Browse Prior Art Database

TWO-WAY FRICTION BACKSTOP

IP.com Disclosure Number: IPCOM000027373D
Original Publication Date: 1996-Jun-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 79K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a two-way fiiction backstop which prevents the lead edge of a copy sheet from sliding up a backstop in a catch tray. The proposed backstop offers limited resistance to the copy sheet allowing it to slide down and form a stack. The backstop uses the deformation of the copy sheet to obtain two different fiction characteristics at sheet's lead edge.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

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TWO-WAY FRICTION BACKSTOP Daniel L. Carter

Proposed Classification
U. S. C1.355/322 ht. C1. G03G 21/00

/",

10

XEROX DISCLOSURE JOURNAL, - Vol. 21, No. 3 May/June 1996 24 1

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

Page 2 of 4

TWO-WAY FRICTION BACKSTOP (CONT'D)

16

16

FIG. 2A

FIG. 28

FIG. 2C

242 XEROX DISCLOSURE JOURNAL - Vol. 2 1, No. 3 May/June 1996

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

Page 3 of 4

TWO-WAY FRICTION BACKSTOP (CONT'D)

Proposed is a two-way fiiction backstop which prevents the lead edge of a copy sheet from sliding up a backstop in a catch tray. The proposed backstop offers limited resistance to the copy sheet allowing it to slide down and form a stack. The backstop uses the deformation of the copy sheet to obtain two different fiction characteristics at sheet's lead edge.

Figures 1 (top view) and Figure 2 (side view) illustrate the action 12 and reaction 14 of a copy sheet entering a catch tray (not shown). The catch tray has a backstop 16 with at least two high fiiction slides 18 and at least one low fiction slide 20 mounted thereon.
The distance 22 between slides 18 and 20 (Fig. 2c) is approximately 4 millimeters for a 20# copy sheet having the dimensions of 11 X 17 inches.

Referring to Figures la and 2a, copy sheet 10 enters the catch tray in a direction indicated by arrow 12. The lead edge of copy sheet 10 contacts the high fiiction slides 18 and deforms into a bowed shape (Fig....