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APPLICATION OF RUTICONS FOR UNDERCOLOR REMOVAL

IP.com Disclosure Number: IPCOM000023697D
Original Publication Date: 1978-Dec-31
Included in the Prior Art Database: 2004-Mar-31

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a process whereby negative exposure of a photo-receptor in an electrophotographic copying system after a color separation exposure provides for removal of the black image formation from the photoreceptor before color toning. In one embodiment, the process involves refraining from using color toners in areas where it is intended that a black toner be applied. As each color is printed, the dark areas of the xerographic drum are illuminated, which can be done by employing a RUTICON in the negative mode, thereby projecting a negative image in registration with the positive color separa-tion image either directly onto the drum or on the intermediate RUTICON used for color correction.