Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

ELECTRICALLY BIASED TRANSFER APPARATUS

IP.com Disclosure Number: IPCOM000023595D
Original Publication Date: 1978-Jun-30
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 207K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an apparatus for transferring charged particles from an original support to a transfer support which includes a backing electrode and an electrically biased transfer roll. The original support and transfer support are passed between the backing electrode and the bias transfer roll. The bias transfer roll includes a variable-resistivity-with-pressure material which has a low resistivity in the nip area and a high resistivity in the pre-nip and post-nip areas, allowing the use of high voltage transfer fields while avoiding pre-nip air breakdown and air ionization.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

ELECTRICALLY BIASED TRANSFER - Proposed Classification
APPARATUS U.S. Cl. 96/1.4
David E. Damouth Int. Cl. G03g 13/14

Disclosed is an apparatus for transferring charged particles
from an original support to a transfer support which includes
a backing electrode and an electrically biased transfer roll.
The original support and transfer support are passed between
the backing electrode and the bias transfer roll. The bias
transfer roll includes a variable-resistivity-with-pressure
material which has a low resistivity in the nip area and a high
resistivity in the pre-nip and post-nip areas, allowing the
use of high voltage transfer fields while avoiding pre-nip air
breakdown and air ionization.

Materials that can be used as the variable resistivity coating
include, for yample, those materials having a resistivity o
from about 10 ohm cm. in an uncompressed state to about 10
ohm cm. in a slightly compressed state. Typical examples of
such materials that are useful include conductive composite
elastomers such as rubber, i.e., a silicone rubber filled with
a small amount of finely divided conductive particles such as
silver, copper or nickel.

Volume 3 Number 3 May/June 1978 135

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

Page 2 of 2

8L61 aunf/A2N E iequrn~ E 9UmIQA 9ET

~IVNUflOf SUflSO'IDSIC XOd2X

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