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Photoconductor Drum Disclosure Number: IPCOM000089216D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 33K

Publishing Venue


Related People

Alderson, JC: AUTHOR [+4]


Forced air cooling of a copier's photoconductor drum prolongs the life of the photoconductor.

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Photoconductor Drum

Forced air cooling of a copier's photoconductor drum prolongs the life of the photoconductor.

In this electrophotographic copier a rotating drum's exterior surface is covered with a working section of a web photoconductor. The drum includes two such working sections 10 and 11. Each section is periodically replaced by spooling a new section off supply spool 12, and reeling up the prior working section on takeup spool 13.

It is desirable to maintain the photoconductor's working sections 10 and 11 heated to about 100 Degrees F for optimum performance. Electrical heating blankets 14 are used for this purpose. However, the photoconductor resident on supply spools 12 may overheat and experience reduced life.

One method of cooling involves the use of a thermally insulating shield 15 around both supply spools 12. This shield provides an air space 16 through which cooling air is forced.

Another photoconductor cooling method involves the use of an insulating blanket 17 to create an air space 18 through which cooling air is forced.

Such airflow sources can be mounted either internally or externally of the rotating drum.

An additional improvement is the use of heat insulating end plates (not shown) for the photoconductor drum. These end plates prevent blanket generated heat from eventually reaching the photoconductor stored on supply spools 12.


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