The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1997
Filed:
Nov. 16, 1995
Hiroyasu Kato, Tokyo, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
An ink supply device for a printing apparatus, the ink supply device being positioned within a porous cylindrical drum and including: a frame body having side plates confronting each other; an ink supply roller supported between the side plates by the frame body, a lower portion of the ink supply roller coming in contact with an inner circumferential surface of the cylindrical drum, and the ink supply roller being rotatable about a central axis thereof and in synchronism with the rotation of the cylindrical drum; an ink amount control member supported between the plates by the frame body, and having a predetermined gap with respect to an outer circumferential surface of the ink supply roller while extending along one generatrix of the ink supply roller, wherein the ink amount control member, the ink supply roller and the side plates cooperate to form a space in which ink is pooled; a rodlike member supported between the side plates by the frame body and extending within the space where ink is pooled along the generatrix of the ink supply roller; an ink distributor supported by the frame body and positioned above the ink supply roller; and grooves arranged on the ink amount control member, for spreading ink in the space where ink is pooled along the generatrix of the ink supply roller while the ink supply roller is being rotated.