Stencil printing machine and stencil printing drum

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6173646
SERIAL NO

09327553

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A stencil printing machine has a printing drum having a cylindrical circumferential wall adapted to receive a perforated stencil sheet wrapped on an outer circumferential surface thereof and driven to rotate around a central axis thereof the circumferential wall having an opening portion with many through holes formed therein, a non-opening portion formed around the opening portion, and at least one recessed portion formed in at least one part of the opening portion adjacent to the non-opening portion in an axial direction of the circumferential wall; an ink supplying roller situated in the printing drum for supplying ink to an inner circumferential surface of the cylindrical circumferential wall of the printing drum; and a press roller situated adjacent to the printing drum and being urged against the outer circumferential surface of the cylindrical circumferential wall of the printing drum.

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First Claim

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Patent Owner(s)

  • RISO KAGAKU CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Negishi, Hideo Ibaraki-ken, JP 25 180
Tanaka, Yoshitaka Ibaraki-ken, JP 50 410

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