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:
May. 08, 1990
Filed:
Oct. 14, 1988
David S Wise, Solon, OH (US);
Tameran, Inc., Chagrin Falls, OH (US);
Abstract
A broad magnification ratio range, microform to paper printing system includes a fixed focal length objective lens, a selectively adjustable short zoom mirror assembly, a selectively adjustable long zoom mirror assembly and optical switching means selectively to exclude or include the long zoom mirror assembly to provide the optical path length needed for the magnification ratio selected. The printing system may include an aperture shutter assembly positioned immediately adjacent the image slit of the optical system, the aperture shutter assembly having two blades operative to set the aperture width therebetween to control drum exposure and also operative selectively to close the aperture therebetween to block drum exposure.