Browse Prior Art Database

Drum Seal, Incrementing Photoconductor Drum

IP.com Disclosure Number: IPCOM000059861D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Gudgel, WL: AUTHOR [+4]

Abstract

A copier or printer using an incrementing photoconductor drum and a scraper blade cleaner requires a very tight seal and smooth profile. The disclosed seal with its very thin, spring-loaded edge provides both and also permits a narrow seal design. The seal is raised for photoconductor advance. The seal assembly consists of a very thin, tempered metal blade 10 with a cylindrical shape bonded to a semirigid support beam 11. The seal assembly is raised while the photoconductor 12 is installed or incremented over the surface of the drum 13. When the seal is lowered, the seal edges are forced against the photoconductor by an external force from the pull-down rods 14. The edges of the seal flex, thereby conforming to minor variations in the drum surface.

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Drum Seal, Incrementing Photoconductor Drum

A copier or printer using an incrementing photoconductor drum and a scraper blade cleaner requires a very tight seal and smooth profile. The disclosed seal with its very thin, spring-loaded edge provides both and also permits a narrow seal design. The seal is raised for photoconductor advance. The seal assembly consists of a very thin, tempered metal blade 10 with a cylindrical shape bonded to a semirigid support beam 11. The seal assembly is raised while the photoconductor 12 is installed or incremented over the surface of the drum 13. When the seal is lowered, the seal edges are forced against the photoconductor by an external force from the pull-down rods 14. The edges of the seal flex, thereby conforming to minor variations in the drum surface. The initial curvature of the thin blade 10 is such that in the forced down state, the curvature of the drum 13 is approximated. The resulting discontinuity at the drum surface is minimal. The design prevents toner from entering a photoconductor drum operating with a scraper blade cleaner.

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