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IMPROVED PHOTORECEPTOR CLEANING APPARATUS

IP.com Disclosure Number: IPCOM000024089D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 246K

Publishing Venue

Xerox Disclosure Journal

Abstract

One problem with vacuum cleaning of the photoreceptor surface in a xerographic system is the difficulty in removing the submicron toner particles even when various corona discharge treatments are applied. One of the main reasons a preclean treatment has experienced problems is due to the location of the corona discharge. With a corotron such as a dicorotron located upstream from the vacuum

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XEROX DISCLOSURE JOURNAL

IMPROVED PHOTORECEPTOR CLEANING APPARATUS
Nero R. Lindblad
Henry R. Till

Proposed Classification

U.S. CL 355/15

mt. CL G03g 21/00

One problem with vacuum cleaning of the photoreceptor surface in a xerographic system is the difficulty in removing the submicron toner particles even when various corona discharge treatments are applied. One of the main reasons a preclean treatment has experienced problems is due to the location of the corona discharge. With a corotron such as a dicorotron located upstream from the vacuum

port entrance, it appears that the toner adhering directly on the photoreceptor surface cannot be treated effectively. Addition of a second corotron immediately after the vacuum port produced no noticeable enhancement in cleaning.

Here, corona and light discharge are introduced directly on the toner particles that remain on the photoreceptor surface after the initial cleaning step.

In the arrangement shown, a web or brush cleaning belt 5 is entrained about supporting rolls 6, 7 and roll pair 8, Rolls 6, 7 support cleaning belt 5 in contact with the surface of photoreceptor 9. An intermediate belt guide roll 11 rides against the exterior surface of cleaning belt 5 in the space between supporting rolls 6, 7, guide roll 11 forcing cleaning belt 5 outwardly of and away from the surface

of photoreceptor 9 to create semi-~circularcavity 12. Discharge corotron 13 and lamp 14 are positioned within cavity 12 to treat the surface of phot...