Browse Prior Art Database

SELF CALIBRATING PHOTORECEPTOR SCANNER

IP.com Disclosure Number: IPCOM000027054D
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 90K

Publishing Venue

Xerox Disclosure Journal

Abstract

typically entails testing o P the finished photoreceptor in a scanner to determine The manufacturing of hotoreceptors for electrophotographic imaging the electrostatic characteristics of the product. To be able to conduct a valid test, calibrations are carried out manually on a daily basis on components in the scanners such as corotrons, light sources, and electrometers. This process can be time consuming, and may be carried out less frequently than might be desired because of time and manpower limitations. Manufacturing throughput is also reduced by the necessary calibration process. Further, the scanner components may drift between calibrations. The output of the scanner is used for manufacturing process adjustments and dispositioning, so any false readings occurring because of drift may result in incorrect process corrections and incorrect release or service of the product.

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XEROX DISCLOSURE JOURNAL

SELF CALIBRATING PHOTO- Proposed Classification RECEPTOR SCANNER U.S. C1.355/203 Cleveland E. Cooper, Willie J. Cottrell,
Jr., Dennis A. Vendetta, Beth A. Spingar,
Donald F. Hilliard, Richard D. Hunt,
Richard L. Clark, Jr., and Steven M.

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Int. C1. G03g 21/00

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XEROX DISCLOSURE JOURNAL - Vol. 20, No. 1 JanuaryIFebruary 1995 37

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SELF CALIBRATING PHOTORECEPTOR SCANNER (Cont'd)

The manufacturing of hotoreceptors for electrophotographic imaging

the electrostatic characteristics of the product. To be able to conduct a valid test, calibrations are carried out manually on a daily basis on components in the scanners such as corotrons, light sources, and electrometers. This process can be time consuming, and may be carried out less frequently than might be desired because of time and manpower limitations. Manufacturing throughput is also reduced by the necessary calibration process. Further, the scanner components may drift between calibrations. The output of the scanner is used for manufacturing process adjustments and dispositioning, so any false readings occurring because of drift may result in incorrect process corrections and incorrect release or service of the product.

The mechanical layout of the scanner can be prepared as shown in the figure.

As shown, scanning device 1 containing photoreceptor 3 is equipped with light source 5, light intens...