Hiroshi Saitoh

Person

Funabashi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus including a lubricant applying device confi...
- Patent number 8,577,274
- Issue date Nov 5, 2013
- Ricoh Company, Limited
- Takaaki Tawada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning member, charging device, process cartridge, and image form...
- Patent number 8,218,997
- Issue date Jul 10, 2012
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with improved separability of transfer mate...
- Patent number 7,769,310
- Issue date Aug 3, 2010
- Ricoh Company, Limited
- Hirokazu Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with improved separatability of transfer ma...
- Patent number 7,184,678
- Issue date Feb 27, 2007
- Ricoh Company, Limited
- Hirokazu Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 6,961,535
- Issue date Nov 1, 2005
- Ricoh Company, Ltd.
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device and image forming apparatus using the same
- Patent number 6,895,209
- Issue date May 17, 2005
- Ricoh Company, Ltd.
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 6,813,467
- Issue date Nov 2, 2004
- Ricoh Company, Ltd.
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with accurate image formation
- Patent number 6,700,595
- Issue date Mar 2, 2004
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Toner recycling device and method, and image forming apparatus and...
- Patent number 6,532,355
- Issue date Mar 11, 2003
- Ricoh Company, Ltd.
- Hiroshi Saitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image transferring device and image forming apparatus including the...
- Patent number 6,430,383
- Issue date Aug 6, 2002
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer device and image formation apparatus
- Patent number 6,421,511
- Issue date Jul 16, 2002
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with fixing unit falling off preventing device
- Patent number 6,314,256
- Issue date Nov 6, 2001
- Ricoh Company, Ltd.
- Hiroshi Saitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for supporting an image carrier included in an image forming...
- Patent number 6,249,661
- Issue date Jun 19, 2001
- Ricoh Company, Ltd.
- Hiroshi Saitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having recycling of residual toner
- Patent number 6,112,046
- Issue date Aug 29, 2000
- Ricoh Company, Ltd.
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 6,033,818
- Issue date Mar 7, 2000
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge including toner outlet openings and toner collectio...
- Patent number 5,995,789
- Issue date Nov 30, 1999
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of coating a toner conveyor roller
- Patent number 5,879,752
- Issue date Mar 9, 1999
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaner and toner magazine for electrophotographic apparatus
- Patent number 5,873,021
- Issue date Feb 16, 1999
- Ricoh Company, Ltd.
- Hirotaka Hatta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,845,183
- Issue date Dec 1, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an electrophotographic recording apparatus in...
- Patent number 5,826,144
- Issue date Oct 20, 1998
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with bias control to prevent undesirable to...
- Patent number 5,768,665
- Issue date Jun 16, 1998
- Ricoh Company, Ltd.
- Tetsuo Yamanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus and toner cartridg...
- Patent number 5,734,952
- Issue date Mar 31, 1998
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,708,942
- Issue date Jan 13, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having the lengths of two toner transporting roll...
- Patent number 5,697,026
- Issue date Dec 9, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaner and toner magazine for electrophotographic apparatus
- Patent number 5,697,038
- Issue date Dec 9, 1997
- Ricoh Company, Ltd.
- Hirotaka Hatta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus for electronic photographic recording equipmen...
- Patent number 5,689,782
- Issue date Nov 18, 1997
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for electrostatically developing a latent image on an image...
- Patent number 5,666,625
- Issue date Sep 9, 1997
- Ricoh Company, Ltd.
- Satoru Komatsubara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image recording apparatus having a toner supply tank and a toner re...
- Patent number RE35528
- Issue date Jun 10, 1997
- Ricoh Company, Ltd.
- Yozo Matsuura
- 399 - Electrophotography
Information Patent Grant
Toner, and devices for electrostatically depositing a uniform appli...
- Patent number 5,625,438
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having seals between a toner transport roller and...
- Patent number 5,625,440
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Image forming apparatus
- Publication number 20110206431
- Publication date Aug 25, 2011
- RICOH COMPANY, LIMITED
- Takaaki Tawada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Lubricant supplying device, process cartridge, and image forming ap...
- Publication number 20110170908
- Publication date Jul 14, 2011
- RICOH COMPANY, LIMITED
- Hiroshi Saitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE CONTROLLER FOR CONTROLLING CHARGING DEVICE, ELECTRO...
- Publication number 20100215388
- Publication date Aug 26, 2010
- Hiroshi SAITOH
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORM...
- Publication number 20090297206
- Publication date Dec 3, 2009
- Takatsugu FUJISHIRO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20070127941
- Publication date Jun 7, 2007
- Hirokazu Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20050180767
- Publication date Aug 18, 2005
- Hirokazu Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming device
- Publication number 20050162499
- Publication date Jul 28, 2005
- Toshihiro Sugiyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Image forming apparatus
- Publication number 20050078992
- Publication date Apr 14, 2005
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20030235424
- Publication date Dec 25, 2003
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Cleaning device and image forming apparatus using the same
- Publication number 20030219289
- Publication date Nov 27, 2003
- Shinichi Kawahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus with accurate image formation
- Publication number 20020135656
- Publication date Sep 26, 2002
- Toshihiro Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Toner recycling device and method, and image forming apparatus and...
- Publication number 20020067938
- Publication date Jun 6, 2002
- Hiroshi Saitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Transfer device and image formation apparatus
- Publication number 20010002956
- Publication date Jun 7, 2001
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hiroshi Saitoh

Person

Patents Grantslast 30 patents

Image forming apparatus including a lubricant applying device confi...

Cleaning member, charging device, process cartridge, and image form...

Image forming apparatus with improved separability of transfer mate...

Image forming apparatus with improved separatability of transfer ma...

Image forming apparatus

Cleaning device and image forming apparatus using the same

Image forming apparatus

Image forming apparatus with accurate image formation

Toner recycling device and method, and image forming apparatus and...

Image transferring device and image forming apparatus including the...

Transfer device and image formation apparatus

Image forming apparatus with fixing unit falling off preventing device

Device for supporting an image carrier included in an image forming...

Image forming apparatus having recycling of residual toner

Developing device for an image forming apparatus

Toner cartridge including toner outlet openings and toner collectio...

Method of coating a toner conveyor roller

Cleaner and toner magazine for electrophotographic apparatus

Developing device for an image forming apparatus

Developing device for an electrophotographic recording apparatus in...

Image forming apparatus with bias control to prevent undesirable to...

Developing device for an image forming apparatus and toner cartridg...

Developing device for an image forming apparatus

Developing device having the lengths of two toner transporting roll...

Cleaner and toner magazine for electrophotographic apparatus

Developing apparatus for electronic photographic recording equipmen...

Device for electrostatically developing a latent image on an image...

Image recording apparatus having a toner supply tank and a toner re...

Toner, and devices for electrostatically depositing a uniform appli...

Developing device having seals between a toner transport roller and...

Patents Applicationslast 30 patents

Image forming apparatus

Lubricant supplying device, process cartridge, and image forming ap...

CHARGING DEVICE CONTROLLER FOR CONTROLLING CHARGING DEVICE, ELECTRO...

CLEANING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORM...

IMAGE FORMING APPARATUS

Image forming apparatus

Image forming device

Image forming apparatus

Image forming apparatus

Cleaning device and image forming apparatus using the same

Image forming apparatus with accurate image formation

Toner recycling device and method, and image forming apparatus and...

Transfer device and image formation apparatus