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Moving Backup Belts for Semiautomatic Document Feed

IP.com Disclosure Number: IPCOM000077268D
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Craft, JA: AUTHOR [+2]

Abstract

To ensure the feeding of folded and creased documents 10 into the document exposure station with a semiautomatic document feed apparatus, it is necessary to engage the original document and urge it into a position against an aligning stop. This is accomplished by feed belts 12 which are of a rubber or similar type material to frictionally engage the back surface of the document. The feed belts 12 by themselves do not adequately ensure feeding, because of the low pressure exerted by the belt 12 against the document 10. It has been found that a backing member of some sort is generally necessary to ensure positive feed, and the backing member must be such that it likewise provides an urging force to high points 14 on the document.

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Moving Backup Belts for Semiautomatic Document Feed

To ensure the feeding of folded and creased documents 10 into the document exposure station with a semiautomatic document feed apparatus, it is necessary to engage the original document and urge it into a position against an aligning stop. This is accomplished by feed belts 12 which are of a rubber or similar type material to frictionally engage the back surface of the document. The feed belts 12 by themselves do not adequately ensure feeding, because of the low pressure exerted by the belt 12 against the document 10. It has been found that a backing member of some sort is generally necessary to ensure positive feed, and the backing member must be such that it likewise provides an urging force to high points 14 on the document.

Backup belts 16 which are powered to move in synchronized relationship to the feed belts 12 are positioned within the loop of the feed belts 12 and in abutting relation at the point where the feed belts 12 are adjacent to the document plane. The backup belts 16, by moving at a speed the same as the feed belts 12, provide an additional urging force toward the direction of feed by engaging the high points 14, the wrinkles or creases in the document, and at the same time providing a normal assisting force to the relatively narrow feed belts of the semiautomatic document feed mechanism.

A single wide backup belt has been shown to not provide sufficient force and sufficient urging to reliably...