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TRANSFER CHARGE MAINTAINING SYSTEM

IP.com Disclosure Number: IPCOM000023021D
Original Publication Date: 1976-Jun-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 216K

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrostatographic copier 10 in which imaging material is transferred from an image support surface 12 to an overlying copy sheet 26 in a transfer station 32 by electrical transfer charges, the variable leakage conduc- tion of these transfer charges by the copy sheet 26 away from the transfer area to contacting conductive members 30 and 42 changes the available transfer field strength, thus affecting transfer efficiency and quality. Here the conductive members 30 and 42 contacting the copy sheet while it is in the transfer station are electrically con- nected to ground only through a high resistance 33 and 35 whereby the transfer leakage currents through the paper provide a compensatory self-biasing floating voltage on the conductive surfaces which opposes these leakage currents,

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XEROX DISCLOSURE JOURNAL

TRANSFER CHARGE MAINTAINING SYSTEM
Stephen Borostyan

Proposed Classification
U~S. Cl. 355/3R
mt. CL G03g 15/00

/0

In an electrostatographic copier 10 in which imaging
material is transferred from an image support surface 12
to an overlying copy sheet 26 in a transfer station 32 by
electrical transfer charges, the variable leakage conduc-
tion of these transfer charges by the copy sheet 26 away
from the transfer area to contacting conductive members
30 and 42 changes the available transfer field strength,
thus affecting transfer efficiency and quality. Here the
conductive members 30 and 42 contacting the copy sheet
while it is in the transfer station are electrically con-
nected to ground only through a high resistance 33 and 35
whereby the transfer leakage currents through the paper
provide a compensatory self-biasing floating voltage on
the conductive surfaces which opposes these leakage
currents,

Volume 1 Number 6 June 1976 83

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