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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
Document File: 2 page(s) / 221K

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.

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XEROX DISCLOSURE JOURNAL

APPLICATION OF RtJTICONS FOR Proposed Classification
UNDERCOLOR REMOVAL U.S~ Cl. 96/1
Dorian Kerrnisch mt. Cl. G03g

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.

By RUTICON is meant those devices which are layered structures
comprising, for example, a transparent conducting substrate, a
photoconductor layer, a layer of deformable elastorner, and a
thin metallic film, such a device being responsive to electric
fields produced by imagewise charge patterns on the photo-
conductor,

Volume 3 Number 6 November/December 1978 365

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                 XEROX DISCLOSURE JOURNAL
366 Volume 3 Number 6 November/December 1978

[This page contains 1 picture or other non-text object]