Browse Prior Art Database

CLEANING BLADE WEAR LIFE EXTENSION

IP.com Disclosure Number: IPCOM000026401D
Original Publication Date: 1991-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 72K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrostatic photoreceptor toner cleaning blade composition comprising an elastomeric matrix containing inorganic filler particulates homogeneously dispersed therein is disclosed. The cleaning blade is fabricated by using a low glass transition thermoset polyurethane whereupon inorganic particulates such as mirco-crystalline silica, fine glass spheres, Mica, Wollastonite, glass fibers, and Basalt fibers are cross-linked by chemical reaction between a polyol prepolymer and a di-isocyanate cross-linker, to form a 3-dimensional cross-linked network.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 77% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

CLEANING BLADE WEAR LIFE EXTENSION U.S. C1.355/299 Robert C. U. Yu
Nero R. Lindblad

Proposed Classification

Int. C1. G03g 21/00

An electrostatic photoreceptor toner cleaning blade composition comprising an elastomeric matrix containing inorganic filler particulates homogeneously dispersed therein is disclosed.

The cleaning blade is fabricated by using a low glass transition thermoset polyurethane whereupon inorganic particulates such as mirco-crystalline silica, fine glass spheres, Mica, Wollastonite, glass fibers, and Basalt fibers are cross-linked by chemical reaction between a polyol prepolymer and a di- isocyanate cross-linker, to form a 3-dimensional cross-linked network.

The present cleaning blade: reduces the fictional contact between a cleaning blade and an imaging surface; provides improved resistance to fatigue cracking; and provides a cleaning blade having substantial mechanical stability and extended service life.

Various cleaning techniques have been used which may be relevant to certain aspects of the present device are illustrated in the following disclosures:

"Impregnated Poromeric Material Cleaning Blade," Xerox Disclosure Journal, Vol. 1, No. 4, April 1976, p.79 describes a cleaning blade composition of non-woven polyester fibers bound together in polyurethane, for the improvement of abrasion resistance, hardness, resilience, and load bearing capacity.

"Nylon Fiber Reinforcement for Polyurethane Composites," Polymer Comp...