Browse Prior Art Database

IMPROVED LIQUID DEVELOPER APPLICATOR FOR XEROGRAPHIC APPARATUS

IP.com Disclosure Number: IPCOM000023863D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 275K

Publishing Venue

Xerox Disclosure Journal

Abstract

The development of electrostatic images with liquid developer is well known and is described in detail in U.S. Patent 3,084,043. Essential to the liquid development technique described therein is a fluid dispensing member adapted to receive a quantity of liquid developer from an applicator, The dispensing member must he

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XEROX DISCLOSURE JOURNAL

IMPROVED LIQUID DEVELOPER Proposed Classification APPLICATOR FOR X~OGRAPNIC U.S. Cl. 355/10

APPARATUS mt. Cl. G03g 15/10

3ohn B. Wells

The development of electrostatic images with liquid developer is well known and is described in detail in U.S. Patent 3,084,043. Essential to the liquid development

technique described therein is a fluid dispensing member adapted to receive a quantity of liquid developer from an applicator, The dispensing member must he

adapted to hold the ink or liquid developer 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

ink in this manner, it has been found that the outer surface of the dispensing member should have a microscopic pattern of closely spaced grooves, embossments, recesses or pockets. These pockets are adapted to hold minute quantities of ink by capillary attraction.

Another typical xerographic apparatus for developing images by liquid developer is shown in U.S. Patent 3,980,404. The apparatus includes a reservoir holding a quantity of liquid ink or developer and a rotatable applicator roller having a patterned, fluid-dispensing surface containing closely spaced grooves, em boss- ments, recesses or pockets disposed between a feed roller and the imaging surface (photoconductor). Upon rotation of the feed roller, liquid developer is transferred

from th...