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:
Mar. 09, 1993
Filed:
Oct. 09, 1991
George A Charnitski, Fairport, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Overall length of LED print bars arranged in a single pass printing system is controlled by controlling the operating temperature of the LED arrays forming the light emitting portion of the print bar. Rather than trying to maintain the arrays at some predetermined temperature, the array temperatures are allowed to vary over a predetermined range but within this range, the arrays are all at the same temperature. This is accomplished by mounting the arrays on a common subframe which is adapted to circulate a cooling medium through each of the arrays in parallel rather than in series. Thus, each array is cooled at the same rate and will attain the same equilibrium temperature, thus ensuring that registration will be accomplished within each single pass operation.