Browse Prior Art Database

Heat Removal System for Illumination Device

IP.com Disclosure Number: IPCOM000082837D
Original Publication Date: 1975-Feb-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Paterson, RL: AUTHOR

Abstract

A heat removal system is employed adjacent to the illumination device of a copy machine or the like to remove excessive heat from the document area.

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Heat Removal System for Illumination Device

A heat removal system is employed adjacent to the illumination device of a copy machine or the like to remove excessive heat from the document area.

Heat generated by the illumination lamp 11 is absorbed by the heat removal system 13 comprising a heat pipe. In its simplest form, the heat pipe consists of a vacuum chamber lined with a capillary structure or a wick, saturated with some kind of a volatile fluid.

Heat applied to the lamp end of the pipe causes the working fluid to be vaporized and the heat travels to the rejection end of the pipe where a paper heater, roll fuser or other heat sink may be located. The heat is ejected from the rejection end of the pipe by conduction, and the working fluid then condenses and is drawn back to the lamp end by capillary action through the wick.

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