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SKEWED DOCTOR BLADE FOR CLEANING LIQUID INK ON A PHOTORECEPTOR SURFACE

IP.com Disclosure Number: IPCOM000025735D
Original Publication Date: 1987-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrophotographic printing machine wherein an electrostatic latent image is developed with a liquid developer material, residual liquid developer material must be cleaned from the photoconductive surface . With a residual liquid developer material adhering to the photoconductive surface, friction between a cleaning blade and the surface is reduced. This is advantageous to the geometry in that it can be set easily and the parameters have a wide latitude. The cleaning blade may be skewed, i.e. at an acute angle, with respect to the photoconductive surface. The free end of the cleaning blade is positioned in contact with a seal. An open ended pipe is located above the blade in the region of the free end thereof adjacent the seal. The pipe is connected to a vacuum pump. In this way, the opening in the pipe serves as a suction port to remove the residual liquid developer collected on the surface of the cleaning blade opposed to the surface thereof adjacent the photoconductive surface. In the event there is insufficient liquid to lubricate the cleaning blade, liquid may be injected in front of the blade, as required.

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XEROX DISCLOSURE JOURNAL

SKEWED DOCTOR BLADE FOR CLEANING LIQUID INK ON A PHOTORECEPTOR SURFACE Nero R. Lindblad
Henry R. Till
Reginald Tift

Proposed Classification

US. C1.355/10 Int. C1. G03g 15/10

In an electrophotographic printing machine wherein an electrostatic latent image is developed with a liquid developer material, residual liquid developer material must be cleaned from the photoconductive surface . With a residual liquid developer material adhering to the photoconductive surface, friction between a cleaning blade and the surface is reduced. This is advantageous to the geometry in that it can be set easily and the parameters have a wide latitude. The cleaning blade may be skewed, i.e. at an acute angle, with respect to the photoconductive surface. The free end of the cleaning blade is positioned in contact with a seal. An open ended pipe is located above the blade in the region of the free end thereof adjacent the seal. The pipe is connected to a vacuum pump. In this way, the opening in the pipe serves as a suction port to remove the residual liquid developer collected on the surface of the cleaning blade opposed to the surface thereof adjacent the photoconductive surface. In the event there is insufficient liquid to lubricate the cleaning blade, liquid may be injected in front of the blade, as required.

Volume 12 Number 4 July/August 1987 203

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