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:
Aug. 15, 1995
Filed:
Sep. 30, 1992
Joseph J Pfeuffer, Spokane, WA (US);
Output Technology Corporation, Spokane, WA (US);
Abstract
A continuous-form electrophotographic printer 10 measures velocity information each time a new continuous-form media 12 is loaded into the printer to compensate for differences in media, printer wear, and variations in manufacturing tolerances. The continuous-form electrophotographic printer 10 includes a media motion assembly 53 which moves the continuous-form media 12 at a constant velocity initially past an image transfer station 20 and then past an image fixing station 22. A media motion sensor 49 measures the movement of the media 12 and outputs a signal at equal predetermined segments of the media. An image forming device 60 at the image transfer station 20 places multiple scan lines at a predetermined scan rate on a drum 28. A scan line sensor 78 senses each scan line. A speed control system 52 varies the velocity of the media for sequential segments of media and counts the number of scan lines per media segment. The speed control system 52 compares the actual number of scan lines to a predetermined optimum number of scan lines, and then adjusts the velocity of the media based upon the comparison. As a result, the media is moved at a velocity which permits the optimum number of scan lines per media segment.