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Image forming apparatus
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Patent number 5,107,278
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Issue date Apr 21, 1992
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Ricoh Company, Ltd.
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Kazuyuki Shimada
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Image forming apparatus
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Patent number 4,977,414
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Issue date Dec 11, 1990
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Ricoh Company, Ltd.
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Kazuyuki Shimada
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G06 - COMPUTING CALCULATING COUNTING
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Electrostatic recording apparatus
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Patent number 4,875,063
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Issue date Oct 17, 1989
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Ricoh Company, Ltd.
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Hiroyuki Idenawa
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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