Browse Prior Art Database

PREVENT DEVELOPER HOUSING SHORT CIRCUITS

IP.com Disclosure Number: IPCOM000023681D
Original Publication Date: 1978-Oct-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 160K

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrophotographic printing machine, the developer housing is electrically biased to a suitable potential higher than the background voltage on the photoconductive drum. Generally, the toner particles are made from a heat-settable, thermo-plasticmaterial with the carrier granules being made from a conductive material, Occasionally, the conductive carrier granules will short circuit the developer housing, In order to obviate this problem, it is desirable to interpose a relay in series with the voltage source electrically biasing the developer housing. The relay is activated when the devel-oper housing is in the inoperative mode,

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XEROX DISCLOSURE JOURNAL

PREVENT DEVELOPER HOUSING SHORT Proposed Classification
CIRCUITS U,S, Cl. 118/647
Stephen J. Wenthe, Jr. Int, Cl~ G03g 15/06

In an electrophotographic printing machine, the developer
housing is electrically biased to a suitable potential higher
than the background voltage on the photoconductive drum.
Generally, the toner particles are made from a heat~settable,
thermo~plasticmaterial with the carrier granules being made
from a conductive material, Occasionally, the conductive
carrier granules will short circuit the developer housing, In
order to obviate this problem, it is desirable to interpose a
relay in series with the voltage source electrically biasing
the developer housing. The relay is activated when the devel~
oper housing is in the inoperative mode,

Volume 3 Number 5 September/October 1978 293

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                 XEROX DISCLOSURE JOURNAL
294 Volume 3 Number 5 September/October 1978

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