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:
May. 01, 1979
Filed:
Feb. 04, 1975
Rudolf Uhrig, Altenbach, DE;
Heidelberger Druckmaschinen Aktiengesellschaft, Heidelberg, DE;
Abstract
A method of automatically controlling deviations in the liquid ink and dampening liquid feed in an offset printing press includes irradiating a layer formed of liquid ink and ingredients of a dampening liquid deposited on a plate cylinder of the press with at least one source of radiation, selectively interposing, in the radiation path between the radiation source and the irradiated liquid layer, wave length absorption filters, selecting certain wavelengths most heavily absorbed by at least one of the liquids, comparing measured values for the ink layer and the individual ingredients of the dampening liquid with a given nominal value and, in accordance with a quantitative deviation between the measured and the nominal values, automatically actuating a control circuit for regulating the feed of the liquid ink and the dampening liquid; and a device for carrying out the foregoing method.