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.

Date of Patent:
Mar. 23, 1999

Filed:

Jun. 27, 1997
Applicant:
Inventors:

Hiroyuki Sugiyama, Ibaragi, JP;

Teruhiko Hama, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101484 ; 101365 ;
Abstract

In an ink film thickness control method for an ink supply apparatus including an ink fountain for storing an ink, a plurality of ink fountain keys whose aperture ratios are independently adjusted to supply said ink in said ink fountain, an ink fountain roller to which said ink is supplied through said ink fountain keys, and an ink ductor roller for supplying said ink supplied to said ink fountain roller to a printing plate through an ink roller group in accordance with a feed operation, the feed operation of said ink ductor roller is set in an OFF state when said printing plate is to be exchanged. A printing press in which said previous printing plate is kept mounted is operated without performing the feed operation of said ink ductor roller, thereby rotating said ink roller group. Printing is performed on a predetermined number of paper sheets using said previous printing plate to leave a first minimum ink film thickness distribution necessary for printing such that an ink film becomes thinner from an upstream to a downstream.


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