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Browse Prior Art Database

Mesh Covered Capstan for Electrophotographic Copiers Using a Belt

IP.com Disclosure Number: IPCOM000045015D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Billman, JW: AUTHOR [+3]

Abstract

The capstan surfaces for supporting a photoconductive (PC) surfaced belt in an electrophotographic copier are covered with an open weave mesh to reduce friction and provide trapping of foreign particles or contaminants.

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Mesh Covered Capstan for Electrophotographic Copiers Using a Belt

The capstan surfaces for supporting a photoconductive (PC) surfaced belt in an electrophotographic copier are covered with an open weave mesh to reduce friction and provide trapping of foreign particles or contaminants.

Capstan 10 provides support for a closed-loop photoconductor belt (not shown) over the external surfaces and includes curved side walls 12 and 14 as well as upper wall 15 which has a transition area indicated generally at 16 along with a shoe 18 spring biased or the like so as to provide outward pressure against the inner surface of the PC belt in normal operation. The belt is driven by a powered roller 20 which rotates in the direction indicated by arrow 21 and is supported by idler roller 22. The PC is fragile and requires protection as it slides from both asperities in the capstan surface and also from foreign particles that may work their way between the PC and the capstan surfaces, such as carrier beads from the developer or the like. This protection is provided for the stationary external surfaces of capstan walls 12, 14, 18 and 18 by open mesh screens 30, 31, 32 and 33, respectively, of metallic or nonmetallic material. An exemplary open mesh screen configuration is shown in the expanded view at 35. The interstitial openings of the screen serve two purposes. First, they mask minor asperities in the capstan extrusion, and secondly, they serve to trap foreign particles, such as...