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. 06, 1979
Filed:
Dec. 09, 1977
Robert J Schilling, St. Paul, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A copy machine for reproducing original size, reduced or magnified copies of an original document is disclosed. The original document is supported on a transparent support surface. An optical scanning system is moved past the original document and an image of the document is transmitted to a photosensitive surface which is moved at constant speed. The speed of the optical scanning system is related to the magnification ratio. The scanning system is driven by a plurality of cams mounted upon a common cam shaft. Scanning speed is selected by coupling the scanning system to one of the plurality of cams.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile