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:
Jan. 18, 1977
Filed:
Mar. 07, 1975
Applicant:
Inventors:
Robert Nathan Goren, Rochester, NY (US);
William Streifer, Palo Alto, CA (US);
Lawrence Morton Marks, Mississauga, CA;
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-4 ; 355 32 ;
Abstract
Apparatus for optically imaging a halftone pattern on a xerographic photoreceptor to produce color copies of a color original. The apparatus includes a phase screen for providing a predetermined halftone pattern, the screen producing substantially the same pattern at the same spatial frequency over the visible light spectrum.