Patents by Inventor Masaki Ojima
Masaki Ojima 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).
-
Publication number: 20240061371Abstract: 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: ApplicationFiled: November 2, 2023Publication date: February 22, 2024Inventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Patent number: 11846910Abstract: 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: December 28, 2022Date of Patent: December 19, 2023Assignee: Canon Kabushiki KaishaInventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Publication number: 20230350339Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adj acent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.Type: ApplicationFiled: July 6, 2023Publication date: November 2, 2023Inventors: Noriyuki Komatsu, Masaki Ojima, Daisuke Abe, Tomonori Mori, Tadayuki Tsuda, Tetsuya Numata, Naoya Asanuma
-
Patent number: 11733644Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.Type: GrantFiled: November 19, 2021Date of Patent: August 22, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Noriyuki Komatsu, Masaki Ojima, Daisuke Abe, Tomonori Mori, Tadayuki Tsuda, Tetsuya Numata, Naoya Asanuma
-
Publication number: 20230135180Abstract: 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: ApplicationFiled: December 28, 2022Publication date: May 4, 2023Inventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Patent number: 11567447Abstract: 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: April 11, 2022Date of Patent: January 31, 2023Assignee: Canon Kabushiki KaishaInventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Publication number: 20220236690Abstract: 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: ApplicationFiled: April 11, 2022Publication date: July 28, 2022Inventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
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
-
Publication number: 20220075313Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.Type: ApplicationFiled: November 19, 2021Publication date: March 10, 2022Inventors: Noriyuki Komatsu, Masaki Ojima, Daisuke Abe, Tomonori Mori, Tadayuki Tsuda, Tetsuya Numata, Naoya Asanuma
-
Patent number: 11209773Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.Type: GrantFiled: April 20, 2020Date of Patent: December 28, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Noriyuki Komatsu, Masaki Ojima, Daisuke Abe, Tomonori Mori, Tadayuki Tsuda, Tetsuya Numata, Naoya Asanuma
-
Publication number: 20210216036Abstract: 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: ApplicationFiled: March 30, 2021Publication date: July 15, 2021Inventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Patent number: 10996620Abstract: 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: April 16, 2020Date of Patent: May 4, 2021Assignee: Canon Kabushiki KaishaInventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Publication number: 20200341428Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.Type: ApplicationFiled: April 20, 2020Publication date: October 29, 2020Inventors: Noriyuki Komatsu, Masaki Ojima, Daisuke Abe, Tomonori Mori, Tadayuki Tsuda, Tetsuya Numata, Naoya Asanuma
-
Publication number: 20200341427Abstract: 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: ApplicationFiled: April 16, 2020Publication date: October 29, 2020Inventors: Noriyuki Komatsu, Masaki Ojima, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda
-
Patent number: 8995900Abstract: A cleaning member includes a blade portion contacted to a member-to-be-cleaned with respect to a direction counter to a movement direction of the member-to-be-cleaned, and a flexible supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the other end portion in a side remote from a surface of the member-to-be-cleaned toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the member-to-be-cleaned. The portion-to-be-fixed is provided downstream of the contact portion with respect to the movement direction of the member-to-be-cleaned. The blade portion is supported by the supporting member in contact to only the one end portion.Type: GrantFiled: August 29, 2012Date of Patent: March 31, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Shindo, Masao Uyama, Masaki Ojima
-
Publication number: 20140153989Abstract: A cleaning member includes: a blade portion contacted to the member-to-be-cleaned with respect to a counter direction to a movement direction of the member-to-be-cleaned; and a flexible supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the another end portion in a side remote from a surface of the member-to-be-cleaned toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the member-to-be-cleaned. The portion-to-be-fixed is provided downstream of the contact portion with respect to movement direction of the member-to-be-cleaned. The blade portion is supported by the supporting member in contact to only the one end portion.Type: ApplicationFiled: August 29, 2012Publication date: June 5, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Shindo, Masao Uyama, Masaki Ojima
-
Patent number: 8521041Abstract: An image forming apparatus includes an image bearing member; a plurality of developing cartridges including respective toner accommodating portions for accommodating toners for forming an image on the image bearing member; a discriminating portion for discriminating color of the toner accommodated in each of the plurality of developing cartridges; a controller capable of controlling an image forming operation in a state in which the developing cartridges, of the plurality of developing cartridges, accommodating the toners of the same color are mounted; and a storing portion for storing lifetime information of the plurality of developing cartridges, respectively. When the developing cartridges accommodating the toners of the same color are mounted, the controller determines the developing cartridge, of the developing cartridges accommodating the toners of the same color, to be used for performing the image forming operation, on the basis of the lifetime information.Type: GrantFiled: January 27, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Katsuhiro Kojima, Kenji Matsuda, Masaki Ojima, Minoru Matsuguma
-
Patent number: 8078071Abstract: An image forming apparatus has: a photosensitive drum onto which images are formed; and a primary transfer roller which sequentially forms the color images onto the photosensitive drum by using a plurality of developing devices having different color developers and transfers the color images formed on the drum onto a transfer member or a recording medium. Order of forming the images onto an image bearing member on a photosensitive member is switched based on a use amount of each of the plurality of developing devices.Type: GrantFiled: February 1, 2007Date of Patent: December 13, 2011Assignee: Canon Kabushiki KaishaInventors: Katsuhiro Kojima, Kenji Matsuda, Hideki Matsumoto, Masaki Ojima, Minoru Matsuguma
-
Publication number: 20110200340Abstract: An image forming apparatus includes an image bearing member; a plurality of developing cartridges including respective toner accommodating portions for accommodating toners for forming an image on the image bearing member; a discriminating portion for discriminating color of the toner accommodated in each of the plurality of developing cartridges; a controller capable of controlling an image forming operation in a state in which the developing cartridges, of the plurality of developing cartridges, accommodating the toners of the same color are mounted; and a storing portion for storing lifetime information of the plurality of developing cartridges, respectively. When the developing cartridges accommodating the toners of the same color are mounted, the controller determines the developing cartridge, of the developing cartridges accommodating the toners of the same color, to be used for performing the image forming operation, on the basis of the lifetime information.Type: ApplicationFiled: January 27, 2011Publication date: August 18, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Katsuhiro Kojima, Kenji Matsuda, Masaki Ojima, Minoru Matsuguma
-
Publication number: 20100260511Abstract: The present invention is directed to clean a collecting member without making toner on the collecting member enter a developing device and to reduce deterioration in throughput accompanying the operation of cleaning the collecting member with a simple configuration. A control unit is provided that executes cleaning operation of transferring toner collected by a cleaning roller to a conveyance belt via a photosensitive drum and collecting the toner by a cleaning device. In the cleaning operation, the control unit develops at least a surface part to which the toner is transferred from the cleaning roller, in the surface portion of the photosensitive drum with the toner by the developing device.Type: ApplicationFiled: April 5, 2010Publication date: October 14, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Katsuhiro Kojima, Masaki Ojima