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:
Apr. 15, 1986
Filed:
Jul. 11, 1984
Wolfgang Wildmann, Offenbach am Main, DE;
Abstract
An automatic control system for a zonal ink metering device displaces ink metering elements toward a fountain roller until contact of the individual elements with the fountain roller is detected to establish absolute reference positions. Then the ink metering elements are displaced away from the fountain roller by respective predetermined amounts to obtain a desired ink profile. Once the desired ink profile is obtained, continuous printing is started. During continuous printing, the ink profile is maintained by periodically and sequentially reciprocating one individual ink metering element after another into contact with the fountain roller to reset their respective reference positions. Preferably, contact of the individual ink metering elements with the fountain roller is detected by a pair of electrical contacts in the adjusting devices for the ink metering elements. Preferably, a predetermined biasing force is applied urging the ink metering elements into contact with the fountain roller, and the adjusting mechanism applies force through the electrical contacts to displace the ink metering elements away from the fountain roller. Preferably, the ink metering elements are ink slides and electrical contact and force transmission occurs between a contact plate mounted via a rigid insulator to a substantially fixed support and the end of a threaded spindle engaging a nut fixed to the ink slide. Thus, when closure of the electrical contacts occur, the contact plate becomes grounded.