Patents by Inventor Yu Fukasawa
Yu Fukasawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240118657Abstract: A cartridge includes a casing, a photosensitive drum, and a coupling operatively connected to the photosensitive drum. The coupling includes a guiding portion, an engaging portion, and a visor portion. The visor portion projects outwardly in a direction perpendicular to the axis of the coupling. The visor portion covers a space downstream of the engaging portion in the rotational direction of the coupling or the visor portion is positioned upstream of the guiding portion in the rotational direction of the coupling and adjacent to the guiding portion.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Inventors: Masanari Morioka, Takeo Kawanami, Yu Fukasawa
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Publication number: 20240077812Abstract: A developing device includes a developing member to carry developer stored by a developing frame, and a regulating blade having a support plate fixed to the developing frame, a plate-like member, and a regulating member. One end portion of the plate-like member is opposed to the developing member, and the other end portion is welded to the support plate. The regulating member is fixed to a plate-like member surface, and contacts the developing member to regulate a developer thickness on a developing surface. The regulating member is provided with a recessed portion recessed at a regulating member end portion. The regulating member end portion is lower than a regulating member central portion. A plate-like member region welded to the support plate is located at the plate-like member other end portion and overlaps the regulating member central portion and the regulating member end portion at which the recessed portion is provided.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: Yu Fukasawa, Takuya Kawakami, Yuji Kawaguchi
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Publication number: 20240061373Abstract: Disclosed is a cartridge attachable to an image forming apparatus body, the cartridge including: a memory member storing information relating to the cartridge; and a supporting body having a memory mounting portion on which the memory member is mounted, the memory member having a first surface, a second surface, and a lateral surface, the first surface is provided with a contact portion connected to a body electrode portion of the body of the image forming apparatus when the cartridge is installed in the body of the image forming apparatus, the memory mounting portion has a first opposing portion opposing the second surface and a second opposing portion opposing the lateral surface when the memory member is mounted, the memory member is mounted by adhesive between the second surface and the first opposing portion and between the lateral surface and the second opposing portion.Type: ApplicationFiled: October 31, 2023Publication date: February 22, 2024Inventors: YU FUKASAWA, YUKIO KUBO, YOSUKE KASHIIDE
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Patent number: 11906927Abstract: [TASK] To further develop prior art technique. [SOLUTION] A cartridge includes a photosensitive drum and a coupling. the coupling includes a main body and a movable member movable relative to the main body. The movable member includes an engaging portion which is capable of entering between a driving force application member and a braking force application member by the movement relative to the main body. The movable member receives a driving force for rotating the photosensitive drum, from the driving force application member and also receives a braking force applying a load against rotation of the photosensitive drum, from the braking force application member.Type: GrantFiled: November 16, 2022Date of Patent: February 20, 2024Assignee: Canon Kabushiki KaishaInventors: Toshiki Fujino, Akinobu Hirayama, Teruhiko Sasaki, Tachio Kawai, Daisuke Abe, Masanari Morioka, Takeo Kawanami, Yu Fukasawa
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Publication number: 20230418182Abstract: An image forming apparatus includes a main body having a first metal terminal, a plurality of toner cartridges to store toner and including a housing storing the toner, a supporting member provided at one end, and a memory medium including a chip for recording information about the toner cartridge and an electrical contact and being supported by the supporting member, and a tray movable between a housed position and a drawn-out position. The tray includes a frame which can mount the plurality of toner cartridges, a plurality of tray-side electrical contacts provided at the frame and able to contact the electrical contact of the memory medium of the plurality of toner cartridges respectively, and a second metal terminal electrically connected to the plurality of tray-side electrical contacts and able to contact the first metal terminal.Type: ApplicationFiled: September 8, 2023Publication date: December 28, 2023Inventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
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Publication number: 20230408951Abstract: A developer accommodating device includes a frame extending in a longitudinal direction thereof and an opening portion provided on the frame. The frame includes a guide portion to mount the developer accommodating device on a developing unit along a mounting direction crossing the longitudinal direction, a first portion including first and second chambers arranged in parallel in a first direction crossing the longitudinal direction, and a second portion communicating with the first and second chambers with respect to the longitudinal direction and a volume thereof is larger than that of the first portion. The first chamber, in which the opening portion is formed, does not directly communicate with the second chamber with respect to the first direction but communicates with the second chamber via the second portion. As seen in the longitudinal direction, a cross sectional area of the second chamber is equal to or larger than that of the first chamber.Type: ApplicationFiled: September 1, 2023Publication date: December 21, 2023Inventors: Naoya Asanuma, Daisuke Abe, Yu Fukasawa, Kazutaka Sueshige
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Patent number: 11841675Abstract: Disclosed is a cartridge attachable to an image forming apparatus body, the cartridge including: a memory member storing information relating to the cartridge; and a supporting body having a memory mounting portion on which the memory member is mounted, the memory member having a first surface, a second surface, and a lateral surface, the first surface is provided with a contact portion connected to a body electrode portion of the body of the image forming apparatus when the cartridge is installed in the body of the image forming apparatus, the memory mounting portion has a first opposing portion opposing the second surface and a second opposing portion opposing the lateral surface when the memory member is mounted, the memory member is mounted by adhesive between the second surface and the first opposing portion and between the lateral surface and the second opposing portion.Type: GrantFiled: January 10, 2023Date of Patent: December 12, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yu Fukasawa, Yukio Kubo, Yosuke Kashiide
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Patent number: 11841636Abstract: A developing device includes a developing member to carry developer stored by a developing frame, and a regulating blade having a support plate fixed to the developing frame, a plate-like member, and a regulating member. One end portion of the plate-like member is opposed to the developing member, and the other end portion is welded to the support plate. The regulating member is fixed to a plate-like member surface, and contacts the developing member to regulate a developer thickness on a developing surface. The regulating member is provided with a recessed portion recessed at a regulating member end portion. The regulating member end portion is lower than a regulating member central portion. A plate-like member region welded to the support plate is located at the plate-like member other end portion and overlaps the regulating member central portion and the regulating member end portion at which the recessed portion is provided.Type: GrantFiled: February 3, 2022Date of Patent: December 12, 2023Assignee: Canon Kabushiki KaishaInventors: Yu Fukasawa, Takuya Kawakami, Yuji Kawaguchi
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Patent number: 11835907Abstract: A drum unit usable with a process cartridge includes a photosensitive drum having an axis L1; and a coupling member having an axis L2 and connected to an end portion of the photosensitive drum, the coupling member being provided with a projection extending toward an end portion of the coupling member, wherein the coupling member is movable along the axis L2 between a first position, and a second position in which the projection is closer to the photosensitive drum than in the first position, wherein the projection is provided with a force receiving portion for receiving a rotational force and an outer surface facing away from the axis L2, and wherein at least a part of the outer surface is more distant from the axis L2 as is further from the photosensitive drum in a direction of the axis L1.Type: GrantFiled: April 11, 2022Date of Patent: December 5, 2023Assignee: Canon Kabushiki KaishaInventors: Shigemi Kamoshida, Yu Fukasawa
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Patent number: 11822277Abstract: An image forming apparatus includes a tray which is movable between a housed position at which the tray is housed in a housing portion of a body and a drawn-out position, a first cartridge detachably attached to the tray and including a first developing roller, and a second cartridge detachably attached to the tray and including a second developing roller. In a contacting state where (i) the first cartridge and the second cartridge are attached to the tray, (ii) the tray is in the housed position, (iii) the first developing roller contacts a first photosensitive drum, and (iv) the second developing roller contacts a second photosensitive drum, a position of a first projection of the first cartridge and a position of a first holder to which a first memory is fixed at least partially overlap each other with respect to the vertical direction.Type: GrantFiled: February 21, 2023Date of Patent: November 21, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yukio Kubo, Yu Fukasawa, Daisuke Abe
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Patent number: 11789378Abstract: An image forming apparatus includes: a main body; a developing cartridge having a housing, a memory medium, a memory medium unit, a developer carrier, and a protrusion portion in the longitudinal direction of the developer carrier; and a tray having a frame, an image bearing member, a guide member provided at one end in the longitudinal direction, an electric contact portion with the memory medium, and a memory unit support portion. The guide member includes a portion which functions as a memory unit support portion, and a downstream portion located downstream of the memory unit support portion in the mounting direction of the developing cartridge. The memory unit support portion guides the protrusion portion to the downstream portion when the developing cartridge is mounted on the frame.Type: GrantFiled: November 19, 2021Date of Patent: October 17, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
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Patent number: 11782360Abstract: A developer accommodating device includes a frame extending in a longitudinal direction and an opening portion provided on the frame. The frame includes a guide portion to mount the developer accommodating device on a developing unit along a mounting direction crossing the longitudinal direction, a first portion including first and second chambers arranged in parallel in a first direction crossing the longitudinal direction, and a second portion communicating with the first and second chambers with respect to the longitudinal direction and having a volume larger than that of the first portion. The first chamber, in which the opening portion is formed, does not directly communicate with the second chamber with respect to the first direction but communicates with the second chamber via the second portion. As seen in the longitudinal direction, a cross sectional area of the second chamber is equal to or larger than that of the first chamber.Type: GrantFiled: May 11, 2022Date of Patent: October 10, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Naoya Asanuma, Daisuke Abe, Yu Fukasawa, Kazutaka Sueshige
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Patent number: 11774876Abstract: A seal member includes a seal surface that comes into contact with and slides with an end portion of an outer circumferential surface of a developing roller. The seal surface includes a first seal region configured of a plurality of first fiber bundles including a first fiber having a charge property that repels a developer, and a second seal region configured of a plurality of second fiber bundles including a second fiber having a charge property that attracts the developer, both extending in an inclined direction such that a portion thereof closer to an opening portion of a frame body of a developing unit is located further downstream in a rotating direction of the developing roller, and being alternately disposed in the rotating direction, and a proportion of a portion occupied by the second fiber bundles on the seal surface is at least 5% and not more than 60%.Type: GrantFiled: August 18, 2022Date of Patent: October 3, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yu Fukasawa, Seiya Ishikawa, Masanari Morioka
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Publication number: 20230205124Abstract: An image forming apparatus includes a tray which is movable between a housed position at which the tray is housed in a housing portion of a body and a drawn-out position, a first cartridge detachably attached to the tray and including a first developing roller, and a second cartridge detachably attached to the tray and including a second developing roller. In a contacting state where (i) the first cartridge and the second cartridge are attached to the tray, (ii) the tray is in the housed position, (iii) the first developing roller contacts a first photosensitive drum, and (iv) the second developing roller contacts a second photosensitive drum, a position of a first projection of the first cartridge and a position of a first holder to which a first memory is fixed at least partially overlap each other with respect to the vertical direction.Type: ApplicationFiled: February 21, 2023Publication date: June 29, 2023Inventors: Yukio Kubo, Yu Fukasawa, Daisuke Abe
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Publication number: 20230205128Abstract: [Task] To further develop conventional technique.Type: ApplicationFiled: March 6, 2023Publication date: June 29, 2023Inventors: SOHTA SUGIMOTO, SHUNSUKE HIJIKATA, NAOKI HAYASHI, YU FUKASAWA, SEIYA ISHIKAWA, SHINICHI NISHIDA, SHINJIRO TOBA, TAKEO KAWANAMI, YUICHI FUKUI, YASUYUKI EGAMI
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Publication number: 20230176519Abstract: [SOLUTION] A cartridge includes a photosensitive drum and a coupling. the coupling includes a main body and a movable member movable relative to the main body. The movable member includes an engaging portion which is capable of entering between a driving force application member and a braking force application member by the movement relative to the main body. The movable member receives a driving force for rotating the photosensitive drum, from the driving force application member and also receives a braking force applying a load against rotation of the photosensitive drum, from the braking force application member.Type: ApplicationFiled: November 16, 2022Publication date: June 8, 2023Inventors: Toshiki Fujino, Akinobu Hirayama, Teruhiko Sasaki, Tachio Kawai, Daisuke Abe, Masanari Morioka, Takeo Kawanami, Yu Fukasawa
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Publication number: 20230168625Abstract: Disclosed is a cartridge attachable to an image forming apparatus body, the cartridge including: a memory member storing information relating to the cartridge; and a supporting body having a memory mounting portion on which the memory member is mounted, the memory member having a first surface, a second surface, and a lateral surface, the first surface is provided with a contact portion connected to a body electrode portion of the body of the image forming apparatus when the cartridge is installed in the body of the image forming apparatus, the memory mounting portion has a first opposing portion opposing the second surface and a second opposing portion opposing the lateral surface when the memory member is mounted, the memory member is mounted by adhesive between the second surface and the first opposing portion and between the lateral surface and the second opposing portion.Type: ApplicationFiled: January 10, 2023Publication date: June 1, 2023Inventors: Yu FUKASAWA, Yukio KUBO, Yosuke KASHIIDE
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Patent number: 11609524Abstract: An image forming apparatus of the present invention includes: a body; a developing cartridge having a memory medium and a developer bearing member; a tray including a frame which is movable between a housed position and a drawn-out position and has side portions extending in the moving direction and to which the developing cartridge is attachable, an image bearing member that faces the developer bearing member when the developing cartridge is attached, a tray-side metal terminal provided on the side portion and electrically connected to the memory medium when the cartridge is attached, and a tray guide portion extending along the moving direction; a body-side metal terminal that faces the tray-side metal terminal when the tray is housed, wherein the tray-side metal terminal is provided below the tray guide portion.Type: GrantFiled: November 17, 2021Date of Patent: March 21, 2023Assignee: Canon Kabushiki KaishaInventors: Yukio Kubo, Yu Fukasawa, Daisuke Abe
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Publication number: 20230074264Abstract: [TASK] To further develop prior art technique. [SOLUTION] A cartridge includes a photosensitive drum and a coupling. the coupling includes a main body and a movable member movable relative to the main body. The movable member includes an engaging portion which is capable of entering between a driving force application member and a braking force application member by the movement relative to the main body. The movable member receives a driving force for rotating the photosensitive drum, from the driving force application member and also receives a braking force applying a load against rotation of the photosensitive drum, from the braking force application member.Type: ApplicationFiled: November 16, 2022Publication date: March 9, 2023Inventors: Toshiki Fujino, Akinobu Hirayama, Teruhiko Sasaki, Tachio Kawai, Daisuke Abe, Masanari Morioka, Takeo Kawanami, Yu Fukasawa
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Publication number: 20230075423Abstract: A cartridge includes a photosensitive drum and a casing rotatably supporting the photosensitive drum. A coupling is operatively connected to the photosensitive drum so as to be capable of transmitting a driving force toward the photosensitive drum. The coupling includes a main body, a movable portion movable relative to the main body of the coupling between a first position and a second position, and a projection configured to move in a circumferential direction of the coupling relative to the main body of the coupling in response to movement of the movable portion from the first position to the second position.Type: ApplicationFiled: November 15, 2022Publication date: March 9, 2023Inventors: Toshiki Fujino, Akinobu Hirayama, Teruhiko Sasaki, Tachio Kawai, Daisuke Abe, Masanari Morioka, Takeo Kawanami, Yu Fukasawa