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AUTOMATED SETUP FOR XEROGRAPHIC COPIERS

IP.com Disclosure Number: IPCOM000025278D
Original Publication Date: 1984-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 86K

Publishing Venue

Xerox Disclosure Journal

Abstract

Because of the variability in xerographic components, particularly the photo-receptor and developer material, it is usually necessary to make individualized machine adjustments to achieve the desired copy quality characteristics. In practice, the procedures used depend upon the skills and tools available. In the laboratory, one has a variety of instruments with which the entire system can be characterized, subsystem by subsystem, then analyzed to determine where, in the n-dimensional variable space, the system will produce the desired output. At the other extreme, in the field, for example, the only tools may be a good eye and 'some process understanding that are combined with a trial and error procedure to achieve the desired result. The latter procedure is highly subjective, leaving much to the individual judgment of the Technical Representative performing the setup. As the technology advances, there is a growing need and capability to leave less to chance. Also, the iterative trial and error procedure can be time-consuming and, therefore, expensive.

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XEROX DISCLOSURE JOURNAL

AUTOMATED SETUP FOR XEROGRAPHIC COPIERS US. CI. 324/32 Robert L. Thompson

Proposed Classification

Int. C1. GOlr 5/28

 Because of the variability in xerographic components, particularly the photo- receptor and developer material, it is usually necessary to make individualized machine adjustments to achieve the desired copy quality characteristics. In practice, the procedures used depend upon the skills and tools available. In the laboratory, one has a variety of instruments with which the entire system can be characterized, subsystem by subsystem, then analyzed to determine where, in the n-dimensional variable space, the system will produce the desired output. At the other extreme, in the field, for example, the only tools may be a good eye and 'some process understanding that are combined with a trial and error procedure to achieve the desired result. The latter procedure is highly subjective, leaving much to the individual judgment of the Technical Representative performing the setup. As the technology advances, there is a growing need and capability to leave less to chance. Also, the iterative trial and error procedure can be time-consuming and, therefore, expensive.

A setup methodology is disclosed that utilizes the tools expected to be available in the field for the installation of today's copiers. The principal tools for this procedure are a portable electrostatic volt meter (ESV), an optical reflectance sensor such as an infrared densitometer (IRD) positioned to sense developed images on the photoreceptor prior to transfer of the images to paper, and an on-board microprocessor. The microprocessor must be capable o...