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Image forming apparatus
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Issue date Jun 12, 2012
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Ricoh Company, Ltd.
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Kunihiro Yamanaka
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Ink jet printing apparatus
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Patent number 6,331,052
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Issue date Dec 18, 2001
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Ricoh Company, Ltd.
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Taeko Murai
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Ink jet printing head
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Issue date Oct 6, 1998
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Ricoh Company, Ltd.
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Yoshihisa Ohta
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS