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LIQUID INK METERING ROLL GAP ADJUSTMENT DEVICE

IP.com Disclosure Number: IPCOM000025639D
Original Publication Date: 1986-Dec-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrophotographic printing machine, the electrostatic latent image may be developed by a liquid ink. When a liquid ink is employed, it is necessary to precisely adjust the nap between the metering roll and the photoconductive surface. The metering roll advances the liquid ink closely adjacent to the electrostatic latent image recorded on the photoconductive surface. This may be achieved by a micrometer having a iardened steel wedge located at one end thereof. The steel wedge engages a hardened follower which is in contact with the metering roll. The follnwer moves in a direction normal to the direction of movement of the wedge. As the micrometer is advanced or retracted, the wedge advances or retracts and moves the follower, which, in turn, moves the metering roll precise increments in a direction normal to the direction of movement of the micrometer. This allows the gap between the metering roll and the photoconductive surface to be precisely established.