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Browse Prior Art Database

COMPENSATION COROTRON

IP.com Disclosure Number: IPCOM000024928D
Original Publication Date: 1982-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 87K

Publishing Venue

Xerox Disclosure Journal

Abstract

A multi-segmented compensation corotron is shown capable of selectively charging specific areas of the photoreceptor. -The configuration is shown in the figure. It uses a common wire with segmented shields that are individually addressed (via control circuitry) for location and amount of charge required for a particular portion of the photoreceptor surface.

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XEROX DISCLOSURE JOURNAL

COMPENSATION COROTRON
P. Hanna, Jr.
D. J. Weikel, Jr.

Proposed Classification 1J.S. CI. 250/324
Int. C1. HOIt 19/04

A multi-segmented compensation corotron is shown capable of selectively charging specific areas of the photoreceptor. -The configuration is shown in the figure. It uses a common wire with segmented shields that are individually addressed (via control circuitry) for location and amount of charge required for a particular portion of the photoreceptor surface.

In combination with the subject corotron is an electrostatic voltmeter that is identically segmented. This results in n (number of segments) feedback loops, one for each corotron - ESV segment.

During the initial charge cycle, each corotron segment is equally biased. The segmented ESV will monitor the surface potential at the n locations and, via a comparison with the required potential, alert the control circuitry of the over/- correct/under voltage conditions of each segment. The control circuitry will select the proper segments (in over/under voltage conditions) and ad just the shield bias accordingly. Once the lateral photoreceptor surface potential has met a predeter- mined and programmed condition range for imaging at VDDp (dark decay poten- tial), copying may commence.

Volume 7 Number 6 November/December 1982 357

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COMPENSATION COROTRON (Cont'd)

The software should be written to activate the drum dis...