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IMPROVED DEVELOPER HOUSING FOR AN ELECTROPHOTOGRAPHIC COLOR COPIER

IP.com Disclosure Number: IPCOM000025184D
Original Publication Date: 1983-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 44K

Publishing Venue

Xerox Disclosure Journal

Abstract

A filter is placed in a wall of each developer housing in an electrophotographic color copier such as one using magnetic brush development. A vacuum source is connected by a conduit to each filter so that a negative pressure is applied inside the developer housings. This, in turn, causes the powder cloud formed at the development zones between the magnetic brushes and photoconductive imaging member to be pulled back into the respective housings. Therefore, the powder cloud is contained inside the developer housing, reducing contamination within the copier, and assisting in background reduction in the copies produced by the color copier. To prevent excessive flow of toner from the repIenishment toner cartridges into the developer housing, seals are added to the cartridges to reduce the flow from them.

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XEROX DISCLOSURE JOURNAL

IMPROVED DEVELOPER HOUSING FOR AN ELECTROPHOTOGRAPHIC COLOR COPIER George A. Muller

Proposed Classification
U.S. Cl. 355/4 Int. C1. G03g 15/00

A filter is placed in a wall of each developer housing in an electrophotographic color copier such as one using magnetic brush development. A vacuum source is connected by a conduit to each filter so that a negative pressure is applied inside the developer housings. This, in turn, causes the powder cloud formed at the development zones between the magnetic brushes and photoconductive imaging member to be pulled back into the respective housings. Therefore, the powder cloud is contained inside the developer housing, reducing contamination within the copier, and assisting in background reduction in the copies produced by the color copier. To prevent excessive flow of toner from the repIenishment toner cartridges into the developer housing, seals are added to the cartridges to reduce the flow from them.

Volume 8 Number 6 November/December 1983 515

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516

     XEROX DISCLOSURE JOURNAL Volume 8 Number 6 November/December 1983

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