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AN OPTICAL SYSTEM EMPLOYING REFLECTOR BARS

IP.com Disclosure Number: IPCOM000025388D
Original Publication Date: 1985-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 58K

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrophotographic printing machine, it has been found that there are regions of low illumination in the optical cavity of the imaging system. These regions of low illumination may be corrected by employing reflector bars. As shown in the drawing, reflector bars 10 and 12 are positioned adjacent photo-conductive surface 14. Reflector bar 12 is a flat metal surface positioned perpendicular and parallel to the front of the ima%e area on photoconductive surface 14. At region 16, thereof, there is a short 90 L which mates with right hand reflector bar 10. This portion is at an angle of 10' with respect to the vertical as is reflector bar 10. All of the surface facing into or toward the photoconductive surface is painted with highly reflective white paint. The physical dimensions of the reflector bars, their reflectivity, plus position and angle cause a specific amount of stray light from outside the image area to be reflected back onto the photoconductive surface. This corrects copy defects caused by low image regions in the optical cavity.

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XEROX DISCLOSURE JOURNAL

AN OPTICAL SYSTEM EMPLOYING REFLECTOR BARS
J. Hainey

Proposed Classification

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

Volume 10 Number 1 January/February 1985 35

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Page 2 of 2

AN OPTICAL SYSTEM EMPLOYING REFLECTOR BARS (Cont'd)

In an electrophotographic printing machine, it has been found that there are regions of low illumination in the optical cavity of the imaging system. These regions of low illumination may be corrected by employing reflector bars. As shown in the drawing, reflector bars 10 and 12 are positioned adjacent photo- conductive surface 14. Reflector bar 12 is a flat metal surface positioned perpendicular and parallel to the front of the ima%e area on photoconductive surface 14. At region 16, thereof, there is a short 90 L which mates with right hand reflector bar 10. This portion is at an angle of 10' with respect to the vertical as is reflector bar 10. All of the surface facing into or toward the photoconductive surface is painted with highly reflective white paint. The physical dimensions of the reflector bars, their reflectivity, plus position and angle cause a specific amount of stray light from outside the image area to be reflected back onto the photoconductive surface. This corrects copy defects caused by low image regions in the optical cavity.

36 XEROX DISCLOSURE JOURNAL

Volume 10 Number 1 January/February 1985

[This page contains 1 picture or other non-text object]...