Browse Prior Art Database

PREFIX DEP

IP.com Disclosure Number: IPCOM000026272D
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 54K

Publishing Venue

Xerox Disclosure Journal

Abstract

Direct Electrostatic Printing (DEP) is a process by which toner images are formed directly on paper, or other receiver material, via imagewise modulation of toner flow through an array of apertures. Characteristically, some toner particles bounce off the receiver sheet and come to rest somewhat displaced from their intended position. With a magnifying eyepiece, one can see the toner scattered around the edges of characters and in severe cases some loss of image sharpness is visible to the unaided eye. In addition, dry toner images require some kind of fusing process to fix the image to the sheet.

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XEROX DISCLOSURE JOURNAL

PREFIX DEP

Proposed Fred Schmidlin Classification

U.S. Cl. 346j153.1 Int. C1. Gold 15/06

Direct Electrostatic Printing (DEP) is a process by which toner images are formed directly on paper, or other receiver material, via imagewise modulation of toner flow through an array of apertures. Characteristically, some toner particles bounce off the receiver sheet and come to rest somewhat displaced from their intended position. With a magnifying eyepiece, one can see the toner scattered around the edges of characters and in severe cases some loss of image sharpness is visible to the unaided eye. In addition, dry toner images require some kind of fusing process to fix the image to the sheet.

This disclosure relates to a means of fixing toner images while simultaneously improving image sharpness by reducing toner bounce. Application of a thin transparent layer of highly viscous or tacky material to the paper, or other sheet like receiver material, causes the toner to stick on impact and greatly improves edge sharpness. By choosing a material that subsequently hardens, the image fixing process will automatically occur. An example of a material that has the desired properties is film coater.

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 1 .JanuaryiFebruary 1991 15

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16 XEROX DISCLOSURE JOURNAL - VoI. 16, No. 1 January/February 1991

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