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TECHNIQUE FOR AUTOMATICALLY ADJUSTING MACHINE SETTINGS TO PHOTORECEPTOR SENSITIVITY

IP.com Disclosure Number: IPCOM000025179D
Original Publication Date: 1983-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 63K

Publishing Venue

Xerox Disclosure Journal

Abstract

Electrostatographic reproduction devices which utilize photoreceptor belts as the image exposure medium must compensate, in some way, for two well-known problems associated with the manufacture of such belts.

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KEROX DISCLOSURE JOURNAL

TECHNIQUE FOR AUTOMATICALLY Proposed Classification ADJUSTING MACHINE SETTINGS TO
PHOTORECEPTOR SENSITIVITY
James A. Critchlow

U.S. C1. 355/3BE Int. C1. G03g 15/00

Electrostatographic reproduction devices which utilize photoreceptor belts as the image exposure medium must compensate, in some way, for two well-known problems associated with the manufacture of such belts.

The first problem is nonuniformity of copy quality around the seamed area of the belt. The seam must be identified in some way and the seamed area kept out of the exposure zone. The second problem is the variation in photosensitivity associated with present belt manufacturing techniques. Since each belt has its own unique response, belt replacement could adversely affect resultant copy quality.

One technique for correcting both problems is to modify the known method of punching holes at a set distance from the seam. In this method, the hole is used in conjunction with a detection system and machine logic to set the timing of the process stations and avoid the seamed area during exposure. This method can be modified by punching two or more holes into the belt following a test of belt sensitivity following manufacture. The photoreceptor "speed" can be encoded either by establishing, as criteria, the number of holes, spacing between holes, or the hole diameter. When the belt is installed in a machine, a detection system will "read" the encoded belt speed and adjust the exposu...