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Kouichi Irie
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Kashiwa, JP
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last 30 patents
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Patent Grant
Color image forming apparatus
Patent number
6,118,557
Issue date
Sep 12, 2000
Ricoh Company, Ltd.
Mitsugu Sugiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner cartridge with an external reflector for a developer apparatu...
Patent number
5,899,597
Issue date
May 4, 1999
Ricoh Company Ltd.
Tadashi Shinohara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having automatic image density adjustment f...
Patent number
5,805,192
Issue date
Sep 8, 1998
Ricoh Company, Ltd.
Eiichi Sasaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus for calibrating toner density for color images
Patent number
5,737,665
Issue date
Apr 7, 1998
Ricoh Company, Ltd.
Mitsugu Sugiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner end detection device and method
Patent number
5,621,221
Issue date
Apr 15, 1997
Ricoh Company, Ltd.
Tadashi Shinohara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY