Patents by Inventor Masatomo Tsuzuki
Masatomo Tsuzuki 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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Patent number: 9832895Abstract: A display device includes an assembly including a stand placed on an installation plane, a flat-plate-like display section supported by the stand, and a weight object provided on a back face side of the display section, the stand having a contact portion in contact with the installation plane, the contact portion being provided inside a first triangle formed by second and third straight lines and the installation plane, the second and third straight lines both passing through center of gravity of the display section and forming, with respect to a first straight line, an angle equal to a back-falling angle and a front-falling angle of the assembly, respectively, and the first straight line passing through the center of gravity of the display section and being perpendicular to the installation plane.Type: GrantFiled: March 17, 2014Date of Patent: November 28, 2017Assignee: Saturn Licensing LLCInventor: Masatomo Tsuzuki
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Patent number: 8862015Abstract: A process cartridge includes an electrophotographic photosensitive drum, a frame for supporting the electrophotographic photosensitive drum, a developer roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer, and a developer supplying roller for supplying the developer to the developing roller. The process cartridge also includes first and second portions-to-be-positioned on ends of the cartridge, and a portion-to-be urged for receiving an elastic force. A developer supplying roller bias contact is provided exposed at an end side of the process cartridge for receiving a supplying roller bias voltage to be supplied to the developer side supplying roller, with the cartridge side developer supplying roller bias facing obliquely downward.Type: GrantFiled: July 24, 2013Date of Patent: October 14, 2014Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Publication number: 20140293140Abstract: A display device includes an assembly including a stand placed on an installation plane, a flat-plate-like display section supported by the stand, and a weight object provided on a back face side of the display section, the stand having a contact portion in contact with the installation plane, the contact portion being provided inside a first triangle formed by second and third straight lines and the installation plane, the second and third straight lines both passing through center of gravity of the display section and forming, with respect to a first straight line, an angle equal to a back-falling angle and a front-falling angle of the assembly, respectively, and the first straight line passing through the center of gravity of the display section and being perpendicular to the installation plane.Type: ApplicationFiled: March 17, 2014Publication date: October 2, 2014Applicant: SONY CORPORATIONInventor: MASATOMO TSUZUKI
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Publication number: 20140056614Abstract: A process cartridge includes an electrophotographic photosensitive drum, a frame for supporting the electrophotographic photosensitive drum, a developer roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer, and a developer supplying roller for supplying the developer to the developing roller. The process cartridge also includes first and second portions-to-be-positioned on ends of the cartridge, and a portion-to-be urged for receiving an elastic force. A developer supplying roller bias contact is provided exposed at an end side of the process cartridge for receiving a supplying roller bias voltage to be supplied to the developer side supplying roller, with the cartridge side developer supplying roller bias facing obliquely downward.Type: ApplicationFiled: July 24, 2013Publication date: February 27, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Patent number: 8526841Abstract: A process cartridge includes an electrophotographic photosensitive drum and a frame for supporting the electrophotographic photosensitive drum. The process cartridge also includes a first portion-to-be-positioned for being positioned to a first main assembly side positioning portion provided in the main assembly of an apparatus, a second portion-to-be-positioned for being positioned to a second main assembly side positioning portion provided in the main assembly of the apparatus, and a longitudinal positioning portion to be positioned by a main assembly side longitudinal positioning portion provided in the main assembly of the apparatus. The apparatus still further includes a portion-to-be-urged for receiving an inclined downward elastic force of a first main assembly side elastic member provided in the main assembly of the apparatus to urge the longitudinal positioning portion and the second portion-to-be-positioned.Type: GrantFiled: November 19, 2010Date of Patent: September 3, 2013Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Patent number: 8417144Abstract: An image forming apparatus has a tray, which is able to be drawn out of the apparatus and on which a plurality of cartridges of different sizes can be mounted. A cartridge, being the largest in size among a plurality of process cartridges, is detachably arranged at a location at which it is first exposed to outside when a cartridge tray is drawn out. A developer storage portion of the largest cartridge has the largest capacity and stores a developer of a black color.Type: GrantFiled: February 16, 2012Date of Patent: April 9, 2013Assignee: Canon Kabushiki KaishaInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Publication number: 20120148295Abstract: An image forming apparatus has a tray, which is able to be drawn out of the apparatus and on which a plurality of cartridges of different sizes can be mounted. A cartridge, being the largest in size among a plurality of process cartridges, is detachably arranged at a location at which it is first exposed to outside when a cartridge tray is drawn out. A developer storage portion of the largest cartridge has the largest capacity and stores a developer of a black color.Type: ApplicationFiled: February 16, 2012Publication date: June 14, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Patent number: 8150293Abstract: An image forming apparatus has a tray, which is able to be drawn out of the apparatus and on which a plurality of cartridges of different sizes can be mounted. A cartridge, being the largest in size among a plurality of process cartridges, is detachably arranged at a location at which it is first exposed to outside when a cartridge tray is drawn out. A developer storage portion of the largest cartridge has the largest capacity and stores a developer of a black color.Type: GrantFiled: July 6, 2010Date of Patent: April 3, 2012Assignee: Canon Kabushiki KaishaInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Patent number: 8139979Abstract: A process cartridge is provided detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes an electrophotographic photosensitive drum, a frame for supporting the electrophotographic photosensitive drum, a developing roller, and a developer supplying roller. The process cartridge further includes portions-to-be-supported, portions-to-be-positioned, a portion-to-be-urged, and a cartridge side developer supply roller bias contact. The process cartridge can be positioned with high accuracy relative to the main assembly of an image forming apparatus.Type: GrantFiled: November 17, 2010Date of Patent: March 20, 2012Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Publication number: 20110123223Abstract: A process cartridge includes an electrophotographic photosensitive drum and a frame for supporting the electrophotographic photosensitive drum. The process cartridge also includes a first portion-to-be-positioned for being positioned to a first main assembly side positioning portion provided in the main assembly of an apparatus, a second portion-to-be-positioned for being positioned to a second main assembly side positioning portion provided in the main assembly of the apparatus, and a longitudinal positioning portion to be positioned by a main assembly side longitudinal positioning portion provided in the main assembly of the apparatus. The apparatus still further includes a portion-to-be-urged for receiving an inclined downward elastic force of a first main assembly side elastic member provided in the main assembly of the apparatus to urge the longitudinal positioning portion and the second portion-to-be-positioned.Type: ApplicationFiled: November 19, 2010Publication date: May 26, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Publication number: 20110116832Abstract: A process cartridge is provided detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes an electrophotographic photosensitive drum, a frame for supporting the electrophotographic photosensitive drum, a developing roller, and a developer supplying roller. The process cartridge further includes portions-to-be-supported, portions-to-be-positioned, a portion-to-be-urged, and a cartridge side developer supply roller bias contact. The process cartridge can be positioned with high accuracy relative to the main assembly of an image forming apparatus.Type: ApplicationFiled: November 17, 2010Publication date: May 19, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Patent number: 7890012Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus including a movable member movable from an outside of the main assembly of the apparatus to an inside thereof while carrying the process cartridge. The cartridge includes a drum, charging and developing rollers, rotatably connected first and second frames supporting different rollers, drum and developing roller driving force receiving portions, first and second portions-to-be-supported, on one and the other ends of the first frame, first and second portions-to-be-positioned, on one and the other ends of the first frame positioned to first and second main assembly side positioning portions during a lowering movement of the movable member toward a transfer belt, charging and developing bias contacts exposed at the other end, and a portion-to-be-urged, on the first frame upper surface for receiving an elastic force to position the process cartridge relative to the main assembly.Type: GrantFiled: January 17, 2007Date of Patent: February 15, 2011Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Patent number: 7856192Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus including a movable member movable from an outside of the main assembly of the apparatus to an inside thereof while carrying the cartridge. The cartridge includes a drum, charging and developing rollers, rotatably connected first and second frames supporting different rollers, drum and developing roller driving force receiving portions, first and second portions-to-be-supported, on one and the other ends of the first frame, first and second portions-to-be-positioned, on one and the other ends of the first frame positioned to first and second main assembly side positioning portions during a lowering movement of the movable member toward a transfer belt, charging and developing bias contacts exposed at the other end, and a portion-to-be-urged, on the first frame upper surface for receiving an elastic force to position the process cartridge relative to the main assembly.Type: GrantFiled: November 21, 2007Date of Patent: December 21, 2010Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Publication number: 20100272469Abstract: An image forming apparatus has a tray, which is able to be drawn out of the apparatus and on which a plurality of cartridges of different sizes can be mounted. A cartridge, being the largest in size among a plurality of process cartridges, is detachably arranged at a location at which it is first exposed to outside when a cartridge tray is drawn out. A developer storage portion of the largest cartridge has the largest capacity and stores a developer of a black color.Type: ApplicationFiled: July 6, 2010Publication date: October 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Patent number: 7778570Abstract: An image forming apparatus has a tray, which is able to be drawn out of the apparatus and on which a plurality of cartridges of different sizes can be mounted. A cartridge, being the largest in size among a plurality of process cartridges, is detachably arranged at a location at which it is first exposed to outside when a cartridge tray is drawn out. A developer storage portion of the largest cartridge has the largest capacity and stores a developer of a black color.Type: GrantFiled: July 31, 2008Date of Patent: August 17, 2010Assignee: Canon Kabushiki KaishaInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Publication number: 20090041498Abstract: In an image forming apparatus in which a tray, on which a plurality of cartridges of different sizes can be mounted, is able to be drawn out, a waste of space occurs. A cartridge (50k), being the largest in size among a plurality of process cartridges (50y, 50m, 50c, 50k), is detachably arranged at a location at which it is first exposed to outside when a cartridge tray (13) is drawn out. A developer storage portion having the largest capacity stores a developer of a black color.Type: ApplicationFiled: July 31, 2008Publication date: February 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Atsushi Numagami, Masatomo Tsuzuki, Masaki Kakitani, Akira Yoshimura
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Publication number: 20080159775Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus including a movable member movable from an outside of the main assembly of the apparatus to an inside thereof while carrying said process cartridge, said process cartridge includes 1) an electrophotographic photosensitive drum; 2) a charging roller for charging said electrophotographic photosensitive drum; 3) a first frame for supporting said electrophotographic photosensitive drum and said charging roller; 4) a developing roller for developing an electrostatic latent image formed on said electrophotographic photosensitive drum with a developer; 5) a second frame for supporting said developing roller, said second frame being rotatably connected with said first frame; 6) a drum driving force receiving portion, provided on one longitudinal end of said electrophotographic photosensitive drum, for receiving a driving force for rotating said electrophotographic photosensitive drum from the main assembly ofType: ApplicationFiled: November 21, 2007Publication date: July 3, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Publication number: 20080159772Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus including a movable member movable from an outside of the main assembly of the apparatus to an inside thereof while carrying the process cartridge. The cartridge includes a drum, charging and developing rollers, rotatably connected first and second frames supporting different rollers, drum and developing roller driving force receiving portions, first and second portions-to-be-supported, on one and the other ends of the first frame, first and second portions-to-be-positioned, on one and the other ends of the first frame positioned to first and second main assembly side positioning portions during a lowering movement of the movable member toward a transfer belt, charging and developing bias contacts exposed at the other end, and a portion-to-be-urged, on the first frame upper surface for receiving an elastic force to position the process cartridge relative to the main assembly.Type: ApplicationFiled: January 17, 2007Publication date: July 3, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Isao Koishi, Susumu Nittani, Masatomo Tsuzuki, Chikara Imaizumi
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Patent number: 7272339Abstract: A process cartridge and an image forming apparatus which can stably keep a developing separated state for a long period by a compact construction, and in which when a separating member has been mounted on the process cartridge, the separating member is supported in a center impeller fashion by one frame, and the other frame is supported by a portion therebetween to thereby keep the developing separated state.Type: GrantFiled: May 26, 2005Date of Patent: September 18, 2007Assignee: Canon Kabushiki KaishaInventors: Masatomo Tsuzuki, Kanji Yokomori, Susumu Nittani
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Patent number: D631092Type: GrantFiled: December 3, 2008Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Susumu Nittani, Masatomo Tsuzuki, Shinjiro Toba, Akira Yoshimura