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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Kawai; Tachio
Address:
Odawara, JP
No. of patents:
35
Patents:












Patent Number Title Of Patent Date Issued
D639846 Process cartridge June 14, 2011
D639335 Process cartridge June 7, 2011
D638057 Process cartridge May 17, 2011
D638056 Process cartridge May 17, 2011
D474497 Image forming apparatus May 13, 2003
D474232 Image forming apparatus May 6, 2003
8249485 Process cartridge with portions to be supported and regulated during insertion of the cartridge August 21, 2012
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the apparatus includes a supporting member, a movable member for moving the supporting member in a horizontal direction and upward and downward directions, an operat
8238785 Process cartridge and image forming apparatus August 7, 2012
A process cartridge includes a first guided portion provided on a photosensitive member unit at a downstream side of a mounting direction of the process cartridge, a second guided portion provided along the mounting direction, and a third guided portion provided on a developing unit
8180262 Process cartridge, developer supply cartridge and electrophotographic image forming apparatus May 15, 2012
A process cartridge comprises an electrophotographic photosensitive drum and a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with developer. The cartridge further comprises a receiving side developer accommodating
8045899 Process cartridge, developer supply cartridge and electrophotographic image forming apparatus October 25, 2011
A developer supply cartridge supplies a developer into a process cartridge, and is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a drum, a developing roller, a receiving-side shutter portion opening and closi
7848684 Process cartridge, developer supply cartridge and electrophotographic image forming apparatus December 7, 2010
A developer supply cartridge supplies a developer into a process cartridge, and is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a drum, a developing roller, a receiving-side shutter portion opening and closi
7555249 Process cartridge, developer supply cartridge and electrophotographic image forming apparatus June 30, 2009
A developer supply cartridge supplies developer into a process cartridge and is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a drum, a developing roller, a receiving-side shutter opening and closing a develo
7457569 Process cartridge, developer supply cartridge and electrophotographic image forming apparatus November 25, 2008
A developer supply cartridge supplies a developer into a process cartridge, and is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a drum, a developing roller, a receiving-side shutter portion opening and closi
7346298 Developing device, process cartridge, and electrophotographic image-forming apparatus March 18, 2008
A developing device includes a developer container divided into a developing section and a mixing section in which developer is conveyed in the opposite directions. A conveying member which conveys the developer in the longitudinal direction is disposed only in the developing section,
7310489 Process cartridge including first and second portions to be positioned and first and second port December 18, 2007
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit for rotatably supporting the drum, first and second portions to be positi
7257353 Developing apparatus August 14, 2007
A developing apparatus develops a latent image formed on an electrophotographic photosensitive member with a developer in an electrophotographic image forming apparatus The device includes a developer accommodating portion and a developer stirring member stirring the developer in the
7233752 Process cartridge and electrophotographic image forming apparatus June 19, 2007
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes first and second end covers, first and second bottom-surface portions to be guided by first and second main assembly guide portions, first, second, and third portion
7085516 Process cartridge and electrophotographic image forming apparatus August 1, 2006
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a first frame; a second frame coupled with the first frame for rotation about a shaft relative to each other; a first electrical contact, provided in the first fram
7027754 Process cartridge and electrophotographic image forming apparatus April 11, 2006
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes first and second end covers, first and second bottom-surface portions to be guided by first and second main assembly guide portions, first, second, and third portion
6947686 Process cartridge and spacer for same September 20, 2005
A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive drum; a developing roller for developing an electrostatic latent image formed on the drum; a first frame supporting the drum; a second frame supporting
6560422 DEVELOPMENT CARTRIDGE, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND T May 6, 2003
A toner seal member to be used for sealing a developer container including a developer accommodating portion for accommodating a developer; and an opening for supplying the developer from the developer accommodating portion, the toner seal member being for sealing the opening, wherein th
6496667 Cartridge detachably attachable to image forming apparatus December 17, 2002
A cartridge detachably mountable to a main body of an image forming apparatus, includes a developing frame, a developer carrying member provided in the developer frame and adapted to hold and carry developer, a developer containing container for containing the developer and for suppl
6480687 Process cartridge, handle attaching method and electrophotographic image forming apparatus November 12, 2002
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum; a process device acting on the electrophotographic photosensitive drum; a cartridge frame for supporting the photosensitive d
6463232 Handle, process cartridge, handle attaching method and electrophotographic image forming apparat October 8, 2002
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum; a process device acting on the photosensitive drum; a cartridge frame for supporting the photosensitive drum; a first bearing
6438347 DEVELOPING DEVICE FEATURING A CONTROL MEMBER HAVING A CENTER PORTION WIDTH WIDER THAN END PORTIO August 20, 2002
In a developing device, a developer carrier carries developer and a control member controls the thickness of the developer on the developer carrier. The control member has an abutting member that abuts against a reference plane of a main body of the developing device and an elastic membe
6381430 Assembling and disassembling methods for developing cartridge April 30, 2002
An assembling method of a cartridge detachably mountable to a main assembly of an image forming apparatus and having a developing device, the method including the steps of: preparing a container unit provided with a developing frame; mounting a toner supplying roller to the developing
6282395 Developing device and process cartridge August 28, 2001
In a developing device, a developer carrier carries developer and a control member controls the thickness of the developer on the developer carrier. A connection member that connects the control member to a main body of the developing device controls lateral movement of the control membe
6181897 Developing apparatus January 30, 2001
A developing apparatus including a developing container provided with an opening portion, a developer bearing member, seal members, a flexible sheet member provided extending in a lengthwise direction of the developer bearing member and provided with overlapping portions overlapping the
6115567 Support part, developer container, process cartridge and electrophotographic image forming appar September 5, 2000
A support part attached to a developer container used in an electrophotographic image forming apparatus includes a support portion for supporting one end of an agitating member for agitating developer contained in the developer container, a fitting portion fitted into a through hole
6070027 Developing apparatus with auxiliary seal disposed outside of end seal May 30, 2000
A developing apparatus including a developing frame, a developing roller disposed at an opening portion of the developing frame and adapted for bearing a developing agent, a first seal member for closing a gap between the developing frame and the developing roller along an entire length
6061535 Developing cartridge, for a revolver type developing device, with sensing means for sensing the May 9, 2000
A developing cartridge for developing a latent image formed on the photosensitive member, wherein the developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; a developing m
6055406 Cleaning frame, cleaning device, process cartridge and electrophotographic image forming apparat April 25, 2000
A cleaning device for removing toner from an electrophotographic photosensitive member usable with an electrophotographic image forming apparatus includes a cleaning member for removing toner from the electrophotographic photosensitive member; a toner transporting portion having a to
6047150 Developing cartridge having cover member April 4, 2000
The present invention provides a developing cartridge attachable to and detachable from a main body of an image forming apparatus comprising a cartridge frame, developing device for developing a latent image formed on an image bearing member, and a shutter member supported by the cartrid
6002898 Developing cartridge and image forming apparatus December 14, 1999
A developing cartridge for developing a latent image formed on the photosensitive member, wherein the developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; a developing m
5887227 Developing device March 23, 1999
A developing device which is capable of being detachably mounted to a rotary unit of an image forming apparatus and which includes a developer carrying member for forming a development region together with an image carrying member and rotating as carrying a developer, a developer con










 
 
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