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:
Jul. 01, 2003
Filed:
Sep. 24, 1999
Axel Heuer, Fahren, DE;
Holger Suhr, Kiel, DE;
Heidelberger Druckmaschinen Aktiengesellschaft, Heidelberg, DE;
Abstract
In a method and an apparatus for point-by-point and line-by-line scanning of a master chucked on a scanner drum, for pixel-by-pixel illumination of the master, a light spot is generated in a light conductor and is imaged onto the master as illumination spot. The light conductor is arranged displaceable with an actuating drive for the purpose of modifying the imaging scale of the illumination spot. For setting the illumination, the luminance of the illumination spot is measured with the opto-electronic scanner element. In a computer, control signals for the actuating drive are generated dependent on the measured luminance. For setting the optimum illumination of the master, the imaging scale of the illumination spot is modified such by displacing the light conductor that the measured luminance of the illumination spot is maximum.