Yuji NAGATOMO

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device, and image forming apparatus and process unit inc...
- Patent number 10,036,976
- Issue date Jul 31, 2018
- Ricoh Company, Ltd.
- Yuji Nagatomo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus incorporating same
- Patent number 9,958,806
- Issue date May 1, 2018
- Ricoh Company, Ltd.
- Masato Tsuji
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus that utilizes toner roller bias voltages fo...
- Patent number 9,551,956
- Issue date Jan 24, 2017
- Ricoh Company, Ltd.
- Kyoko Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Seal, cleaning unit with seal, transfer unit with seal, developing...
- Patent number 9,335,663
- Issue date May 10, 2016
- Ricoh Company, Ltd.
- Kyoko Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Reducing toner adhesion to a development device of an image forming...
- Patent number 9,116,460
- Issue date Aug 25, 2015
- Ricoh Company, Ltd.
- Yasuhide Matsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color image forming apparatus with a line velocity difference set b...
- Patent number 8,983,323
- Issue date Mar 17, 2015
- Ricoh Company, Limited
- Takeshi Yamashita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a controller configured to regula...
- Patent number 8,977,150
- Issue date Mar 10, 2015
- Ricoh Company, Ltd.
- Shin Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and image forming method
- Patent number 8,971,743
- Issue date Mar 3, 2015
- Ricoh Company, Ltd.
- Takafumi Miyazaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer regulator, development device, and image forming apparatu...
- Patent number 8,867,971
- Issue date Oct 21, 2014
- Ricoh Company, Ltd.
- Ryuji Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image developing device, process cartridge including image developi...
- Patent number 8,805,222
- Issue date Aug 12, 2014
- Ricoh Company, Ltd.
- Naoki Nakatake
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus, image forming method, and developing device
- Patent number 8,406,664
- Issue date Mar 26, 2013
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Semiconductive member, and developing roll, charging roll, transfer...
- Patent number 8,354,164
- Issue date Jan 15, 2013
- Ricoh Company, Limited
- Chiyoshi Nozaki
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming apparatus
- Patent number 7,907,871
- Issue date Mar 15, 2011
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,903,993
- Issue date Mar 8, 2011
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,822,356
- Issue date Oct 26, 2010
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus including same
- Patent number 7,796,935
- Issue date Sep 14, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus which uses alternating voltage t...
- Patent number 7,796,912
- Issue date Sep 14, 2010
- Ricoh Company Limited
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a brush member to temporarily cap...
- Patent number 7,792,463
- Issue date Sep 7, 2010
- Ricoh Company, Limited
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleanerless image forming apparatus
- Patent number 7,751,753
- Issue date Jul 6, 2010
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus for effectively charging an imag...
- Patent number 7,738,803
- Issue date Jun 15, 2010
- Ricoh Company Limited
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image-forming apparatus using multiple-compon...
- Patent number 7,734,227
- Issue date Jun 8, 2010
- Konica Minolta Business Technologies, Inc.
- Shigeo Uetake
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrifying apparatus, a processing unit, and an image formation a...
- Patent number 7,725,054
- Issue date May 25, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device for charging a surface of a latent image bearing me...
- Patent number 7,693,459
- Issue date Apr 6, 2010
- Ricoh Company Limited
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process unit and image forming apparatus including the same
- Patent number 7,684,732
- Issue date Mar 23, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus
- Patent number 7,676,184
- Issue date Mar 9, 2010
- Ricoh Company, Ltd.
- Shin Murayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning of a charging member in an image forming apparatus
- Patent number 7,664,433
- Issue date Feb 16, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging unit, process unit including the same, and image forming a...
- Patent number 7,539,442
- Issue date May 26, 2009
- Ricoh Company, Ltd.
- Yuji Nagatomo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,233,755
- Issue date Jun 19, 2007
- Konica Minolta Business Technologies, Inc.
- Makiko Tango
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device and method for measuring toner current
- Patent number 7,202,675
- Issue date Apr 10, 2007
- Konica Minolta Holdings, Inc.
- Shigeo Uetake
- G01 - MEASURING TESTING
Information Patent Grant
Contact charger and image forming apparatus
- Patent number 7,082,277
- Issue date Jul 25, 2006
- Konica Minolta Business Technologies, Inc.
- Yuji Nagatomo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT IN...
- Publication number 20170176886
- Publication date Jun 22, 2017
- RICOH COMPANY, LTD.
- Yuji NAGATOMO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20170146925
- Publication date May 25, 2017
- Masato TSUJI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20160209774
- Publication date Jul 21, 2016
- RICOH COMPANY, LTD.
- Kyoko Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SEAL, CLEANING UNIT WITH SEAL, TRANSFER UNIT WITH SEAL, DEVELOPING...
- Publication number 20150192882
- Publication date Jul 9, 2015
- RICOH COMPANY, LTD.
- Kyoko Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20140161471
- Publication date Jun 12, 2014
- RICOH COMPANY, LTD.
- Yasuhide Matsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
- Publication number 20130266332
- Publication date Oct 10, 2013
- Takafumi MIYAZAKI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT IN...
- Publication number 20130236217
- Publication date Sep 12, 2013
- Yuji NAGATOMO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
COLOR IMAGE FORMING APPARATUS
- Publication number 20130195487
- Publication date Aug 1, 2013
- Takeshi YAMASHITA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20130142530
- Publication date Jun 6, 2013
- Shin YAMAMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE DEVELOPING DEVICE, PROCESS CARTRIDGE INCLUDING IMAGE DEVELOPI...
- Publication number 20130058670
- Publication date Mar 7, 2013
- Naoki Nakatake
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER REGULATOR, DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATU...
- Publication number 20120045254
- Publication date Feb 23, 2012
- Ryuji INOUE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SEMICONDUCTIVE MEMBER, AND DEVELOPING ROLL, CHARGING ROLL, TRANSFER...
- Publication number 20100150609
- Publication date Jun 17, 2010
- Chiyoshi Nozaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND DEVELOPING DEVICE
- Publication number 20090067887
- Publication date Mar 12, 2009
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING SAME
- Publication number 20090028606
- Publication date Jan 29, 2009
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080273898
- Publication date Nov 6, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080232875
- Publication date Sep 25, 2008
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND PROCESS CARTRIDGE
- Publication number 20080227001
- Publication date Sep 18, 2008
- Takuya KADOTA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080187360
- Publication date Aug 7, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND APPARATUS
- Publication number 20080187361
- Publication date Aug 7, 2008
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080181655
- Publication date Jul 31, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080181654
- Publication date Jul 31, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTRIFYING APPARATUS, A PROCESSING UNIT, AND AN IMAGE FORMATION A...
- Publication number 20080152384
- Publication date Jun 26, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME
- Publication number 20080152385
- Publication date Jun 26, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANERLESS IMAGE FORMING APPARATUS
- Publication number 20080145100
- Publication date Jun 19, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING APPARATUS
- Publication number 20080145109
- Publication date Jun 19, 2008
- Shin MURAYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE CHARGING DEVICE
- Publication number 20080069592
- Publication date Mar 20, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND APPARATUS FOR EFFECTIVELY CHARGING AN IMAG...
- Publication number 20080056745
- Publication date Mar 6, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
METHOD AND APPARATUS FOR IMAGE FORMING FOR EFFECTIVELY CHARGING AN...
- Publication number 20080038017
- Publication date Feb 14, 2008
- Tetsumaru FUJITA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING UNIT, PROCESS UNIT INCLUDING THE SAME, AND IMAGE FORMING A...
- Publication number 20070280735
- Publication date Dec 6, 2007
- Yuji Nagatomo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device and image-forming apparatus
- Publication number 20070071506
- Publication date Mar 29, 2007
- Shigeo Uetake
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yuji NAGATOMO

Person

Patents Grantslast 30 patents

Developing device, and image forming apparatus and process unit inc...

Developing device and image forming apparatus incorporating same

Image forming apparatus that utilizes toner roller bias voltages fo...

Seal, cleaning unit with seal, transfer unit with seal, developing...

Reducing toner adhesion to a development device of an image forming...

Color image forming apparatus with a line velocity difference set b...

Image forming apparatus including a controller configured to regula...

Image forming apparatus and image forming method

Developer regulator, development device, and image forming apparatu...

Image developing device, process cartridge including image developi...

Image forming apparatus, image forming method, and developing device

Semiconductive member, and developing roll, charging roll, transfer...

Image forming apparatus

Image forming apparatus

Image forming apparatus

Process cartridge and image forming apparatus including same

Image forming method and apparatus which uses alternating voltage t...

Image forming apparatus including a brush member to temporarily cap...

Cleanerless image forming apparatus

Image forming method and apparatus for effectively charging an imag...

Developing device and image-forming apparatus using multiple-compon...

Electrifying apparatus, a processing unit, and an image formation a...

Charging device for charging a surface of a latent image bearing me...

Process unit and image forming apparatus including the same

Developing apparatus

Cleaning of a charging member in an image forming apparatus

Charging unit, process unit including the same, and image forming a...

Image forming apparatus

Device and method for measuring toner current

Contact charger and image forming apparatus

Patents Applicationslast 30 patents

DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT IN...

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

IMAGE FORMING APPARATUS

SEAL, CLEANING UNIT WITH SEAL, TRANSFER UNIT WITH SEAL, DEVELOPING...

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT IN...

COLOR IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE DEVELOPING DEVICE, PROCESS CARTRIDGE INCLUDING IMAGE DEVELOPI...

DEVELOPER REGULATOR, DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATU...

SEMICONDUCTIVE MEMBER, AND DEVELOPING ROLL, CHARGING ROLL, TRANSFER...

IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND DEVELOPING DEVICE

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING SAME

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING METHOD AND PROCESS CARTRIDGE

IMAGE FORMING APPARATUS

IMAGE FORMING METHOD AND APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

ELECTRIFYING APPARATUS, A PROCESSING UNIT, AND AN IMAGE FORMATION A...

PROCESS UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME

CLEANERLESS IMAGE FORMING APPARATUS

DEVELOPING APPARATUS

CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE CHARGING DEVICE

IMAGE FORMING METHOD AND APPARATUS FOR EFFECTIVELY CHARGING AN IMAG...

METHOD AND APPARATUS FOR IMAGE FORMING FOR EFFECTIVELY CHARGING AN...

CHARGING UNIT, PROCESS UNIT INCLUDING THE SAME, AND IMAGE FORMING A...

Developing device and image-forming apparatus