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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10642206B2
Image forming apparatus
Publication/Patent Number: US10642206B2 Publication Date: 2020-05-05 Application Number: 16/209,736 Filing Date: 2018-12-04 Inventor: Shinohara, Seiichi   Shida, Kazuhisa   Assignee: Canon Kabushiki Kaisha   IPC: G03G15/00 Abstract: An image forming apparatus includes a rotatable photosensitive member including a photosensitive layer and a light transmitting surface layer provided outside the photosensitive layer; an exposing unit configured to expose the surface of the photosensitive member to a laser beam which deflects in a main scan direction substantially perpendicular to a moving direction of the surface of the photosensitive member, so that a latent image formed on the surface of the photosensitive member in the main scan direction; and a controller configured to control a pulse width of an image signal for switching, on the basis of image data, between projection and non-projection of the beam from the exposing unit. The controller controls the pulse width such that it is smaller than when the thickness of the surface layer is larger. An image forming apparatus includes a rotatable photosensitive member including a photosensitive layer and a light transmitting surface layer provided outside the photosensitive layer; an exposing unit configured to expose the surface of the photosensitive member to a laser beam ...More ...Less
2 US2019179245A1
IMAGE FORMING APPARATUS
Publication/Patent Number: US2019179245A1 Publication Date: 2019-06-13 Application Number: 16/209,736 Filing Date: 2018-12-04 Inventor: Shinohara, Seiichi   Shida, Kazuhisa   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G15/00 Abstract: An image forming apparatus includes a rotatable photosensitive member including a photosensitive layer and a light transmitting surface layer provided outside the photosensitive layer; an exposing unit configured to expose the surface of the photosensitive member to a laser beam which deflects in a main scan direction substantially perpendicular to a moving direction of the surface of the photosensitive member, so that a latent image formed on the surface of the photosensitive member in the main scan direction; and a controller configured to control a pulse width of an image signal for switching, on the basis of image data, between projection and non-projection of the beam from the exposing unit. The controller controls the pulse width such that it is smaller than when the thickness of the surface layer is larger. An image forming apparatus includes a rotatable photosensitive member including a photosensitive layer and a light transmitting surface layer provided outside the photosensitive layer; an exposing unit configured to expose the surface of the photosensitive member to a laser beam ...More ...Less
3 EP2633369B1
ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER
Publication/Patent Number: EP2633369B1 Publication Date: 2019-08-14 Application Number: 11836481.9 Filing Date: 2011-10-25 Inventor: Shida, Kazuhisa   Okuda, Atsushi   Noguchi, Kazunori   Anezaki, Takashi   Ogaki, Harunobu   Murai, Shio   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/05
4 US9933726B2
Developer container, cartridge and image forming apparatus
Publication/Patent Number: US9933726B2 Publication Date: 2018-04-03 Application Number: 15/456,992 Filing Date: 2017-03-13 Inventor: Isobe, Yuta   Shida, Kazuhisa   Kanazawa, Takayuki   Mizukoshi, Shunsuke   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G15/08 Abstract: A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the container at a central opposing portion positioned in a central side and at an end opposing portion positioned at an end side with respect to a longitudinal direction of the unsealing member. The sealing member and the container are bonded to each other at bonding portion which is at least a part of the central opposing portion. The bonding force at the bonding portion of the central opposing portion is larger than a bonding force between the sealing member and the container at the end opposing portion. A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the ...More ...Less
5 US9996032B2
Developer container, development apparatus, process cartridge, and image forming apparatus
Publication/Patent Number: US9996032B2 Publication Date: 2018-06-12 Application Number: 15/476,633 Filing Date: 2017-03-31 Inventor: Tokudome, Makoto   Isobe, Yuta   Kanazawa, Takayuki   Shida, Kazuhisa   Mizukoshi, Shunsuke   Assignee: Canon Kabushiki Kaisha   IPC: G03G21/18 Abstract: The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is conveyed, wherein, when the developer container is new, a first developer amount which is an amount of the developer contained at an upstream side that is upstream of the partitioning portion in the conveying direction, is larger than a second developer amount which is an amount of the developer contained at a downstream side that is downstream of the partitioning portion in the conveying direction. The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is ...More ...Less
6 US10073362B2
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
Publication/Patent Number: US10073362B2 Publication Date: 2018-09-11 Application Number: 14/095,955 Filing Date: 2013-12-03 Inventor: Fujii, Atsushi   Tsuji, Haruyuki   Matsuoka, Hideaki   Shida, Kazuhisa   Nakamura, Nobuhiro   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G5/14 Abstract: An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten. An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and ...More ...Less
7 EP2867729B1
METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER
Publication/Patent Number: EP2867729B1 Publication Date: 2018-05-30 Application Number: 13808668.1 Filing Date: 2013-06-17 Inventor: Fujii, Atsushi   Matsuoka, Hideaki   Tsuji, Haruyuki   Nakamura, Nobuhiro   Shida, Kazuhisa   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/14
8 EP3023840B8
ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
Publication/Patent Number: EP3023840B8 Publication Date: 2018-03-21 Application Number: 15003356.1 Filing Date: 2010-09-03 Inventor: Fujii, Atsushi   Tsuji, Haruyuki   Matsuoka, Hideaki   Shida, Kazuhisa   Nakamura, Nobuhiro   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/08 Abstract: An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten. An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and ...More ...Less
9 EP3023840B1
ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
Publication/Patent Number: EP3023840B1 Publication Date: 2018-02-14 Application Number: 15003356.1 Filing Date: 2010-09-03 Inventor: Fujii, Atsushi   Tsuji, Haruyuki   Matsuoka, Hideaki   Shida, Kazuhisa   Nakamura, Nobuhiro   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/08 Abstract: An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten. An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and ...More ...Less
10 US10025265B2
Developer container, developing device, process cartridge, and image forming apparatus
Publication/Patent Number: US10025265B2 Publication Date: 2018-07-17 Application Number: 15/480,134 Filing Date: 2017-04-05 Inventor: Tokudome, Makoto   Kanazawa, Takayuki   Isobe, Yuta   Mizukoshi, Shunsuke   Shida, Kazuhisa   Assignee: Canon Kabushiki Kaisha   IPC: G03G21/16 Abstract: A configuration in which an opening is covered with a plurality of partition members is provided, and timings of causing the partition members to move are differentiated, so that torque is reduced.
11 US10001726B2
Developer container, developing device, process cartridge, and image forming apparatus
Publication/Patent Number: US10001726B2 Publication Date: 2018-06-19 Application Number: 15/415,010 Filing Date: 2017-01-25 Inventor: Oshima, Nobuo   Mizukoshi, Shunsuke   Isobe, Yuta   Shida, Kazuhisa   Kanazawa, Takayuki   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G15/08 Abstract: Provided is a developer container, including: a frame body having an opening; a sealing member configured to seal the opening; an unsealing member configured to unseal the opening by moving the sealing member and accommodated inside the frame body; and a part of the sealing member peelably bonded to an outer peripheral edge of the opening on an opposite side of the unsealing member with respect to the opening. Provided is a developer container, including: a frame body having an opening; a sealing member configured to seal the opening; an unsealing member configured to unseal the opening by moving the sealing member and accommodated inside the frame body; and a part of the sealing ...More ...Less
12 US9864284B2
Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
Publication/Patent Number: US9864284B2 Publication Date: 2018-01-09 Application Number: 15/054,009 Filing Date: 2016-02-25 Inventor: Kawahara, Masataka   Tanaka, Masato   Miura, Daisuke   Anezaki, Takashi   Maruyama, Akihiro   Sugiyama, Kazumichi   Tomono, Hiroyuki   Shida, Kazuhisa   Ito, Yota   Yamaai, Tatsuya   Uesugi, Hirotoshi   Hinata, Shoma   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/047 Abstract: An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic photosensitive member and contains a polycarbonate resin having a structural unit selected from group A and a structural unit selected from group B. An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic ...More ...Less
13 US9618861B2
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
Publication/Patent Number: US9618861B2 Publication Date: 2017-04-11 Application Number: 14/630,034 Filing Date: 2015-02-24 Inventor: Fujii, Atsushi   Shida, Kazuhisa   Anezaki, Takashi   Tsuji, Haruyuki   Assignee: Canon Kabushiki Kaisha   IPC: G03G5/14 Abstract: A conductive layer contains a binder material, a first particle, and a second particle. The first particle is composed of a core particle and aluminum-doped zinc oxide covering the core particle or is composed of a core particle and oxygen-deficient zinc oxide covering the core particle. The second particle is of the same material as that of the core particle of the first particle. The content of the first particle is 20% by volume or more and 50% by volume or less of the total volume of the conductive layer. The content of the second particle is 0.1% by volume or more and 15% by volume or less of the total volume of the conductive layer and is 0.5% by volume or more and 30% by volume or less of the volume of the first particle. A conductive layer contains a binder material, a first particle, and a second particle. The first particle is composed of a core particle and aluminum-doped zinc oxide covering the core particle or is composed of a core particle and oxygen-deficient zinc oxide covering the core ...More ...Less
14 US2017261886A1
DEVELOPER CONTAINER, CARTRIDGE AND IMAGE FORMING APPARATUS
Publication/Patent Number: US2017261886A1 Publication Date: 2017-09-14 Application Number: 15/456,992 Filing Date: 2017-03-13 Inventor: Isobe, Yuta   Shida, Kazuhisa   Kanazawa, Takayuki   Mizukoshi, Shunsuke   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G15/08 Abstract: A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the container at a central opposing portion positioned in a central side and at an end opposing portion positioned at an end side with respect to a longitudinal direction of the unsealing member. The sealing member and the container are bonded to each other at bonding portion which is at least a part of the central opposing portion. The bonding force at the bonding portion of the central opposing portion is larger than a bonding force between the sealing member and the container at the end opposing portion. A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the ...More ...Less
15 JP2017167178A
DEVELOPER CONTAINER
Publication/Patent Number: JP2017167178A Publication Date: 2017-09-21 Application Number: 2016049193 Filing Date: 2016-03-14 Inventor: Kanazawa, Takayuki   Shida, Kazuhisa   Isobe, Yuta   Mizukoshi, Shunsuke   Assignee: CANON INC   IPC: G03G15/08 Abstract: PROBLEM TO BE SOLVED: To prevent a partition member from being peeled off when a developer container is not used and minimize a burden in opening the partition member.SOLUTION: A developer container comprises: a container that stores a developer and includes an opening; a partition member that covers the opening when the developer container is not used and partitions the developer stored in the container; and an opening member that opens the opening by moving the partition member. The partition member has at least part of a center-side opposing part coupled to the container PROBLEM TO BE SOLVED: To prevent a partition member from being peeled off when a developer container is not used and minimize a burden in opening the partition member.SOLUTION: A developer container comprises: a container that stores a developer and includes an opening; a ...More ...Less
16 JP2017044833A
DEVELOPER CONTAINER
Publication/Patent Number: JP2017044833A Publication Date: 2017-03-02 Application Number: 2015166419 Filing Date: 2015-08-26 Inventor: Kanazawa, Takayuki   Okubo, Kazuhiro   Shida, Kazuhisa   Kanai, Ryosuke   Assignee: CANON INC   IPC: G03G15/08 Abstract: PROBLEM TO BE SOLVED: To provide a developer container that can reduce a load on torque when a rotation shaft opens a sealing member.SOLUTION: A developer container comprises: a storage part that includes an opening and is to store a developer; a sealing member that openably seals the opening; and an opening member that moves the sealing member to open the opening. The opening member includes a rotation shaft and rotates to move the sealing member; the opening member is provided at a position where the axis of the rotation shaft intersects with a virtual surface including the opening.SELECTED DRAWING: Figure 3 PROBLEM TO BE SOLVED: To provide a developer container that can reduce a load on torque when a rotation shaft opens a sealing member.SOLUTION: A developer container comprises: a storage part that includes an opening and is to store a developer; a sealing member that openably ...More ...Less
17 US2017293243A1
DEVELOPER CONTAINER, DEVELOPMENT APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Publication/Patent Number: US2017293243A1 Publication Date: 2017-10-12 Application Number: 15/476,633 Filing Date: 2017-03-31 Inventor: Mizukoshi, Shunsuke   Shida, Kazuhisa   Kanazawa, Takayuki   Isobe, Yuta   Tokudome, Makoto   Assignee: CANON KABUSHIKI KAISHA   IPC: G03G15/08 Abstract: The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is conveyed, wherein, when the developer container is new, a first developer amount which is an amount of the developer contained at an upstream side that is upstream of the partitioning portion in the conveying direction, is larger than a second developer amount which is an amount of the developer contained at a downstream side that is downstream of the partitioning portion in the conveying direction. The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is ...More ...Less