastic member, and a shell receiving the sleeve and the elastic member so that a relatively larger radius section and a relatively smaller radius section of the elastic member exert elastic force on the sleeve and the transmission unit, respectively. The transmission unit has two engagement blocks and a receiving space between them. Each engagement block has an inclined outer surface, an inner surface, an inclined top surface and an engagement concave connecting the inner and outer surfaces. The engagement concaves are opened toward opposite directions for engagement with two pillars of a drive member of an electronic image forming apparatus respectively. As a result, the transmission device can be connected with and separated from the drive member smoothly.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: May 12, 2015
    Assignee: GENERAL PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Shih-Chieh Huang
  • Patent number: 9031460
    Abstract: In an image forming apparatus, a drum supporting member integrally supports a plurality of photosensitive drums. A moving member detachably supports the drum support member. The moving member moves between a mounted position, in which the moving member is mounted in a main body of the image forming apparatus, and a pulled-out position, in which the moving member is pulled out of the main body of the image forming apparatus. A belt is disposed above the moving member and is capable of contacting with the plurality of photosensitive drums when the moving member is disposed in the mounted position. The drum supporting member is detached upward from the moving member when the moving member is in the pulled-out position. The drum supporting member rotatably supports each of the photosensitive drums.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 12, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Hiroshi Igarashi
  • Patent number: 9020394
    Abstract: An image forming apparatus includes a main body, a plurality of photosensitive drums, a process frame, and a process unit. The plurality of photosensitive drums includes a black photosensitive drum and color photosensitive drums. Black toner is used in the black photosensitive drum. Each of yellow, magenta, and cyan toner is used in one of the color photosensitive drums. The black and color photosensitive drums are arranged in a first direction. Each photosensitive drum has an axis extending in a direction perpendicular to the first direction. The process frame supports the color photosensitive drums in fixed positions and is detachably mounted on the main body. The process frame is inserted in a mounting direction to be mounted on the main body. The process unit is detachably mounted in the process frame and supports the black photosensitive drum.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: April 28, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Okabe, Junichi Hashimoto
  • Publication number: 20150110522
    Abstract: A bearing member is configured to be arranged in an end portion of a columnar rotary body, in which a shaft member is attached to the bearing member. The bearing member includes a body which includes a cylindrical body and a holding portion which is arranged inside the cylindrical body, and an intermediate member which is held by the holding portion of the body. The holding portion includes an intermediate member guide which guides the intermediate member so that the intermediate member rotates. The intermediate member includes a portion in which the shaft member is arranged.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 23, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuichi IKEDA, Shinichi Iijima
  • Patent number: 9008546
    Abstract: An image carrier includes a tubular image carrier body to carry an image on an outer circumferential surface thereof, a shaft disposed inside the image carrier body, a first flange mounted on the shaft, and a second flange spaced apart from the first flange in an axial direction of the image carrier and mounted on the shaft. Each of the first flange and the second flange includes a through-hole contacting the shaft, a first engagement portion to engage a lateral end of the image carrier body in the axial direction of the image carrier, and a second engagement portion, constituting at least a part of the through-hole, to engage the shaft. The second engagement portion is disposed inboard from the first engagement portion in the axial direction of the image carrier.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Taguchi, Satoshi Hatori, Naohiro Kumagai, Kaoru Yoshino, Hiromichi Ninomiya, Yuta Azeyanagi, Yasuhito Kuboshima, Hideyasu Seki, Ryohta Gotoh
  • Publication number: 20150093147
    Abstract: An image forming apparatus includes a main assembly, a developing cartridge, and a drum supporting frame detachably mountable to the main assembly while supporting the developing cartridge. The main assembly includes a door for opening and closing the main assembly, and a main assembly coupling engageable with a development coupling in interrelation with a closing operation of the door to transmit a driving force to the development coupling.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Ken Kikuchi
  • Publication number: 20150086238
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Patent number: 8989625
    Abstract: In an image forming apparatus, a drum supporting member integrally supports a plurality of photosensitive drums. A moving member detachably supports the drum support member. The moving member moves between a mounted position, in which the moving member is mounted in a main body of the image forming apparatus, and a pulled-out position, in which the moving member is pulled out of the main body of the image forming apparatus. A belt is disposed above the moving member and is capable of contacting with the plurality of photosensitive drums when the moving member is disposed in the mounted position. The drum supporting member is detached upward from the moving member when the moving member is in the pulled-out position. The drum supporting member rotatably supports each of the photosensitive drums.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 24, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Hiroshi Igarashi
  • Patent number: 8958719
    Abstract: When the acute angle between a normal line, oriented outward from a blade abutting portion of a photosensitive member over which a cleaning blade remains abutted before separation of the surface of the photosensitive member from the cleaning blade, and a horizontal plane, passing through the origin of the normal line, is expressed as a positive value when the normal line lies above the horizontal plane and expressed as a negative value when the normal line lies below the horizontal plane; an imaging unit frame so supports a photosensitive module that the photosensitive member can rotate to a specific rotational position having a greater angle than the angle at the time of separation of the surface of the photosensitive member from the cleaning blade. Until the photosensitive member rotates from a normal rotational position to the specific rotational position, the photosensitive module cannot be removed from the imaging unit frame.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: February 17, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Nobuo Kuwabara, Shinichi Kawahara, Akio Kosuge, Daisuke Tomita
  • Patent number: 8953979
    Abstract: An apparatus main body has an opening at a front side. A developing-section supporting member configured to hold developing sections and to be pulled in a pulling direction through the opening from an internal position inside the apparatus main body to an external position outside the apparatus main body at which the developing sections is configured to be mounted and dismounted. Exposing members emit light in an optical axis direction for forming a latent image on respective photosensitive members. The exposing members are provided at the developing-section supporting member. A displacement mechanism is configured to support the developing-section supporting member and to displace the developing-section supporting member between: an adjacent position at which the developing-section supporting member is adjacent to the photosensitive members; and a separated position at which the developing-section supporting member is separated from the photosensitive members.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 10, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hirotaka Mori, Hiroshi Nakano, Shougo Sato
  • Patent number: 8953981
    Abstract: A cartridge includes: a rotational body; a joint member having a first joint-side engagement part configured to be engaged to a rotational body-side engagement part with a predetermined moving range in a rotational direction, and a press member, wherein the joint member has a second joint-side engagement part configured to be engaged with a transfer-side engagement part with central axes of the joint member and the driving force transfer member being substantially matched, and wherein when the second joint-side engagement part is contacted to the driving force transfer member at a position at which the central axes of the joint member and the driving force transfer member are not matched, the joint member is rotated within the predetermined range and the second joint-side engagement part is thus moved, so that the second joint-side engagement part is engaged with the transfer-side-engagement part in the rotational direction.
    Type: Grant
    Filed: June 30, 2013
    Date of Patent: February 10, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Naoya Kamimura
  • Patent number: 8942603
    Abstract: A developing device includes a static latent image supporting member having a photosensitive layer and being arranged to be rotatable; a developer supporting member arranged to be rotatable for developing a static latent image formed on the static latent image supporting member using developer to form an image; a developer supplying member arranged to contact with the developer supporting member and be rotatable for supplying developer; and a drive transmission unit disposed on a side of same end portions of the developer supporting member and the developer supplying member for rotating the developer supporting member and the developer supplying member in a same rotational direction. The developer supplying member is formed so that an outer diameter thereof on a side of the drive transmission unit becomes smaller than an outer diameter thereof on an opposite side.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: January 27, 2015
    Assignee: Oki Data Corporation
    Inventor: Toshiharu Sato
  • Patent number: 8942592
    Abstract: A process cartridge usable with an electrophotographic image forming apparatus, a main assembly of which is not provided with a mechanism for moving a main assembly side engaging portion provided in the main assembly to transmit a rotational force to an image bearing member in the direction of the rotational axis of the image bearing member by an opening and closing operation of a cover member for the main assembly. The process cartridge can be mounted to the main assembly in a direction substantially perpendicular to the rotational axis of the image bearing member without deterioration of the usability performance. With the process cartridge, the electrophotographic image forming apparatus can be downsized.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: January 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunsuke Uratani, Noriyuki Komatsu, Toru Oguma
  • Patent number: 8938186
    Abstract: A method for aligning a photoconductor cartridge (200) in an electrophotographic device includes providing at least two holes in a first end of the cartridge. At least two pins (251) are provided in a frame of the electrophotographic device which mate with the holes in the first end of the cartridge when the cartridge is inserted in the electrophotographic device. A drive mechanism contacts a spherical bearing of a photoconductor of the cartridge and drives a pair of drive dogs. One drive dog is affixed to a spline on the drive mechanism and a second drive dog is affixed to the spherical bearing. At least one hole is provided in a second end of the cartridge. At least one pin is provided in a frame of the electrophotographic device which mate with the hole in the second end of the cartridge when the cartridge is inserted in the electrophotographic device.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: January 20, 2015
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey A. Pitas, Richard G. Luther, Matthias H. Regelsberger
  • Patent number: 8909098
    Abstract: In a developing device, a developing roller has: a first rotational shaft extending in a first direction; and a first roller body covering the first rotational shaft and configured to carry developer. A supply roller has: a second rotational shaft extending in the first direction; and a second roller body covering the second rotational shaft and configured to supply the developer to the developing roller. A housing accommodates the developing roller, the supply roller, and the developer. The housing includes a first wall and a second wall opposed with each other in the first direction. The first wall is formed with a first cutout. The second wall being formed with a second cutout. The first rotational shaft and the second rotational shaft are positioned in both the first cutout and the second cutout when projected in the first direction.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: December 9, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Nao Itabashi
  • Publication number: 20140348540
    Abstract: An image forming apparatus includes a drum cartridge supporting member for supporting a plurality of drum cartridges each including a photosensitive drum, wherein the drum cartridge supporting member is movable, with respect to an axial direction of the photosensitive drum, between a first position inside a main assembly of the image forming apparatus and a second position, outside the main assembly, in which the drum cartridges are mountable and dismountable; a guide portion for guiding a plurality of developing cartridges each including a developing roller for developing an electrostatic latent image formed on the photosensitive drum, wherein the guide portion individually guides the developing cartridges mountably to and demountably from the main assembly in an axial direction of the developing roller; and a moving mechanism for moving the developing cartridge mounted in the main assembly between a developing position in which the electrostatic latent image is to be developed and a retracted position in wh
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Inventor: Kenji MATSUDA
  • Patent number: 8886087
    Abstract: The invention relates to a photosensitive drum driving head, which comprises drum flange, drum shaft and boss, wherein the drum flange is disposed on the end portion of a photosensitive drum and connected with the photosensitive drum; the drum shaft is axially extended from the end portion of the drum flange; the boss is axially extended from the end face of the drum shaft and engaged with a recess in a driving head of image forming apparatus; three vertical convex teeth radially extended along the boss and engaged with power transmission portions are formed on side wall of the boss, perpendicular to the drum shaft, extended along an axial line of the photosensitive drum, and provided with mating surfaces formed by longitudinal cutting angles on end faces of the vertical convex teeth; at least one mating surface is engaged with an edge of a twisted bevel of the recess.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: November 11, 2014
    Assignee: Zhuhai Seine Technology Co., Ltd.
    Inventors: Junzhong Wu, Qingfei Peng, Jianxin Cao, Jinlian Liu
  • Patent number: 8886084
    Abstract: A pressing member applies a pressing force to a trailing end in a direction which intersects a predetermined reference direction, allowing the pressing force to have both a first component in the predetermined reference direction and a second component perpendicular to the predetermined reference direction. A trailing end is pressed in the predetermined reference direction by the first component. In the mounted state, the leading end is in contact with the reference member at two contact surfaces including a first contact surface and a second contact surface. The first contact surface defines a first positioning direction being perpendicular to the first contact surface and intersecting the predetermined reference direction.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: November 11, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Okabe, Yoshiya Tomatsu
  • Patent number: 8879955
    Abstract: A drum unit has a photosensitive drum, a circular tube member, a housing, and a bearing portion. The photosensitive drum includes a drum sleeve, a flange portion, and a supporting portion. The supporting portion is press-fitted into the inner peripheral surface of the circular tube member made of metal. The sliding surface of the circular tube member is rotatably inserted into the bearing portion attached to the housing of the drum unit.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: November 4, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Kei Wakayama
  • Publication number: 20140314440
    Abstract: An image forming apparatus includes a pair of side walls disposed opposite each other; a driven unit supported between the side walls; a drive unit with drive transmission gears attached to one of the side walls and drives the driven unit; and a reinforcing member connecting the pair of side walls. One end of the reinforcing member is attached to the side wall opposite the other side wall to which the drive unit is attached and the other end is attached to the drive unit. The driven unit is an image forming unit including at least an image carrier. The image carrier includes a rotary shaft, both lateral ends of which are supported by the pair of side walls. A gear portion engaging the drive transmission gears of the drive unit is disposed on one end of the rotary shaft of the image carrier.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Haruo HASHIMOTO, Kozo YAMAZAKI