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:
Sep. 28, 1982
Filed:
May. 11, 1981
Vance J Carpenter, Fairport, NY (US);
Eugene L Yang, Fairport, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An optical imaging system for scanning a document moving through an exposure zone. The imaging system comprises optical components including a mirror arrangement and a projection assembly for projecting reflected document images onto a flat portion of a photoreceptor. The optical components are stationary in a first mode of operation wherein documents are stream fed past the exposure zone at the process speed. In a second mode of operation, wherein multiple copies are made of the same document, the optical components are moved in a defined relationship so that the image is projected onto the photoreceptor in a direction opposite to the direction of photoreceptor motion. This form of image projection is termed image precession and results in additional time being available to replace the document at the start of scan portion without reduction in copy reproduction rate.