Browse Prior Art Database

EDGE FORCE SHEET SEPARATING SYSTEM

IP.com Disclosure Number: IPCOM000025089D
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 84K

Publishing Venue

Xerox Disclosure Journal

Abstract

Generally, for the sheet retarding function, friction retard sheet separation systems require retard member to sheet coefficient to be higher than the sheet to sheet coefficient of friction but not high enough to prevent feeding of one sheet past the retard member. This places a significant constraint on the latitude of the system, especially considering contamination and material manufacturing vari-ations.

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XEROX DISCLOSURE JOURNAL

EDGE FORCE SHEET SEPARATING SYSTEM John Maksymiak U.S. Cl. 271/182 Robert Rebres
Gerhard Kobus

Proposed Classification

Int. Cl. B65h 29/68

FIG. 2

32 - 40

FIG. 3

FIG. 4

FIG. 5

Volume 8 Number 4 July/August 1983 315

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

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EDGE FORCE SHEET SEPARATING SYSTEM (Con'd),

Generally, for the sheet retarding function, friction retard sheet separation systems require retard member to sheet coefficient to be higher than the sheet to sheet coefficient of friction but not high enough to prevent feeding of one sheet past the retard member. This places a significant constraint on the latitude of the system, especially considering contamination and material manufacturing vari- ations.

Retard members that relieve the mentioned constraints are shown in Figures 1 through 5 and allow the use of relatively stiffer materials to improve abrasion resistance. The retard member modifications include providing slits perpendicular to sheet travel and corrugating the retard members such that the corrugations provide a stop along the front edge of multi-fed sheets to aid the retard friction surface in holding multiple sheets from being fed through the retard nip.

In Figure 1, a retard pad 12 is shown having one or more slits 13 in it periphery immediately adjacent feed belt 15. Figure 2 shows a retard pad 20 that includes a plurality of grooves 21 in the snubbing area of the pad. A retard pad 30 in Figure 3 h...