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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Belt device, belt regulator, roller unit, and image forming apparatus
Patent number
11,112,734
Issue date
Sep 7, 2021
Ricoh Company, Ltd.
Naohiro Kumagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Belt control device and image forming apparatus incorporating same
Patent number
10,955,771
Issue date
Mar 23, 2021
Ricoh Company, Ltd.
Naohiro Kumagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
10,281,848
Issue date
May 7, 2019
Ricoh Company, Ltd.
Yuuji Wada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method for controlling a...
Patent number
10,185,255
Issue date
Jan 22, 2019
Ricoh Company, Ltd.
Naoto Kochi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer belt device and image forming apparatus including the same
Patent number
9,042,779
Issue date
May 26, 2015
Ricoh Company, Ltd.
Seiichi Kogure
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a movably supported transfer belt de...
Patent number
8,467,709
Issue date
Jun 18, 2013
Ricoh Company, Limited
Seiichi Kogure
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device and image forming apparatus including same
Patent number
8,457,536
Issue date
Jun 4, 2013
Ricoh Company, Ltd.
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit for an electrophotographic image forming apparatus ha...
Patent number
8,326,174
Issue date
Dec 4, 2012
Ricoh Company, Limited
Osamu Naruse
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device and image forming apparatus
Patent number
8,190,077
Issue date
May 29, 2012
Ricoh Company, Ltd.
Osamu Naruse
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polarity controlling device, and cleaner and image forming apparatu...
Patent number
8,019,268
Issue date
Sep 13, 2011
Ricoh Company Limited
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device, image forming apparatus, and process cartridge
Patent number
7,903,995
Issue date
Mar 8, 2011
Ricoh Company, Ltd.
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, image carrier unit including same, and image forming...
Patent number
7,817,954
Issue date
Oct 19, 2010
Ricoh Company Limited
Hidetoshi Yano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
BELT DEVICE, BELT REGULATOR, ROLLER UNIT, AND IMAGE FORMING APPARATUS
Publication number
20200301322
Publication date
Sep 24, 2020
Ricoh Company, Ltd.
Naohiro KUMAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
BELT CONTROL DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20200301321
Publication date
Sep 24, 2020
Ricoh Company, Ltd.
Naohiro KUMAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20170235257
Publication date
Aug 17, 2017
Naoto KOCHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20170235258
Publication date
Aug 17, 2017
Yuuji WADA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20130216260
Publication date
Aug 22, 2013
Seiichi KOGURE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20110211855
Publication date
Sep 1, 2011
Seiichi KOGURE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Transfer device and image forming apparatus including same
Publication number
20110058859
Publication date
Mar 10, 2011
Ricoh Company, Ltd.
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, and electrophotographic image for...
Publication number
20100239302
Publication date
Sep 23, 2010
Ricoh Company, Ltd.
Osamu Naruse
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POLARITY CONTROLLING DEVICE, AND CLEANER AND IMAGE FORMING APPARATU...
Publication number
20100034549
Publication date
Feb 11, 2010
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE AND IMAGE FORMING APPARATUS
Publication number
20100008706
Publication date
Jan 14, 2010
Kenji Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Publication number
20100003052
Publication date
Jan 7, 2010
Hiroki Nakamatsu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE AND IMAGE FORMING APPARATUS
Publication number
20090311004
Publication date
Dec 17, 2009
Osamu Naruse
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING UNIT, IMAGE CARRIER UNIT INCLUDING SAME, AND IMAGE FORMING...
Publication number
20090092428
Publication date
Apr 9, 2009
Hidetoshi YANO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE, IMAGE CARRIER UNIT, AND IMAGE FORMING APPARATUS
Publication number
20090035038
Publication date
Feb 5, 2009
Naomi Sugimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY