Browse Prior Art Database

METHOD FOR SINGLE PASS HIGH QUALITY COLOR PRINTING

IP.com Disclosure Number: IPCOM000026308D
Original Publication Date: 1991-Apr-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 54K

Publishing Venue

Xerox Disclosure Journal

Abstract

A technology which offers a direct method of printing is Direct Electrostatic Printing (DEP) whereby charged toner particles are "gated" through holes in a head in a pixelwise fashion directly to paper or an intermediate. Using DEP, single pass color printing becomes possible. One problem with-the DEP . process is toner bounce which limits the quality of the image. This is especially troublesome for color printing where the bounce and scatter will degrade color as well as resolution.

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XEROX DISCLOSURE JOURNAL

METHOD FOR SINGLE PASS HIGH QUALITY COLOR PRINTING US. C1.346/153.1 Michael D. Thompson

Proposed Classification

Int. C1. Gold 15/06

A technology which offers a direct method of printing is Direct Electrostatic Printing (DEP) whereby charged toner particles are "gated" through holes in a head in a pixelwise fashion directly to paper or an intermediate. Using DEP, single pass color printing becomes possible. One problem with-the DEP . process is toner bounce which limits the quality of the image. This is especially troublesome for color printing where the bounce and scatter will degrade color as well as resolution.

A solution to the toner bounce problem is proposed in which a peel layer of high molecular weight wax is applied to the intermediate imaging member using a gravure roll. Then, the DEP heads develop onto the intermediate member wherein the wax layer absorbs the kinetic energy of the toner allowing the toner to stick to the receiver. The layer is then transferred to paper and the excess wax left on the imaging member is removed. The wax layer on the paper can be very thin (< 10 microns) and may be removed from the paper via a heated roller after the image is fixed to the paper.

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 2 MarcldAprilIWI 97

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98 XEROX DISCLOSURE JOURNAL - Vol. 16, No. 2 March/April1991

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