Patents by Inventor Kazushige Nakamura
Kazushige Nakamura 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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Publication number: 20050246828Abstract: When the human body is washed, washing water is sprayed on a surface to be washed of the human body from a posterior nozzle and a bidet nozzle. On the other hand, when the human body is not washed, the posterior nozzle and the bidet nozzle are subjected to high-temperature cleaning by a nozzle cleaning nozzle. When it is detected that a sanitary washing apparatus has not been employed yet, the posterior nozzle and the bidet nozzle are allowed to be cleaned by the nozzle cleaning nozzle by a controller. After a cleaning operation is terminated, a user is notified that the cleaning operation is terminated by a notification lamp and a speaker. A scale inhibiting material supply device is interposed in a pipe on the upstream side of an instantaneous heating device by the nozzle cleaning nozzle.Type: ApplicationFiled: August 22, 2003Publication date: November 10, 2005Inventors: Shigeru Shirai, Tomohide Matsumoto, Hideki Ohno, Kazushige Nakamura, Toshinari Matsumoto, Mitsuyuki Furubayashi, Takemi Oketa
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Patent number: 6942952Abstract: The present invention provides an electrophotographic photosensitive member capable of maintaining high transfer efficiency without causing large transfer current for a long-term use, obtaining an excellent image, and achieving those effects especially when being applied to a color electrophotographic apparatus. The invention also provides a process cartridge and an electrophotographic apparatus each having such a photosensitive member. The present invention includes an electrophotographic photosensitive member having a photosensitive layer on a support, a surface layer containing diorganopolysiloxane having specific repeating structure units ? and ?, and having a weight-average molecular weight of 1,000 to 1,000,000; in which a content of the diorganopolysiloxane in the surface layer is 0.01 to 20% by weight based on the entire weight of the surface layer (except in the case where the surface layer contains fluorine atom-containing resin particles).Type: GrantFiled: December 19, 2003Date of Patent: September 13, 2005Assignee: Canon Kabushiki KaishaInventors: Hirotoshi Uesugi, Hideki Anayama, Itaru Yamazaki, Kazushige Nakamura, Akira Yoshida
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Publication number: 20050185987Abstract: Provided are: an electrophotographic apparatus which adopts a contact development system as a development system, which hardly causes toner fusion, and which hardly causes fogging in an output image; and a process cartridge that is detachably attached to a main body of the electrophotographic apparatus. Specifically, provided are: an electrophotographic apparatus equipped with an electrophotographic photoreceptor having a surface layer containing a diorganopolysiloxane having a specific repeating structural unit; and a process cartridge that is detachably attached to a main body of the electrophotographic apparatus.Type: ApplicationFiled: April 20, 2005Publication date: August 25, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Hirotoshi Uesugi, Akira Yoshida, Kazushige Nakamura, Masataka Kawahara
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Patent number: 6769637Abstract: Electromagnetic coil parts 25 and wiring 26 for connection to the electromagnetic coil parts 25 are installed inside injector electric block body 20 in which injector main body housing holes 21h are made in accordance with injector mounting holes Eh of the engine body E side, and injector main bodies 30 having valve parts 35 are inserted into the injector main body housing holes 21h, whereby the valve parts 35 are driven to open and close by means of exciting and non-exciting operation of the electromagnetic coil parts 25. Further, an ignition coil device module is provided with ignition coil devices 102 provided corresponding to a plurality of combustion chambers of an engine, respectively, wherein connection surface base portions at which connecting terminals are exposed are provided on one-side surface of each ignition coil device 102.Type: GrantFiled: November 28, 2001Date of Patent: August 3, 2004Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Kazushige Nakamura, Isao Isshiki, Takao Nozaki, Fumiyoshi Tanigawa
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Publication number: 20040142259Abstract: The present invention provides an electrophotographic photosensitive member capable of maintaining high transfer efficiency without causing large transfer current for a long-term use, obtaining an excellent image, and achieving those effects especially when being applied to a color electrophotographic apparatus. The invention also provides a process cartridge and an electrophotographic apparatus each having such a photosensitive member. The present invention includes an electrophotographic photosensitive member having a photosensitive layer on a support, a surface layer containing diorganopolysiloxane having specific repeating structure units &agr; and &bgr;, and having a weight-average molecular weight of 1,000 to 1,000,000; in which a content of the diorganopolysiloxane in the surface layer is 0.01 to 20% by weight based on the entire weight of the surface layer (except in the case where the surface layer contains fluorine atom-containing resin particles).Type: ApplicationFiled: December 19, 2003Publication date: July 22, 2004Inventors: Hirotoshi Uesugi, Hideki Anayama, Itaru Yamazaki, Kazushige Nakamura, Akira Yoshida
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Patent number: 6664014Abstract: An electrophotographic photosensitive member is constituted by disposing a protective layer and a photosensitive layer on an electroconductive support in this order. The protective layer is characterized by containing an electroconductive particles, fluorine-containing resin particles and a binder resin. The photosensitive layer is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity and a low residual potential and also providing good image forming properties under any environmental condition, improved pause memory characteristics and a decreased transfer memory.Type: GrantFiled: May 6, 1997Date of Patent: December 16, 2003Assignee: Canon Kabushiki KaishaInventors: Toshihiro Kikuchi, Akio Maruyama, Kazushige Nakamura, Michiyo Sekiya
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Patent number: 6656652Abstract: An electrophotographic photosensitive member includes a support, and a charge generation layer and a charge transport layer provided on the support in this order. The charge generation layer contains a charge-generating material in an amount of more than 2 parts by weight and not more than 5 parts by weight based on 1 part by weight of a binder resin, and the support has a surface roughness in which a maximum height RmaxD, a 10-point average roughness Rz, an arithmetic-mean roughness Ra and an unevenness average distance Sm fulfill the following conditions: 1.2 &mgr;m≦RmaxD≦5.0 &mgr;m, 1.2 &mgr;m≦Rz≦3.0 &mgr;m, 0.15 &mgr;m≦Ra≦0.5 &mgr;m, 30 &mgr;m<Sm≦80 &mgr;m. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.Type: GrantFiled: September 26, 2001Date of Patent: December 2, 2003Assignee: Canon Kabushiki KaishaInventors: Shuji Ishii, Kazushige Nakamura, Noriyuki Takagi
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Publication number: 20030140407Abstract: When a user sets water power using a water power adjustment switch in a remote control device, a controller controls the period of pressure fluctuations, the width of pressure fluctuations, and the central pressure of the discharge pressure of a pump on the basis of a signal transmitted by radio from the remote control device. When the user sets the divergent angle of washing water using a washing area adjustment switch in the remote control device, the controller controls the divergent angle of the washing water sprayed from a posterior nozzle on the basis of the signal transmitted by radio from the remote control device. Consequently, the washing water supplied to a side surface of a cylindrical swirl chamber from a first flow path in the posterior nozzle is sprayed from a spray hole as dispersed spiral flow, and the washing water supplied to a lower part of the cylindrical swirl chamber from a second flow path in the posterior nozzle is sprayed from the spray hole as linear flow.Type: ApplicationFiled: January 14, 2003Publication date: July 31, 2003Applicant: MATSUSHITA ELECTIC INDUSTRIAL CO., LTDInventors: Tomohide Matsumoto, Hideki Ohno, Kazushige Nakamura, Shigeru Shirai, Hiroaki Fujii, Shinichi Maruyama, Mune Tao
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Patent number: 6541172Abstract: The present invention provides an electrophotographic photosensitive member wherein a maximum height (RmaxD) of a surface roughness of a support portion is 1.2 &mgr;m RmaxD≦5.0 &mgr;m, an average roughness (Rz) of 10 points is 1.2 &mgr;m≦Rz≦3.0 m, an arithmetic average roughness (Ra) is 0.15 &mgr;m≦Ra≦0.5 &mgr;m, and an irregularity average interval (Sm) is 30 &mgr;m≦Sm≦80 &mgr;m. The photosensitive member's charge generation layer contains a phthalocyanine compound, its charge transport layer has a thickness which is at least 9 &mgr;m but not larger than 18 &mgr;m, the electrophotographic photosensitive member in every 1 cm2 area has an electrostatic capacity (C) of 130 pF or more. This invention also provides a process cartridge and an electrophotographic apparatus containing the electrophotographic photosensitive member.Type: GrantFiled: September 26, 2001Date of Patent: April 1, 2003Assignee: Canon Kabushiki KaishaInventors: Hideaki Nagasaka, Kazushige Nakamura, Noriyuki Takagi
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Publication number: 20020090561Abstract: The present invention provides an electrophotographic photosensitive member wherein a maximum height (RmaxD) of a surface roughness of a support portion is 1.2 &mgr;m≦RmaxD≦5.0 &mgr;m, an average roughness (Rz) of 10 points is 1.2 &mgr;m≦Rz≦3.0 m, an arithmetic average roughness (Ra) is 0.15 &mgr;m≦Ra≦0.5 &mgr;m, and an irregularity average interval (Sm) is 30 &mgr;m<Sm≦80 &mgr;m. The photosensitive member's charge generation layer contains a phthalocyanine compound, its charge transport layer has a thickness which is at least 9 &mgr;m but not larger than 18 &mgr;m, the electrophotographic photosensitive member in every 1 cm2 area has an electrostatic capacity (C) of 130 pF or more. This invention also provides a process cartridge and an electrophotographic apparatus containing the electrophotographic photosensitive member.Type: ApplicationFiled: September 26, 2001Publication date: July 11, 2002Inventors: Hideaki Nagasaka, Kazushige Nakamura, Noriyuki Takagi
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Publication number: 20020066443Abstract: Electromagnetic coil parts 25 and wiring 26 for connection to the electromagnetic coil parts 25 are installed inside injector electric block body 20 in which injector main body housing holes 21h are made in accordance with injector mounting holes Eh of the engine body E side, and injector main bodies 30 having valve parts 35 are inserted into the injector main body housing holes 21h, whereby the valve parts 35 are driven to open and close by means of exciting and non-exciting operation of the electromagnetic coil parts 25. Further, an ignition coil device module is provided with ignition coil devices 102 provided corresponding to a plurality of combustion chambers of an engine, respectively, wherein connection surface base portions at which connecting terminals are exposed are provided on one-side surface of each ignition coil device 102.Type: ApplicationFiled: November 28, 2001Publication date: June 6, 2002Applicant: Autonetworks Technologies, Ltd.Inventors: Kazushige Nakamura, Isao Isshiki, Takao Nozaki, Fumiyoshi Tanigawa
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Publication number: 20020064721Abstract: An electrophotographic photosensitive member is comprised of a support and a charge generation layer and a charge transport layer provided on the support in this order.Type: ApplicationFiled: September 26, 2001Publication date: May 30, 2002Inventors: Shuji Ishii, Kazushige Nakamura, Noriyuki Takagi
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Patent number: 6016414Abstract: An electrophotographic photosensitive member comprising a conductive support, a photosensitive layer and a protective layer containing a setting resin, characterized in that the photosensitive layer contains a resin which has a glass transition point of 170.degree. C. or more. The above image forming apparatus has excellent durability and good image forming properties.Type: GrantFiled: December 5, 1995Date of Patent: January 18, 2000Assignee: Canon Kabushiki KaishaInventors: Hideki Anayama, Akio Maruyama, Kazushige Nakamura
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Patent number: 6004710Abstract: An electrophotographic photosensitive member is formed by disposing a photosensitive layer and a protective layer in this order on a support. The protective layer comprises an applied and cured product of the following solution (A) or (B); (A) a solution comprising a curable resin component and a polymerization initiator having a polymeric recurring structure, or (B) a solution comprising a curable resin component, a polymerization initiator free from a polymeric recurring structure and a polymerization initiator aid having a polymeric recurring structure. Because of the polymerization initiator or polymerization initiator aid having a polymeric recurring structure used for constituting the protective layer, the resultant photosensitive member can exhibit improved durability as well as good electrophotographic performances.Type: GrantFiled: February 9, 1998Date of Patent: December 21, 1999Assignee: Canon Kabushiki KaishaInventors: Noriyuki Takagi, Noboru Kashimura, Kazushige Nakamura
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Patent number: 5932383Abstract: An electrophotographic photosensitive member is constituted by a support and a photosensitive layer disposed on the support. The photosensitive layer includes a fluorene compound represented by a formula (1) and a stilbene compound represented by a formula (4). The compounds of the formulas (1) and and (4) may preferably be used as a charge transport material. The combination of such compounds is effective in improving resistances to abrasion, crack and crystallization of the resultant photosensitive layer.Type: GrantFiled: August 7, 1997Date of Patent: August 3, 1999Assignee: Canon Kabushiki KaishaInventors: Kouichi Nakata, Toshihiro Kikuchi, Koichi Suzuki, Kazushige Nakamura, Tetsuro Kanemaru
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Patent number: 5923925Abstract: An electrophotographic apparatus has an electrophotographic photosensitive member having a photosensitive layer on an electroconductive support, a charging means provided in contact with the photosensitive member, and image exposure means, a development means, and an image transfer means. The electrophotographic photosensitive member has a surface layer containing electroconductive particles having particle surface treated with a fluorine-containing compound, and a binder resin.Type: GrantFiled: April 30, 1997Date of Patent: July 13, 1999Assignee: Canon Kabushiki KaishaInventors: Kazushige Nakamura, Akio Maruyama, Noboru Kashimura, Shoji Amamiya
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Patent number: 5837412Abstract: An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a hindered phenol compound and a fluorene compound represented by the following formula (1): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently substituted or unsubstituted aryl, and R.sub.5 and R.sub.6 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl.Type: GrantFiled: August 7, 1997Date of Patent: November 17, 1998Assignee: Canon Kabushiki KaishaInventors: Koichi Suzuki, Toshihiro Kikuchi, Kazushige Nakamura, Tetsuro Kanemaru, Kouichi Nakata
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Patent number: 5729801Abstract: An electrophotographic apparatus which comprises an electrophotographic photosensitive member, a charging member provided in contact therewith for charging the electrophotographic photosensitive member by being applied with a voltage, a light exposure device, a developing device, and a transfer device, wherein the electrophotographic photosensitive member has a surface layer containing an organic compound having a reduction potential of 0.5 V or lower, and the charging is injection charging.Type: GrantFiled: August 30, 1996Date of Patent: March 17, 1998Assignee: Canon Kabushiki KaishaInventors: Akio Maruyama, Noboru Kashimura, Toshihiro Kikuchi, Kazushige Nakamura, Shoji Amamiya, Hiroyuki Tanaka
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Patent number: 5708932Abstract: This invention relates to a charging system for charging a body to be electrified, comprising a body to be electrified, and a charging member which can be applied with voltage to brush the surface of said body to be electrified and charge it. Wherein the surface of the body to be electrified exhibits a contact angle of 90.degree. or more for water.Type: GrantFiled: January 7, 1997Date of Patent: January 13, 1998Assignee: Canon Kabushiki KaishaInventors: Hideyuki Yano, Akio Maruyama, Yomishi Toshida, Noboru Kashimura, Kazushige Nakamura, Shoji Amamiya, Harumi Ishiyama, Tadashi Furuya
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Patent number: 5693443Abstract: The present invention relates to an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus. The electrophotographic photosensitive member includes a support, a photosensitive layer provided on the support, and a surface layer provided on the photosensitive layer. The surface layer includes tantalum-doped tin oxide particles and a resin.Type: GrantFiled: November 19, 1996Date of Patent: December 2, 1997Assignee: Canon Kabushiki KaishaInventors: Kazushige Nakamura, Akio Maruyama, Noriyuki Takagi, Michiyo Sekiya