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:
Jun. 22, 2004
Filed:
Sep. 09, 2002
Martin John Callahan, Dover, NH (US);
Wolfgang Schönberger, Schriesheim, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
A method of adjusting dampening-solution feed of an offset printing press by a control device includes determining a required dampening-solution demand for a first calibration printing form with a known minimum percent area coverage and for a second calibration printing form with a known maximum percent area coverage at a calibration speed, and storing the dampening-solution demand in the control device as interpolation reference points; determining a percent area coverage lying between the maximum and the minimum percent area coverage of the calibration printing forms of a printing form to be used for a forthcoming print job, and passing the determined percent area coverage on to the control device; determining by the control device the dampening-solution demand required for the forthcoming print job with the printing form provided for the purpose at the calibration speed, by interpolating between the interpolation reference points; determining a printing-speed dependent characteristic curve of the dampening-solution demand required for the forthcoming print job with the printing form provided for the purpose; and controlling, during the processing of the print job, the feed of the dampening solution along the characteristic curve.