Browse Prior Art Database

XEROGRAPHIC LIQUID DEVELOPMENT SYSTEM

IP.com Disclosure Number: IPCOM000023782D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 223K

Publishing Venue

Xerox Disclosure Journal

Abstract

A development system of a xerographic copier includes an applicator roil for applying liquid developer to a latent image on the surface of a photoreceptor drum. The applicator roll is biased against the photoreceptor and is movable towards and away from the photoreceptor (so that it may be disengaged from the drum during shut-down) without interrupting the drive to the applicator roll by the mechanism illustrated. Pulley 11 is mounted on the photoreceptor drum axle and pulley 13 is mounted on the applicator roll axle, Their ratios are chosen to synchronize the surface speeds of the photoreceptor and applicator. An endless drive belt 12 passes over pulleys 11 and 13 and a pair of pulleys 14 which are spaced further from the photoreceptor drum than is the applicator roll and are connected together by a yoke 15. The pulleys 14 are movable together by link 16 along lines parallel to the

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XEROX DISCLOSURE JOURNAL

XEROGRAPHIC LIQUID DEVELOPMENT

SYSTEM Roger Derek Masham

Proposed Classification
U.S. Cl. 96/1.1

mt. CI. G03g 16/00

A development system of a xerographic copier includes an applicator roil for applying liquid developer to a latent image on the surface of a photoreceptor drum.

The applicator roll is biased against the photoreceptor and is movable towards and away from the photoreceptor (so that it may be disengaged from the drum during shut-down) without interrupting the drive to the applicator roll by the mechanism illustrated. Pulley 11 is mounted on the photoreceptor drum axle and pulley 13 is mounted on the applicator roll axle, Their ratios are chosen to synchronize the surface speeds of the photoreceptor and applicator. An endless drive belt 12 passes over pulleys 11 and 13 and a pair of pulleys 14 which are spaced further from the photoreceptor drum than is the applicator roll and are connected together by a yoke 15. The pulleys 14 are movable together by link 16 along lines parallel to the

radially extending line followed by the axis of the applicator roll between its engaged and disengaged positions. This drive system permits cam ming the

applicator on and off the photoreceptor while the relative angular velocity between the photoreceptor and the applicator roll remains constant as also (during contact)

does the nip pressure at the applicator roll/photoreceptor interface. Further,

starting and stopping of the applicator roll rotary...