Browse Prior Art Database

FRICTION RETARD FEEDER WITH A COMPOSITE FEED ELEMENT

IP.com Disclosure Number: IPCOM000026701D
Original Publication Date: 1993-Apr-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 4 page(s) / 155K

Publishing Venue

Xerox Disclosure Journal

Abstract

A composite friction feed roll that includes one material which feeds fresh paper well and another material which reliably feeds paper which has passed through fusing and has oil on its imaged surface is disclosed. Such a roll will feed duplex and fresh paper or inserts equally reliably. Suitable material combinations for forming the composite feed roll include: silicone rubber which handles fused copies with ease, but has limited life feeding fresh or virgin paper because it collects fibers from fresh paper, and isoprene which is long lived handling fresh paper, but is rapidly contaminated by fuser oil. In a steady state condition, silicone regions will be primarily active in feeding duplexed paper while the isoprene regions become oil contaminated, while in the plain paper feeding case, isoprene regions will be primarily responsible for feeding while the silicone regions become paper debris contaminated. These material composites offer increased feeder latitude due to stabilization of a major design parameter, that is the feed element coefficient.

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 54% of the total text.

Page 1 of 4

XEROX DISCLOSURE JOURNAL

FRICTION RETARD FEEDER WITH A COMPOSITE FEED ELEMENT Robert P. Rebres
Janice F. Szocki Brooks
Gerald M. Garavuso
Youti Kuo
David J. Lemon

Proposed Classification

U.S. C1.355/313

Int. C1. G03g 21/00

I V

FIG. I

XEROX DISCLOSURE JOURNAL - Vol. 18, No. 2 MarcWAprill993 195

[This page contains 1 picture or other non-text object]

Page 2 of 4

FRICTION RETARD FEEDER WITH A COMPOSITE FEED ELEMENT (Cont'd)

FIG. 2

196 XEROX DISCLOSURE JOURNAL - Vol. 18, No. 2 MarcWApril 1993

[This page contains 1 picture or other non-text object]

Page 3 of 4

FRICTION RETARD FEEDER WITH A COMPOSITE FEED ELEMENT (Cont'd)

FIG. 3

XEROX DISCLOSURE JOURNAL - Vol. 18, No. 2 MarcWAprill993 197

[This page contains 1 picture or other non-text object]

Page 4 of 4

FRICTION RETARD FEEDER WITH A COMPOSITE FEED ELEMENT (Cont'd)

A composite friction feed roll that includes one material which feeds fresh paper well and another material which reliably feeds paper which has passed through fusing and has oil on its imaged surface is disclosed. Such a roll will feed duplex and fresh paper or inserts equally reliably. Suitable material combinations for forming the composite feed roll include: silicone rubber which handles fused copies with ease, but has limited life feeding fresh or virgin paper because it collects fibers from fresh paper, and isoprene which is long lived handling fresh paper, but is rapidly contaminated by fuser oil. In a steady state condition, silicone regions will be primarily active in feeding duplexed paper while the isoprene regions become oil contaminated, while in the plain paper feeding case, isoprene regions will be primarily responsible for feeding while the silicone regions become paper debris contaminated. These material composites offer increased feeder latitude due to stabilization of a major design parameter, that is the feed element coefficient.

A friction retard feeder system that employs the aforementioned composite friction feed roll is efficient in feeding both virgin and simplexed sheets (sheets with an image on one side). The system minimizes the...