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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus for controlling glossiness of an image
Patent number
8,180,270
Issue date
May 15, 2012
Ricoh Company, Ltd.
Kei Yasutomi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, process cartridge, and image forming apparatus...
Patent number
7,925,188
Issue date
Apr 12, 2011
Ricoh Company Limited
Tetsuya Senoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device and image forming apparatus
Patent number
7,672,605
Issue date
Mar 2, 2010
Ricoh Company, Limited
Shin Kayahara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Gloss providing sheet and image formation apparatus
Patent number
7,657,218
Issue date
Feb 2, 2010
Ricoh Company Ltd.
Hitoshi Maruyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of effectively perfo...
Patent number
7,630,659
Issue date
Dec 8, 2009
Ricoh Co., Ltd.
Takeshi Uchitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Conductive member, and charging roller, process cartridge and image...
Patent number
7,603,062
Issue date
Oct 13, 2009
Ricoh Company, Ltd.
Eiji Shimojo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging member, process cartridge including the same, and image fo...
Patent number
7,555,243
Issue date
Jun 30, 2009
Ricoh Company, Ltd.
Masahiko Satoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device, process cartridge and image forming apparatus
Patent number
7,493,075
Issue date
Feb 17, 2009
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge having a detachable u...
Patent number
7,430,377
Issue date
Sep 30, 2008
Ricoh Company, Limited
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge with a cleaner for re...
Patent number
7,400,844
Issue date
Jul 15, 2008
Ricoh Company Limited
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging apparatus, and toner and process cartridge used in the imag...
Patent number
7,386,257
Issue date
Jun 10, 2008
Ricoh Company, Ltd.
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a temporary toner holding device and...
Patent number
7,295,796
Issue date
Nov 13, 2007
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, process cartridge, and waste toner recover...
Patent number
7,292,817
Issue date
Nov 6, 2007
Ricoh Company, Limited
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit and image forming apparatus having multiple cleaning...
Patent number
7,272,354
Issue date
Sep 18, 2007
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,266,324
Issue date
Sep 4, 2007
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device for cleaning a surface of an image support body
Patent number
7,228,099
Issue date
Jun 5, 2007
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,218,877
Issue date
May 15, 2007
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, process cartridge, and waste toner recover...
Patent number
7,184,684
Issue date
Feb 27, 2007
Ricoh Company, Limited
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, image forming apparatus, and toner
Patent number
7,149,465
Issue date
Dec 12, 2006
Ricoh Company, Limited
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,139,504
Issue date
Nov 21, 2006
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of removing residual...
Patent number
7,130,564
Issue date
Oct 31, 2006
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge for use in the same
Patent number
7,110,699
Issue date
Sep 19, 2006
Ricoh Company, Ltd.
Hideo Yoshizawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, and image forming apparatus
Patent number
7,110,696
Issue date
Sep 19, 2006
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, and image forming apparatus
Patent number
7,085,528
Issue date
Aug 1, 2006
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, image forming apparatus, and toner
Patent number
7,065,316
Issue date
Jun 20, 2006
Ricoh Company, Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,062,194
Issue date
Jun 13, 2006
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging apparatus, and toner and process cartridge used in the imag...
Patent number
7,050,741
Issue date
May 23, 2006
Ricoh Company, Ltd.
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image carrier unit and image forming apparatus
Patent number
6,993,267
Issue date
Jan 31, 2006
Ricoh Company, Limited
Kimura Yoshiyuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge including flexible me...
Patent number
6,993,281
Issue date
Jan 31, 2006
Ricoh Company, Ltd.
Hideo Yoshizawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, process cartridge, and waste toner recover...
Patent number
6,975,830
Issue date
Dec 13, 2005
Ricoh Company, Limited
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20090003904
Publication date
Jan 1, 2009
Kei YASUTOMI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS...
Publication number
20080226311
Publication date
Sep 18, 2008
Tetsuya Senoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Gloss providing sheet and image formation apparatus
Publication number
20080056785
Publication date
Mar 6, 2008
Ricoh Company, Limited
Hitoshi Maruyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CHARGING MEMBER, PROCESS CARTRIDGE INCLUDING THE SAME, AND IMAGE FO...
Publication number
20080008499
Publication date
Jan 10, 2008
Masahiko Satoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS
Publication number
20070286628
Publication date
Dec 13, 2007
Shin KAYAHARA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND TONER
Publication number
20070154246
Publication date
Jul 5, 2007
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Conductive member, and charging roller, process cartridge and image...
Publication number
20070065178
Publication date
Mar 22, 2007
Eiji Shimojo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20070036595
Publication date
Feb 15, 2007
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20070014588
Publication date
Jan 18, 2007
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of effectively perfo...
Publication number
20060251438
Publication date
Nov 9, 2006
Takeshi Uchitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20060216085
Publication date
Sep 28, 2006
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Imaging apparatus, and toner and process cartridge used in the imag...
Publication number
20060177239
Publication date
Aug 10, 2006
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20060165431
Publication date
Jul 27, 2006
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge for use in the same
Publication number
20060029427
Publication date
Feb 9, 2006
Hideo Yoshizawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, process cartridge, and waste toner recover...
Publication number
20060024103
Publication date
Feb 2, 2006
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Lubricant for electrophotography, lubricant applying unit, process...
Publication number
20050164108
Publication date
Jul 28, 2005
Eisaku Murakami
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Image forming apparatus, process cartridge, and toner
Publication number
20050084271
Publication date
Apr 21, 2005
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20050074264
Publication date
Apr 7, 2005
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of removing residual...
Publication number
20050036805
Publication date
Feb 17, 2005
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, process cartridge, and waste toner recover...
Publication number
20050036810
Publication date
Feb 17, 2005
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge
Publication number
20050025520
Publication date
Feb 3, 2005
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning device, process cartridge, image forming apparatus and toner
Publication number
20050002705
Publication date
Jan 6, 2005
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20040228648
Publication date
Nov 18, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20040213597
Publication date
Oct 28, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Imaging apparatus, and toner and process cartridge used in the imag...
Publication number
20040202495
Publication date
Oct 14, 2004
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image carrier unit and image forming apparatus
Publication number
20040190936
Publication date
Sep 30, 2004
Kimura Yoshiyuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, and image forming apparatus
Publication number
20040170455
Publication date
Sep 2, 2004
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20040141779
Publication date
Jul 22, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20040136763
Publication date
Jul 15, 2004
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge for use in the same
Publication number
20040126139
Publication date
Jul 1, 2004
Hideo Yoshizawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY