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Noboru Miyagawa patents

Recent patents with Noboru Miyagawa listed as an inventor - additional entries may be under other spellings.


Noboru Miyagawa - Related organizations: Canon Kabushiki Kaisha patents

Roller for electrophotography, process cartridge, and image-forming apparatus

10/06/16 - 20160291497 - A roller for electrophotography including a mandrel and an elastic layer on the mandrel is provided. The elastic layer contains a hollow particle in a region from the surface of the elastic layer to a depth of 100 μm. A cross-section of the hollow particle intersected by a first plane
Inventors: Masahiro Watanabe, Tomohito Taniguchi, Noboru Miyagawa, Taichi Sato, Takehiko Aoyama, Takeshi Yoshidome, Atsushi Uematsu

Electrophotographic member, method for producing same, process cartridge and electrophotographic apparatus

10/06/16 - 20160291487 - The electrophotographic member includes an electro-conductive substrate and an electro-conductive resin layer as the surface layer on the substrate. The electro-conductive resin layer contains a binder and a bowl-shaped resin particle; the surface of electrophotographic member has a concavity derived from the opening of the bowl-shaped resin particle, a protrusion
Inventors: Atsushi Uematsu, Tomohito Taniguchi, Masahiro Watanabe, Noboru Miyagawa, Taichi Sato, Takehiko Aoyama, Takeshi Yoshidome

Charging member, process cartridge, and electrophotographic apparatus

03/03/16 - 20160062259 - A charging member includes an electro-conductive substrate and an electro-conductive resin layer. The electro-conductive resin layer contains a binder, a plurality of bowl-shaped resin particles, and a plurality of hollow particles. The charging member has a surface having recesses due to openings of the bowl-shaped resin particles and protrusions due
Inventors: Noboru Miyagawa, Tomohito Taniguchi, Masahiro Watanabe, Taichi Sato, Takehiko Aoyama, Atsushi Uematsu

Electrophotographic image forming apparatus

10/01/15 - 20150277244 - Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer having a matrix-domain structure including specific resins. The charging member comprises an electro-conductive substrate, and an electro-conductive elastic layer. The electro-conductive elastic
Inventors: Taichi Sato, Tomohito Taniguchi, Noboru Miyagawa, Takehiko Aoyama, Atsushi Uematsu, Masahiro Watanabe, Yuki Yamamoto, Harunobu Ogaki, Akihiro Maruyama, Takashi Anezaki, Daisuke Miura, Hirofumi Kumoi

Image forming apparatus and process cartridge

01/01/15 - 20150003874 - diffusion index≧−0.0042×X1+0.62  (formula 2)
Inventors: Takehiko Aoyama, Tomohito Taniguchi, Noboru Miyagawa, Taichi Sato, Atsushi Uematsu, Masahiro Watanabe, Yoshitaka Suzumura

Image-forming apparatus and process cartridge

01/01/15 - 20150003872 - diffusion index≧−0.0042×X1+0.62  (formula 2)
Inventors: Tomohito Taniguchi, Takehiko Aoyama, Taichi Sato, Noboru Miyagawa, Masahiro Watanabe, Atsushi Uematsu, Yoshitaka Suzumura

Charging member, process cartridge and electrophotographic apparatus

10/16/14 - 20140308607 - The present invention relates to a charging member. The charging member comprises an electro-conductive substrate and an electro-conductive surface layer, wherein the surface layer includes a binder resin, an electro-conductive particle dispersed in the binder resin, and a resin particle that roughens the surface of the surface layer; the surface
Inventors: Tomohito Taniguchi, Takehiko Aoyama, Taichi Sato, Noboru Miyagawa, Satoshi Koide, Daisuke Tanaka

Roller member for electrophotography, process cartridge and electrophotographic apparatus

10/09/14 - 20140301754 - The roller member has a substrate and an electroconductive elastic layer. The elastic layer has a crown shape of which an outer diameter at the middle in the lengthwise direction is larger than those at its both ends. The elastic layer includes a bowl-shaped resin particle. The surface of the
Inventors: Atsushi Uematsu, Noboru Miyagawa, Taichi Sato

Electrophotographic process cartridge and electrophotographic apparatus

10/02/14 - 20140295336 - Uneven charging is improved, and production of a banding image attributed to a slip between the charging member and the electrophotographic photosensitive member is suppressed. An electrophotographic process cartridge including a charging member and an electrophotographic photosensitive member which is electrically charged upon being brought into contact with the charging
Inventors: Noboru Miyagawa, Satoshi Koide, Takehiko Aoyama, Daisuke Tanaka

Charging member, process cartridge, and electrophotographic image forming apparatus

09/18/14 - 20140274628 - The charging member comprises an electroconductive support and an electroconductive surface layer, the surface layer comprising at least one of the compounds respectively represented by formula (1), formula (3), and formula (4) defined in the specification, a binder resin, and a conducting agent. The process cartridge and the electrophotographic apparatus
Inventors: Hidekazu Matsuda, Noboru Miyagawa

Charging member, process cartridge, and electrophotographic image forming apparatus

08/07/14 - 20140221183 - In order to maintain the image quality of a recent high-speed electrophotographic apparatus, a charging member is provided which hardly causes charging unevenness of a photosensitive member even when vibration of the photosensitive member occurs. The charging member includes an electro-conductive support, an electro-conductive elastic layer, and a surface layer.
Inventors: Noboru Miyagawa, Hidekazu Matsuda

Charging member, process cartridge, and electrophotographic apparatus

09/26/13 - 20130251403 - The charging member includes: an electrically conductive support; and an electrically conductive surface layer, in which the surface layer includes a first polyrotaxane and a second polyrotaxane; the first polyrotaxane has a structure in which a first straight-chain molecule passes through an inside of a ring of a first cyclic
Inventors: Hidekazu Matsuda, Noboru Miyagawa, Satoshi Koide

Electro-conductive member, process cartridge, and electrophotographic apparatus

09/12/13 - 20130236214 - Provided is an electro-conductive member in which a C set hardly occurs. The electro-conductive member is an electro-conductive member including an electro-conductive substrate and a porous rubber elastic layer, in which the porous rubber elastic layer includes closed cells including particles, and the particles are not fixed to inner walls
Inventors: Satoshi Koide, Hidekazu Matsuda, Noboru Miyagawa

Charging member, electrophotographic process cartridge, and electrophotographic apparatus

08/29/13 - 20130223886 - The present invention aims to achieve compatibility between high conductivity and durability against the application of a DC voltage in the charging member of an electrophotographic apparatus for maintaining the image quality of the electrophotographic apparatus in association with an increase in speed of the electrophotographic apparatus and more severe
Inventors: Noboru Miyagawa, Hidekazu Matsuda, Satoshi Koide


### Noboru Miyagawa patent invention listings

The bibliographic references displayed about Noboru Miyagawa's patents are for a recent sample of Noboru Miyagawa's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Noboru Miyagawa filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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