Browse Prior Art Database

Erase Lamp Reflector

IP.com Disclosure Number: IPCOM000087780D
Original Publication Date: 1977-Mar-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Dean, HB: AUTHOR [+2]

Abstract

An improved erase lamp structure is shown.

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Erase Lamp Reflector

An improved erase lamp structure is shown.

The erase lamp structure comprises lamp 10 mounted for producing light emission through opening 12 to an adjacent electrophotographic surface. As shown in the left figure, a nonuniform shaped aperture was used to produce uniform light emission on a photoconductor surface. The shape of the aperture was wider at the ends than at the middle since fluorescent lamps, which are normally used for erase lamps, have lower light emission at the ends.

The improved system shown in the right figure has a uniform aperture 12 and a reflector 14 extending around part of the lamp. The surfaces of reflector 14 have less reflectance in areas where light emission is high and greater reflectance in the areas where light emission is low. Thus, the reflector and the lamp produce a uniform light emission through the uniform aperture, and this arrangement provides better contamination control.

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