Browse Prior Art Database

Photoconductor Heater Control

IP.com Disclosure Number: IPCOM000086387D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Huffman, RW: AUTHOR

Abstract

In a xerographic copier of the type shown in U. S. Patent 3,588,242, it is sometimes desirable to provide a heater 10 within photoconductor drum 11. This heater is on/off energized by temperature controller 12 whenever the copier is in an off state, as it usually is overnight in an office environment. During the office day, the temperature controller can energize this heater 10 only when fuser 13 is not energized. Heater energization is temperature controlled by temperature sensor 14 to maintain a temperature of, for example 100 degrees F, within drum 11.

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Photoconductor Heater Control

In a xerographic copier of the type shown in U. S. Patent 3,588,242, it is sometimes desirable to provide a heater 10 within photoconductor drum 11. This heater is on/off energized by temperature controller 12 whenever the copier is in an off state, as it usually is overnight in an office environment. During the office day, the temperature controller can energize this heater 10 only when fuser 13 is not energized. Heater energization is temperature controlled by temperature sensor 14 to maintain a temperature of, for example 100 degrees F, within drum
11.

In addition, humidity sensor 15 is provided and is operable to increase the set-point temperature of the temperature controller 12 from 100 degrees F to 120 degrees F so long as a high-humidity condition exists.

The above-mentioned temperature and/or humidity sensor may be positioned within drum 11, or within the copier's housing.

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