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Predicting a Photoconductor's Propensity to Toner Film

IP.com Disclosure Number: IPCOM000052304D
Original Publication Date: 1981-May-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Anderson, HW: AUTHOR [+2]

Abstract

The measurement of the coefficient of friction between an electrophotographic photoconductor sample and a compressed block of toner is a measure of the photoconductor's tendency to toner film when used in the xerographic duplicating process. More specifically, the higher the coefficient of friction, the higher the tendency to toner film.

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Predicting a Photoconductor's Propensity to Toner Film

The measurement of the coefficient of friction between an electrophotographic photoconductor sample and a compressed block of toner is a measure of the photoconductor's tendency to toner film when used in the xerographic duplicating process. More specifically, the higher the coefficient of friction, the higher the tendency to toner film.

A photoconductor sample about eighteen inches square is dusted with a given toner by using a nylon brush. The photoconductor is then cleaned of toner by the use of compressed air, followed by wiping with cotton padding. This procedure breaks-in the photoconductor's surface.

A compressed block of this same toner is placed on the photoconductor surface while this surface is oriented horizontally. The toner block is weighted to about 40 grams. A kinetic force gauge is attached to the toner block, and the block is pulled across the photoconductor surface using the force gauge. Several readings are taken from the force gauge, and the readings are averaged. The coefficient of friction is then calculated.

For any given photoconductor/toner system, too low a coefficient of friction is indicative of low optical density copies when used in a xerographic duplicating machine, whereas too high a coefficient of friction is indicative of photoconductor toner filming during such use.

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