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Providing a Safeguard to Eliminate Photoconductor Damage

IP.com Disclosure Number: IPCOM000094718D
Original Publication Date: 1965-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Hawn, FA: AUTHOR

Abstract

Usually, transfer of a latent electrostatic image is dynamically effected by establishing an intense electric field between the back of a photoconductive drum bearing the latent electrostatic image and a conductive transfer roller.

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Providing a Safeguard to Eliminate Photoconductor Damage

Usually, transfer of a latent electrostatic image is dynamically effected by establishing an intense electric field between the back of a photoconductive drum bearing the latent electrostatic image and a conductive transfer roller.

The dielectric sheet to which the latent image on the drum is to be transferred is passed between the conductive roller and drum to effect charge transfer. If the conductive roller contacts the photoconductor while potential is applied to it, arcing and resultant damage to the photoconductor can occur.

In this system, there is assurance that the potential is never across conductive roller 1 and photoconductive drum 2. Potential is applied across 2 and conductive blade 3. Dielectric sheet 4 has a conductive backing such that the potential on 3 is effectively applied to 1 only when 4 is between 1 and 2.

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