Browse Prior Art Database

Sheet Separator

IP.com Disclosure Number: IPCOM000083505D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Froula, JD: AUTHOR

Abstract

This sheet separator reliably separates only the top sheet of a stack, using a picker roller, and allows the conventional restraint and separator rollers to be eliminated.

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 100% of the total text.

Page 1 of 2

Sheet Separator

This sheet separator reliably separates only the top sheet of a stack, using a picker roller, and allows the conventional restraint and separator rollers to be eliminated.

A spring loaded, or hinged and weighted, restraint 10, having a high coefficient of friction pressure pad 11, is mounted so as to press lightly (less than 100 grams) and obliquely against the top rear edge of a stack of paper sheets
12. Pad 11 spans a short distance in the approximate middle of the sheet's back edge, and is located directly behind picker roller 13. This picker roller rotates about axis 14, in a counterclockwise direction.

As roller 13 accelerates from rest, the top sheet in the stack is jerked out from under pad 11 and fed into paper path 15. Pad 11 immediately restores onto the back edge of the second sheet, preventing this sheet from feeding along with the top sheet.

The sheet stack is positioned on an elevator tray, not shown, and the height of its top sheet is maintained as shown, by a sheet sensor, not shown.

In the event that more than one picked roller is positioned along axis 14, then pad 11 is preferably centered on this plurality of rollers.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]