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Contamination Traps for Belt Type Systems

IP.com Disclosure Number: IPCOM000048309D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Wilson, CC: AUTHOR

Abstract

Particles between the inner surface of a closed-loop belt and the belt supporting capstan surfaces are removed by grooves in the belt path on its interior side. Contamination removal is augmented by the inclusion of a magnet in the interior of the groove. The arrangement is particularly useful for copier/duplicators employing belt-type photoconductors to remove contamination and magnetic particles from under the belt.

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Contamination Traps for Belt Type Systems

Particles between the inner surface of a closed-loop belt and the belt supporting capstan surfaces are removed by grooves in the belt path on its interior side. Contamination removal is augmented by the inclusion of a magnet in the interior of the groove. The arrangement is particularly useful for copier/duplicators employing belt-type photoconductors to remove contamination and magnetic particles from under the belt.

The copier shown uses a conventional closed-loop photoconductive surfaced belt 10 which is imaged at 12 after charging at corona 14. The belt continues past developer 15, to a copy sheet transfer station 16 which can be configured as a roller transfer, a corona transfer, or the like. The copy sheet paper path is indicated generally by arrows 17. Belt 10 is cleaned by cleaner unit 18. Shoe 20 is biased by spring 21 to apply outwardly directed tension to belt 10. The copier can be of any conventional design including two-cycle copiers wherein developer 15 operates as both a cleaner and a developer with cleaner 18 being omitted, and so forth. Also, the photoconductor belt 10 can take the form of a removable sleeve associated with a drum.

The capstan elements including shoe 20 and guide plates 22 and 24 include elongated grooves 25, 26 and 27, respectively, extending transversely across the interior of belt 10. Any beads straying beneath photoconductor belt 10 are quickly captured by these grooves. Traps 25, 26...