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IMPROVED LIQUID DEVELOPER DISPENSING MEMBER FOR XEROGRAPHIC APPARATUS

IP.com Disclosure Number: IPCOM000023864D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 291K

Publishing Venue

Xerox Disclosure Journal

Abstract

Development of electrostatic images with liquid developer is well known and is described in detail in U.S. Patent 3,084,043. Essential to such liquid development as described therein is a fluid-dispensingmember adapted to receive a quantity of fluid developer, such as ink, from conventional applicator means. The dispensing member must be adapted to hold the ink in a stable manner until it is subjected to the attractive forces of an electrostatic image, whereupon the ink or liquid developer is dispensed in conformity with that image. To properly receive and hold

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XEROX DISCLOSURE JOURNAL

IMPROVED LIQUID DEVELOPER Proposed Classification DISPENSING MEMBER FOR XERO~ U.S. CL 355/10 GRAPHIC APPA~ATIJS Int. CL G03g 15/10

John B. Wells

Development of electrostatic images with liquid developer is well known and is

described in detail in U.S. Patent 3,084,043. Essential to such liquid development

as described therein is a fluid~dispensingmember adapted to receive a quantity of fluid developer, such as ink, from conventional applicator means. The dispensing member must be adapted to hold the ink in a stable manner until it is subjected to the attractive forces of an electrostatic image, whereupon the ink or liquid developer is dispensed in conformity with that image. To properly receive and hold

liquid developer in this manner, it has been found that the outer surface of the dispensing member should have a pattern of closely spaced grooves, embossments or recesses, sometimes referred to as pockets. These are similar to the gravure

members used in the printing industry.

This disclosure relates to an improvement in the liquid developer fluid~dispensing member wherein the fluid~dispensing member having the patterned surface is porous and comprises means for supplying a fluid medium from the core to the patterned surface of the dispensing member.

In a preferred embodiment, imaging fluid without particles, i.e., the carrier of the

liquid developer, is applied to the core of the dispensing member, The recesses, grooves, embossments or p...