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REVERSIBLE TRIM BAR

IP.com Disclosure Number: IPCOM000026048D
Original Publication Date: 1989-Dec-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 50K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrophotographic printing machine has an electrostatic latent image recorded on a photoconductive member. The latent image is developed with toner particles to form a toner powder image thereon. Generally, a developer roller transports the toner particles to a development zone closely adjacent to the photoconductive member where the toner particles are attracted from the developer roller to the latent image. The quantity of toner particles being transported on the developer roller is controlled by a trim bar which shears excessive toner particles from the developer roller to maintain the toner particle thickness at an optimum thickness for development of the latent image. After extended use, the trim bar becomes dull and must be replaced. In order to extend the life of the trim bar and reduce costs, opposed edges of the trim bar may be sharpened so that the bar can be reversed after one edge becomes dull. The double edged trim bar is symmetric about its centerline mounting points so that the bar can be flipped end for end to change edges.

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CEROX DISCLOSURE JOURNAL

REVERSIBLE TRIM BAR

Proposed Gerald T. Lioy Classification

U.S. C1.355/200 Int. C1. G03g 15/00

An electrophotographic printing machine has an electrostatic latent image recorded on a photoconductive member. The latent image is developed with toner particles to form a toner powder image thereon. Generally, a developer roller transports the toner particles to a development zone closely adjacent to the photoconductive member where the toner particles are attracted from the developer roller to the latent image. The quantity of toner particles being transported on the developer roller is controlled by a trim bar which shears excessive toner particles from the developer roller to maintain the toner particle thickness at an optimum thickness for development of the latent image. After extended use, the trim bar becomes dull and must be replaced. In order to extend the life of the trim bar and reduce costs, opposed edges of the trim bar may be sharpened so that the bar can be reversed after one edge becomes dull. The double edged trim bar is symmetric about its centerline mounting points so that the bar can be flipped end for end to change edges.

Volume 14 Number 6 November/December 1989 299

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                XEROX DISCLOSURE JOURNAL 300 Volume 14 Number 6 NovembedDecember 1989

[This page contains 1 picture or other non-text object]