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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Development device and image forming apparatus and process unit inc...
Patent number
9,008,556
Issue date
Apr 14, 2015
Ricoh Company, Ltd.
Yuuji Ishikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, image forming apparatus, and developing method
Patent number
8,768,224
Issue date
Jul 1, 2014
Ricoh Company, Limited
Daichi Yamaguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and method capable of obtaining high qualit...
Patent number
8,626,039
Issue date
Jan 7, 2014
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Developing apparatus and image forming apparatus
Patent number
8,059,996
Issue date
Nov 15, 2011
Ricoh Company, Limited
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Filling-rate lowering and rolling rate adjusting image forming appa...
Patent number
7,822,351
Issue date
Oct 26, 2010
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Device for driving rotary body with mechanism for dampening fluctua...
Patent number
7,751,746
Issue date
Jul 6, 2010
Ricoh Company, Limited
Katsuaki Miyawaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Corona charger having two charging regions
Patent number
7,738,813
Issue date
Jun 15, 2010
Ricoh Company, Ltd.
Kei Yasutomi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, process cartridge, and image forming apparatus
Patent number
7,734,233
Issue date
Jun 8, 2010
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device using electrostatic transport and hopping (ETH)
Patent number
7,672,625
Issue date
Mar 2, 2010
Ricoh Company, Ltd.
Tomoko Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, and image forming apparatus and process cartridg...
Patent number
7,480,475
Issue date
Jan 20, 2009
Ricoh Company Limited
Yasuo Miyoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing method, developing device, and image forming apparatus i...
Patent number
7,359,661
Issue date
Apr 15, 2008
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, image forming apparatus and process cartridge in...
Patent number
7,209,685
Issue date
Apr 24, 2007
Ricoh Company, Ltd.
Hajime Oyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer supplying device, developing roller, developing device, i...
Patent number
7,181,155
Issue date
Feb 20, 2007
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of reducing mechanic...
Patent number
7,099,611
Issue date
Aug 29, 2006
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, image forming apparatus, and process cartridge
Patent number
7,035,575
Issue date
Apr 25, 2006
Ricoh Company, Ltd.
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,901,233
Issue date
May 31, 2005
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus method and developing device to obtain a st...
Patent number
6,788,913
Issue date
Sep 7, 2004
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,721,516
Issue date
Apr 13, 2004
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation unit including stored performance information
Patent number
6,707,480
Issue date
Mar 16, 2004
Ricoh Company, Ltd.
Minoru Ameyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development method apparatus, image formation and process cartridge...
Patent number
6,658,227
Issue date
Dec 2, 2003
Ricoh Company, Limited
Hajime Oyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, monocolor image forming apparatus, toner r...
Patent number
6,611,672
Issue date
Aug 26, 2003
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method and apparatus using developer carrier pressed...
Patent number
6,608,984
Issue date
Aug 19, 2003
Ricoh Company, Ltd.
Junichi Matsumoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner support member and developing device prevented from charging...
Patent number
6,526,248
Issue date
Feb 25, 2003
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and an image forming process unit
Patent number
6,505,014
Issue date
Jan 7, 2003
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, developing device therefor and image formi...
Patent number
6,463,244
Issue date
Oct 8, 2002
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus and method for forming an image using a developing device...
Patent number
6,295,437
Issue date
Sep 25, 2001
Ricoh Company, Ltd.
Takashi Hodoshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,163,669
Issue date
Dec 19, 2000
Ricoh Company, Ltd.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device for image forming apparatus with toner recirculat...
Patent number
5,655,193
Issue date
Aug 5, 1997
Ricoh Company, Ltd.
Takatsugu Fujishiro
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Rotary developing device for an image forming apparatus
Patent number
5,565,973
Issue date
Oct 15, 1996
Ricoh Company, Ltd.
Takatsugu Fujishiro
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS AND PROCESS UNIT INC...
Publication number
20130243499
Publication date
Sep 19, 2013
Yuuji Ishikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20130071148
Publication date
Mar 21, 2013
Yuuji ISHIKURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND DEVELOPING METHOD
Publication number
20120213557
Publication date
Aug 23, 2012
RICOH COMPANY, LIMITED
Daichi Yamaguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND METHOD CAPABLE OF OBTAINING HIGH QUALIT...
Publication number
20120082485
Publication date
Apr 5, 2012
Katsuhiro AOKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING APPARATUS AND IMAGE FORMING APPARATUS
Publication number
20090324301
Publication date
Dec 31, 2009
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20090074431
Publication date
Mar 19, 2009
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20090003904
Publication date
Jan 1, 2009
Kei YASUTOMI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Driving device or image forming apparatus
Publication number
20080261768
Publication date
Oct 23, 2008
Ricoh Company, Limited
Katsuaki Miyawaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD
Publication number
20080219702
Publication date
Sep 11, 2008
Takeo TSUKAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CORONA CHARGER AND IMAGE FORMING APPARATUS USING THE SAME
Publication number
20080118275
Publication date
May 22, 2008
Kei YASUTOMI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Publication number
20070242985
Publication date
Oct 18, 2007
Katsuhiro AOKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE USING ELECTROSTATIC TRANSPORT & HOPPING (ETH)
Publication number
20070212121
Publication date
Sep 13, 2007
Tomoko TAKAHASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing device, and image forming apparatus and process cartridg...
Publication number
20060198663
Publication date
Sep 7, 2006
Yasuo Miyoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing device, image forming apparatus and process cartridge
Publication number
20060008297
Publication date
Jan 12, 2006
Hajime Oyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developer supplying device, developing roller, developing device, i...
Publication number
20060002744
Publication date
Jan 5, 2006
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing method, developing device, and image forming apparatus i...
Publication number
20050191095
Publication date
Sep 1, 2005
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing device, image forming apparatus, and process cartridge
Publication number
20050002701
Publication date
Jan 6, 2005
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of reducing mechanic...
Publication number
20040223792
Publication date
Nov 11, 2004
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20040120733
Publication date
Jun 24, 2004
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Development method and apparatus, image formation apparatus and pro...
Publication number
20030035663
Publication date
Feb 20, 2003
Hajime Oyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20020154917
Publication date
Oct 24, 2002
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image formation unit and image formation apparatus
Publication number
20020135655
Publication date
Sep 26, 2002
Minoru Ameyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, monocolor image forming apparatus, toner r...
Publication number
20020051664
Publication date
May 2, 2002
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and an image forming process unit
Publication number
20020039496
Publication date
Apr 4, 2002
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, developing device therefor and image formi...
Publication number
20010038763
Publication date
Nov 8, 2001
RICOH COMPANY, LTD.
Katsuhiro Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY