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ERASE DEVICE

IP.com Disclosure Number: IPCOM000024967D
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates to the interdocument and edge erase functions in a xerographic machine. These functions call for sharp voltage gradients to be generated on the photoreceptor. Ideally then, a light beam which is in the form of a step function is desired. The foregoing is accomplished through the use of one or more light sources 10 (Figure 1) used in conjunction with a light collimating device 12, such as a 3M "Light Control Film" to eliminate the flaring of light and thereby produce a sharp light beam.

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Proposed Classification US. C1. 355/67
Int. CI. G03b 27/54

Kenneth Favata Daniel R. Heigl

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FIG. I

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POSITION ON PHOTORECEPTOR

FIG. 2

Volume 8 Number 1 January/February 1983 53

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ERASE DEVICE (Cont'd)

This disclosure relates to the interdocument and edge erase functions in a xerographic machine. These functions call for sharp voltage gradients to be generated on the photoreceptor. Ideally then, a light beam which is in the form of a step function is desired. The foregoing is accomplished through the use of one or more light sources 10 (Figure 1) used in conjunction with a light collimating device 12, such as a 3M "Light Control Film" to eliminate the flaring of light and thereby produce a sharp light beam.

Figure 2 illustrates the light intensity profile at the surface of the photoreceptor 14 with and without the use of the light control film, the dotted line illustration representing such profile without the use of the film. As illustrated in the figures, particularly Figure 2, only one of the light sources used for edge erase is a function of the paper width.

Any light source that provides sufficient intensity may be used. Miniature incandescent bulbs or narrow beam LEDs are contemplated. If narrow beam light sources are used, then opaque partitions 16 may not be necessary to prevent spill over of light.

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    XEROX DISCLOSURE JOURNAL Volume 8 Number 1...