Browse Prior Art Database

EXCESS LIQUID CARRIER REMOVAL APPARATUS

IP.com Disclosure Number: IPCOM000026398D
Original Publication Date: 1991-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 86K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an electrophotographic printing machine in which an electrostatic latent image recorded on a moving photoconductive member is developed with a liquid developer material having a liquid carrier and toner particles to form a toner particle image and means for removing excess liquid carrier. An electrically biased electrode 1 having a slit 2 therein coupled to a vacuum pump 3 removes, through the slit 2, liquid carrier 8 from the gap 4 between the electrode 1 and photoconductive member 5. After excess liquid carrier 8 is so removed, the toner particles 7 and residual intersitial liquid carrier 8 are transferred from the photoconductive member 5 to a sheet of support material (not shown). The electrical bias on the electrode 1 generates an electrical field sufficient to maintain the toner particle image 7 substantially undisturbed as air 6 and liquid carrier 8 are withdrawn from the gap 4.

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XEROX DISCLOSURE JOURNAL

EXCESS LIQUID CARRIER Proposed Classification REMOVAL APPARATUS U.S. C1.355/256 Robert W. Gundlach Int. C1. G03g 15/10

17 / 7

\ I -/ I

8 t I\

1 3 2 8

FIG. I

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 5 SeptembedOctober 1991 315

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EXCESS LIQUID CARRIER REMOVAL APPARATUS(Cont'd)

Disclosed is an electrophotographic printing machine in which an electrostatic latent image recorded on a moving photoconductive member is developed with a liquid developer material having a liquid carrier and toner particles to form a toner particle image and means for removing excess liquid carrier. An electrically biased electrode 1 having a slit 2 therein coupled to a vacuum pump 3 removes, through the slit 2, liquid carrier 8 from the gap 4 between the electrode 1 and photoconductive member 5. After excess liquid carrier 8 is so removed, the toner particles 7 and residual intersitial liquid carrier 8 are transferred from the photoconductive member 5 to a sheet of support material (not shown). The electrical bias on the electrode 1 generates an electrical field sufficient to maintain the toner particle image 7 substantially undisturbed as air 6 and liquid carrier 8 are withdrawn from the gap 4.

316 XEROX DISCLOSURE JOURNAL - Vol. 16, No. 5 September/October 1991

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