Browse Prior Art Database

TWO-APPLICATOR LIQUID XEROGRAPHIC DEVELOPMENT

IP.com Disclosure Number: IPCOM000023742D
Original Publication Date: 1978-Dec-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 252K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrostatic charge pattern is developed successively by a liquid developer by means of first and second developer appli-cators 1, 2. The two applicators have recesses, such as grooves, for retaining developer liquid, the charge pattern attracting developer liquid from the recesses of the first applicator. The recesses of the first applicator are of a higher frequency than those of the second applicator, whereby developer liquid is deposited by the first applicator with high fidelity but low volume, The second applicator then increases the depth of the developer liquid on the developed charge pattern so as to provide good image density while maintaining high fidelity. With grooved applicators, the tendency to produce Moire effects is reduced by arranging the grooves at different angles.

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XEROX DISCLOSURE JOURNAL

~LICATORLIUID
XEROGRAPHIC DEVELOPMENT
Kenneth W, Smith

Proposed Classification

U.S~ CL, 96/1
mt. Cl, G03g

An electrostatic charge pattern is developed successively by a
liquid developer by means of first and second developer appli~
cators 1, 2. The two applicators have recesses, such as
grooves, for retaining developer liquid, the charge pattern
attracting developer liquid from the recesses of the first
applicator. The recesses of the first applicator are of a
higher frequency than those of the second applicator, whereby
developer liquid is deposited by the first applicator with
high fidelity but low volume, The second applicator then
increases the depth of the developer liquid on the developed
charge pattern so as to provide good image density while
maintaining high fidelity. With grooved applicators, the
tendency to produce Moire effects is reduced by arranging the
grooves at different angles.

The charge image may be eliminated after the first develop-~
ment, for example by means of a corotron 3 and/or a flood
illuminator 4,

Volume 3 Number 6 November/December 1978 381

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                 XEROX DISCLOSURE JOURNAL
382 Volume 3 Number 6 November/December 1978

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