Patents by Inventor Ichiro Kawahara

Ichiro Kawahara 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).

  • Patent number: 9459550
    Abstract: An applying device includes an applying member and a contact member. The applying member applies voltage to an image bearing member and has an elastic layer and an endless surface layer. The elastic layer is disposed facing the image bearing member, is rotatable about a rotation axis, and is composed of a foam material. The surface layer surrounds an outer periphery of the elastic layer, is supported by the elastic layer in a non-bonded state, and is rotatable together therewith. The contact member comes into contact with the surface layer at an upstream side, in a rotational direction of the applying member, relative to an imaginary line segment connecting a rotation axis of the image bearing member and the rotation axis of the applying member, so as to apply tension to the surface layer at a contact position between the image bearing member and the applying member.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: October 4, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Ichiro Kawahara, Hiroki Ando, Mikio Yamaguchi, Hirofumi Iida, Keishi Araki
  • Patent number: 9436114
    Abstract: Provided is an image forming apparatus including an image holder that is provided to be rotatable, and a charging member that includes a charging member main body and a cover member, in which an outer circumferential surface of the cover member is disposed to be in contact with the image holder, and that charges the image holder, wherein a circumferential speed of one member of the rotating image holder and the rotating charging member main body is greater than a circumferential speed of the other member, and wherein the cover member moves to follow a movement of the one member at a contact portion where the cover member and the image holder come into contact with each other, and a portion of the cover member that is positioned on an upstream side of the contact portion is drawn toward a downstream side.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 6, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Ichiro Kawahara, Hiroki Ando, Mikio Yamaguchi, Hirofumi Iida, Keishi Araki
  • Patent number: 9411254
    Abstract: A charging device includes a charging member and a cleaning member. The charging member is driven and rotated while in contact with an outer peripheral surface of an image carrier which rotates, and charges the image carrier. The cleaning member is driven and rotated while in contact with an outer peripheral surface of the charging member and cleans the outer peripheral surface of the charging member. In the charging device, a radius of the charging member is less than a radius of the cleaning member.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: August 9, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Ichiro Kawahara, Mikio Yamaguchi, Hirofumi Iida
  • Patent number: 9405210
    Abstract: Provided is an image forming apparatus including an image holder that is mounted at a predetermined mount position, a charging member that charges the image holder, a cleaning member that cleans the charging member, a holding member that holds the charging member and the cleaning member, includes a mount section on which the cleaning member is mounted, is urged toward the image holder side, and recedes when the image holder is mounted at the predetermined mount position, and a drop-out prevention section that is disposed at a position facing the mount section which is included in the holding member at a receding position and that prevents the cleaning member from dropping out from the mount section.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: August 2, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Mikio Yamaguchi, Ichiro Kawahara, Hiroki Ando, Keishi Araki, Hirofumi Iida
  • Publication number: 20160041489
    Abstract: Provided is an image forming apparatus including an image holder that is provided to be rotatable, and a charging member that includes a charging member main body and a cover member, in which an outer circumferential surface of the cover member is disposed to be in contact with the image holder, and that charges the image holder, wherein a circumferential speed of one member of the rotating image holder and the rotating charging member main body is greater than a circumferential speed of the other member, and wherein the cover member moves to follow a movement of the one member at a contact portion where the cover member and the image holder come into contact with each other, and a portion of the cover member that is positioned on an upstream side of the contact portion is drawn toward a downstream side.
    Type: Application
    Filed: January 22, 2015
    Publication date: February 11, 2016
    Inventors: Ichiro KAWAHARA, Hiroki ANDO, Mikio YAMAGUCHI, Hirofumi IIDA, Keishi ARAKI
  • Publication number: 20160018752
    Abstract: Provided is an image forming apparatus including an image holder that is mounted at a predetermined mount position, a charging member that charges the image holder, a cleaning member that cleans the charging member, a holding member that holds the charging member and the cleaning member, includes a mount section on which the cleaning member is mounted, is urged toward the image holder side, and recedes when the image holder is mounted at the predetermined mount position, and a drop-out prevention section that is disposed at a position facing the mount section which is included in the holding member at a receding position and that prevents the cleaning member from dropping out from the mount section.
    Type: Application
    Filed: February 2, 2015
    Publication date: January 21, 2016
    Inventors: Mikio YAMAGUCHI, Ichiro KAWAHARA, Hiroki ANDO, Keishi ARAKI, Hirofumi IIDA
  • Publication number: 20150261114
    Abstract: An applying device includes an applying member and a contact member. The applying member applies voltage to an image bearing member and has an elastic layer and an endless surface layer. The elastic layer is disposed facing the image bearing member, is rotatable about a rotation axis, and is composed of a foam material. The surface layer surrounds an outer periphery of the elastic layer, is supported by the elastic layer in a non-bonded state, and is rotatable together therewith. The contact member comes into contact with the surface layer at an upstream side, in a rotational direction of the applying member, relative to an imaginary line segment connecting a rotation axis of the image bearing member and the rotation axis of the applying member, so as to apply tension to the surface layer at a contact position between the image bearing member and the applying member.
    Type: Application
    Filed: February 4, 2015
    Publication date: September 17, 2015
    Inventors: Ichiro KAWAHARA, Hiroki ANDO, Mikio YAMAGUCHI, Hirofumi IIDA, Keishi ARAKI
  • Publication number: 20140294430
    Abstract: A charging device includes a charging member and a cleaning member. The charging member is driven and rotated while in contact with an outer peripheral surface of an image carrier which rotates, and charges the image carrier. The cleaning member is driven and rotated while in contact with an outer peripheral surface of the charging member and cleans the outer peripheral surface of the charging member. In the charging device, a radius of the charging member is less than a radius of the cleaning member.
    Type: Application
    Filed: September 19, 2013
    Publication date: October 2, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ichiro KAWAHARA, Mikio YAMAGUCHI, Hirofumi IIDA
  • Patent number: 8290391
    Abstract: A cleaning member has a core member that is freely rotatable, a cleaning material that is spirally wound around an outer peripheral surface of the core member, and holding members. The holding members hold end portions of the cleaning material by the end portions being nipped between the holding members and the outer peripheral surface of the core member. An opening is provided in each of the holding members. Each of the openings is continuously open in line with an axial direction of the core member, and the cleaning material is exposed from the openings.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 16, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Ichiro Kawahara
  • Publication number: 20110170899
    Abstract: A cleaning member has a core member that is freely rotatable, a cleaning material that is spirally wound around an outer peripheral surface of the core member, and holding members. The holding members hold end portions of the cleaning material by the end portions being nipped between the holding members and the outer peripheral surface of the core member. An opening is provided in each of the holding members. Each of the openings is continuously open in line with an axial direction of the core member, and the cleaning material is exposed from the openings.
    Type: Application
    Filed: September 17, 2010
    Publication date: July 14, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Ichiro KAWAHARA
  • Patent number: 7620352
    Abstract: A developing device comprises: a case having a developing opening; a cylindrical-shaped developer carry member disposed exposed in part to the developing opening, and rotatable for holding and carrying a developer; and a magnet member disposed fixed within the developer carry member and comprising two or more magnetic poles including a developing magnetic pole and a developer peel-off magnetic pole. In such portion of the case that not only is opposed to the outer peripheral surface of the developer carry member after it passes through the developing area but also corresponds to an area which extends from the developing magnetic pole in the rotation direction up to the developer peel-off magnetic pole and provides a normal direction magnetic flux density of 20 mT or less, a projecting portion where a clearance between its opposed portion and the outer peripheral surface of the developer carry member becomes narrowest is formed.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: November 17, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ichiro Kawahara, Takafumi Wakai
  • Patent number: 7487119
    Abstract: Image data of a document generated by a key business terminal or a key business server is sent to a database management server, and this image data and the description contents of the document represented by this image data are stored to a freight tracking information database base. Image data and data of the description contents of the document stored in the freight tracking information database are viewed or searched by an authenticated operator who operates a user terminal. Image data representing the progress of transport of goods is sent to the user terminal from the database management server according to the operator's instruction, and an image represented by this image data is displayed by the user terminal.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 3, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsuyuki Goto, Hisayuki Ogawa, Keisuke Sekiguchi, Seiji Kikumoto, Eiichi Tezuka, Ichiro Kawahara, Tetsuya Oda, Hirohiko Kimura
  • Publication number: 20080080906
    Abstract: A developing device comprises: a case having a developing opening; a cylindrical-shaped developer carry member disposed exposed in part to the developing opening, and rotatable for holding and carrying a developer; and a magnet member disposed fixed within the developer carry member and comprising two or more magnetic poles including a developing magnetic pole and a developer peel-off magnetic pole. In such portion of the case that not only is opposed to the outer peripheral surface of the developer carry member after it passes through the developing area but also corresponds to an area which extends from the developing magnetic pole in the rotation direction up to the developer peel-off magnetic pole and provides a normal direction magnetic flux density of 20 mT or less, a projecting portion where a clearance between its opposed portion and the outer peripheral surface of the developer carry member becomes narrowest is formed.
    Type: Application
    Filed: April 6, 2007
    Publication date: April 3, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ichiro Kawahara, Takafumi Wakai
  • Patent number: 7088943
    Abstract: Regulatory member having a groove formed therein is provided at area where toner storage chamber and toner stirring chamber are in communication with each other. A quantity of toner supplied from toner storage chamber to toner stirring chamber is regulated by rotating regulatory member. Groove is formed in regulatory member.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: August 8, 2006
    Assignee: Fuji Xerox Co., Ltd
    Inventors: Kazuaki Iikura, Ichiro Kawahara, Kazunari Iizuka, Koichi Tanaka
  • Publication number: 20040228660
    Abstract: Regulatory member having a groove formed therein is provided at area where toner storage chamber and toner stirring chamber are in communication with each other. a quantity of toner supplied from toner storage chamber to toner stirring chamber is regulated by rotating regulatory member. Groove is formed in regulatory member.
    Type: Application
    Filed: February 4, 2004
    Publication date: November 18, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Iikura, Ichiro Kawahara, Kazunari Iizuka, Koichi Tanaka
  • Patent number: 6660855
    Abstract: The crystal of the invention is crystal of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate which is stable substantially without decomposition or degradation of properties even when left to stand at room temperature for 1 year. The crystal of the invention can be prepared by a process comprising the steps of concentrating a solution containing diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate represented by the formula (2) wherein Ph is a phenyl group, diluting the concentrate with acetic ester and mixing the diluted solution with hexane or a solvent mixture of hexane and acetic ester to crystallize the diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: December 9, 2003
    Assignees: Otsuka Chemical Co., Ltd., Taiho Pharmaceutical Co., Ltd.
    Inventors: Akihiro Shimabayashi, Ichiro Kawahara
  • Publication number: 20020193588
    Abstract: The crystal of the invention is crystal of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate which is stable substantially without decomposition or degradation of properties even when left to stand at room temperature for 1 year.
    Type: Application
    Filed: April 8, 2002
    Publication date: December 19, 2002
    Inventors: Akihiro Shimabayashi, Ichiro Kawahara
  • Publication number: 20020193587
    Abstract: The crystal of the invention is the crystal of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate 1,1-dioxide which is stable substantially without decomposition or degradation of properties even when left to stand at a temperature of 5 to 35° C. for a period of 1 year.
    Type: Application
    Filed: April 8, 2002
    Publication date: December 19, 2002
    Inventors: Akihiro Shimabayashi, Ichiro Kawahara
  • Publication number: 20020077915
    Abstract: Image data of a document generated by a key business terminal or a key business server is sent to a database management server, and this image data and the description contents of the document represented by this image data are stored to a freight tracking information database base. Image data and data of the description contents of the document stored in the freight tracking information database are viewed or searched by an authenticated operator who operates a user terminal. Image data representing the progress of transport of goods is sent to the user terminal from the database management server according to the operator's instruction, and an image represented by this image data is displayed by the user terminal.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 20, 2002
    Inventors: Mitsuyuki Goto, Hisayuki Ogawa, Keisuke Sekiguchi, Seiji Kikumoto, Eiichi Tezuka, Ichiro Kawahara, Tetsuya Oda, Hirohiko Kimura
  • Patent number: 6334038
    Abstract: An electrophotograph development apparatus for developing an electrostatic latent image formed on an electrostatic latent image carrier body with magnetic developer includes a developer carrier body having a magnetic roller, and a thin layer forming member for forming the magnetic developer on the developer carrier body into a thin layer. A magnetic pole of the magnetic roller is disposed at a position of a &thgr; degree in an upper stream side relative to a rotational direction of the developer carrier body from a contact point of the thin film forming member and the developer carrier body, and &thgr; is in a range of 0 degree≦&thgr;≦10 degree. A relation between a surface roughness Rz′ of the developer carrier body and a surface roughness Rz of the thin layer forming member is represented by −10 &mgr;m≦(Rz-Rz′)≦5 &mgr;m.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: December 25, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Ichiro Kawahara