Toshitaka Yamaguchi

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus
- Patent number 9,720,355
- Issue date Aug 1, 2017
- Ricoh Company, Ltd.
- Tatsuya Ohsugi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus controlling transfer bias based on temperat...
- Patent number 9,632,461
- Issue date Apr 25, 2017
- Ricoh Company, Ltd.
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 9,459,564
- Issue date Oct 4, 2016
- Ricoh Company, Ltd.
- Tatsuya Ohsugi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 8,270,875
- Issue date Sep 18, 2012
- Ricoh Company, Ltd.
- Junpei Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer device and image forming apparatus having first and second...
- Patent number 8,175,479
- Issue date May 8, 2012
- Ricoh Company, Ltd.
- Kazuchika Saeki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Transfer device and image forming apparatus including same
- Patent number 8,086,155
- Issue date Dec 27, 2011
- Ricoh Company, Limited
- Toshitaka Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer device and image forming apparatus having at least two con...
- Patent number 7,929,877
- Issue date Apr 19, 2011
- Ricoh Company, Ltd.
- Kazuchika Saeki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Belt detaching device and image forming apparatus including belt de...
- Patent number 7,813,683
- Issue date Oct 12, 2010
- Ricoh Company, Ltd.
- Masaharu Furuya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Compact image forming apparatus with a moveable optical sensor
- Patent number 7,657,196
- Issue date Feb 2, 2010
- Ricoh Company, Limited
- Toshitaka Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image-forming apparatus having a seal for a developer and a method...
- Patent number 6,266,501
- Issue date Jul 24, 2001
- Ricoh Company, Ltd.
- Haruji Mizuishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with improved toner density control
- Patent number 6,148,161
- Issue date Nov 14, 2000
- Ricoh Company, Ltd.
- Noriyuki Usui
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having detachable transfer roller and disch...
- Patent number 6,144,822
- Issue date Nov 7, 2000
- Ricoh Company, Ltd.
- Toshitaka Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and method for obtaining appropriate toner...
- Patent number 6,055,388
- Issue date Apr 25, 2000
- Ricoh Company, Ltd.
- Shigeru Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus for controlling amount of suppli...
- Patent number 6,006,050
- Issue date Dec 21, 1999
- Ricoh Company, Ltd.
- Shigeru Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with a folding transfer device support member
- Patent number 5,923,935
- Issue date Jul 13, 1999
- Ricoh Company, Ltd.
- Toshitaka Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and method for automatically adjusting tone...
- Patent number 5,915,143
- Issue date Jun 22, 1999
- Ricoh Company, Ltd.
- Shigeru Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming device with improved mixing of circulated developer w...
- Patent number 5,887,224
- Issue date Mar 23, 1999
- Ricoh Company, Ltd.
- Haruji Mizuishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 5,815,767
- Issue date Sep 29, 1998
- Ricoh Company, Ltd.
- Akio Kutsuwada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus for moving a charging roller towards and aw...
- Patent number 5,697,020
- Issue date Dec 9, 1997
- Ricoh Company, Ltd.
- Mitsuru Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 5,678,125
- Issue date Oct 14, 1997
- Ricoh Company, Ltd.
- Akio Kutsuwada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner recovery system which detects linear movement of a recovered...
- Patent number 5,400,127
- Issue date Mar 21, 1995
- Ricoh Company, Ltd.
- Makoto Arai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device for an image forming apparatus
- Patent number 5,396,319
- Issue date Mar 7, 1995
- Ricoh Company, Ltd.
- Masaki Tokuhashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20170003630
- Publication date Jan 5, 2017
- Tatsuya OHSUGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20160161887
- Publication date Jun 9, 2016
- Kenji SUGIURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20160109832
- Publication date Apr 21, 2016
- Tatsuya OHSUGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20110150540
- Publication date Jun 23, 2011
- Kazuchika SAEKI
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20100067952
- Publication date Mar 18, 2010
- Junpei FUJITA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
- Publication number 20090003864
- Publication date Jan 1, 2009
- Toshitaka YAMAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080187343
- Publication date Aug 7, 2008
- Toshitaka YAMAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080118281
- Publication date May 22, 2008
- Kazuchika SAEKI
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
BELT DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080112734
- Publication date May 15, 2008
- Masaharu FURUYA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Toshitaka Yamaguchi

Person

Patents Grantslast 30 patents

Image forming apparatus

Image forming apparatus controlling transfer bias based on temperat...

Image forming apparatus

Image forming apparatus

Transfer device and image forming apparatus having first and second...

Transfer device and image forming apparatus including same

Transfer device and image forming apparatus having at least two con...

Belt detaching device and image forming apparatus including belt de...

Compact image forming apparatus with a moveable optical sensor

Image-forming apparatus having a seal for a developer and a method...

Image forming apparatus with improved toner density control

Image forming apparatus having detachable transfer roller and disch...

Image forming apparatus and method for obtaining appropriate toner...

Image forming method and apparatus for controlling amount of suppli...

Image forming apparatus with a folding transfer device support member

Image forming apparatus and method for automatically adjusting tone...

Image forming device with improved mixing of circulated developer w...

Image forming apparatus

Image forming apparatus for moving a charging roller towards and aw...

Image forming apparatus

Toner recovery system which detects linear movement of a recovered...

Cleaning device for an image forming apparatus

Patents Applicationslast 30 patents

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

TRANSFER DEVICE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME

IMAGE FORMING APPARATUS

TRANSFER DEVICE AND IMAGE FORMING APPARATUS

BELT DEVICE AND IMAGE FORMING APPARATUS