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INKING SYSTEM FOR ELECTROSTATIC COPYING PROCESS

IP.com Disclosure Number: IPCOM000023500D
Original Publication Date: 1977-Dec-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 368K

Publishing Venue

Xerox Disclosure Journal

Abstract

An inking member having a hollow core cylinder made of ink-wettable porous material coated with a thin layer of ink non-wettable porous material is employed in a liquid development environment for applying ink to a charge-bearing surface. Ink is fed from the core of the cylinder to the ink-wettable material of the cylinder. The ink advances by capillary pene-tration through the ink-wettable porous material of the cylinder to the interface between the ink-wettable porous material and the coating of ink-non-wettable material. When the ink reaches the interface, it does not penetrate or advance into the coating of ink-wettable material because the coating material is not wetted by the ink, When a charge-bearing surface such as a photoconductor, an interposition web or other charge-bearing member contacts the porous inking mem-ber, the force of the charge exerted upon the ink pulls the ink through the porous coating of ink-non-wettable material in the areas of the charge, and the ink deposits upon the charged surface in conformance to the charges, The ink may be retained on the developed surface or transferred to another

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

INKING SYSTEM FOR ELECTROSTATIC
COPYING PROCESS
Chin H. Lu

Proposed Classification
U.S. Cl. 118/661
Int, Cl. G03g 15/10

2

An inking member having a hollow core cylinder made of ink-
wettable porous material coated with a thin layer of ink non-
wettable porous material is employed in a liquid development
environment for applying ink to a charge-bearing surface. Ink
is fed from the core of the cylinder to the ink-wettable
material of the cylinder. The ink advances by capillary pene-
tration through the ink-wettable porous material of the
cylinder to the interface between the ink-wettable porous
material and the coating of ink-non-wettable material. When
the ink reaches the interface, it does not penetrate or
advance into the coating of ink-wettable material because the
coating material is not wetted by the ink, When a charge-
bearing surface such as a photoconductor, an interposition web
or other charge-bearing member contacts the porous inking mem-
ber, the force of the charge exerted upon the ink pulls the ink
through the porous coating of ink-non-wettable material in the
areas of the charge, and the ink deposits upon the charged
surface in conformance to the charges, The ink may be
retained on the developed surface or transferred to another

substrate.

8

Volume 2 Number 6 November/December 1977 39

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

Page 2 of 2

INKING SYSTEM FOR ELECTROSTATIC COPYING PROCESS (Cont?d)

In the drawing, inking member 10 is shown in contact with
photoreceptor 1. The members may be advanced by suitabl...