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:
Aug. 16, 1988
Filed:
Oct. 17, 1986
Applicant:
Inventor:
Josef Matkan, Malvern, AU;
Assignee:
Stork Research B.V., Boxmeer, NL;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
430 45 ; 430 47 ; 430126 ;
Abstract
An electrophotographic method of producing positive color proof copies from negative films wherein a charged photoconductor is exposed to the negative film and toned with a conductive toner forming image deposits in the unexposed area. The conductive deposits are transferred to a dielectric paper and affixed thereto. The dielectric paper is charged, the charge being accepted only in areas free of the conductive deposits, i.e. the final image areas. The charged areas are toned with color toners and the color toner deposit transferred to printing stock to provide the positive proof.