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:
Oct. 16, 1984
Filed:
Feb. 15, 1983
Pierce B Day, Pittsford, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A duplicator has a movable photoconductor on which electrostatic images are formed. A rotatable transparent cylinder positioned adjacent the front side of the photoconductor has a screen pattern thereon. Wheels on the cylinder contact the photoconductor so that the cylinder is rotated in response to movement of the photoconductor. An elongate light shield positioned inside the cylinder has a first slot adjacent the portion of the cylinder near the photoconductor, and a Fresnel lens is positioned in the slot. Light rays from a point source located outside the cylinder pass through a second slot in the shield and are reflected from a mirror inside the cylinder onto the Fresnel lens. The lens collimates the light rays and directs them through the screen on the transparent drum to thereby project onto the photoconductor an image of the screen pattern on the cylinder.