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. 15, 1977
Filed:
Feb. 03, 1975
Philip L Chen, Plano, TX (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A flying spot scanning system is provided which is capable of scanning an unmodulated beam to a reading station for reading a stationary document and a modulated beam to an imaging station for recording an image thereat. The system utilizes optical elements which are common to both the unmodulated beam and the modulated beam to avoid duplication of elements of each beam. The beams strike the same facets of a rotating polygon scanner at the same location so that precise alignment of the facets will not be required. Relatively movable mirrors are moved across a stationary document at the reading station to provide a scan in such a manner to maintain optical conjugates constant.