Browse Prior Art Database

Composite Backup Pad

IP.com Disclosure Number: IPCOM000051894D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Garrison, SP: AUTHOR

Abstract

A composite backup pad for a picker/separator of the roll wave generato type is shown and described. This backup pad provides improved shingling as the stack is depleted. In addition, it can sustain repeated contact with the picker/separator device in the absence of sheets without adversely affecting performance.

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Composite Backup Pad

A composite backup pad for a picker/separator of the roll wave generato type is shown and described. This backup pad provides improved shingling as the stack is depleted. In addition, it can sustain repeated contact with the picker/separator device in the absence of sheets without adversely affecting performance.

In prior-art sheet feed devices employing picker/separators of the roll wave generator type, ""no paper'' conditions are usually determined externally. In the sheet-feeding device in which the present backup pad is used, ""out of paper'' condition is determined by initiating a feed cycle and checking the paper path status after a predetermined time lapse. As a result, the picker/separator contacts the backup pad directly. Therefore, wear resistance is a desirable quality when high volume use is anticipated.

A roll wave generator picker/separator in a top feed sheet handler requires a resiliency in a backup pad to insure proper shingling of the bottommost sheets in the stack. The present device provides this function as well by embedding a highly wear-resistant portion in the resilient backup pad.

In the figure, backup pad 2 includes resilient material having a wear-resistant insert 4. A portion of picker/separator 6 is shown having free pre-rolling members 8 evenly spaced about its periphery. The picker/separator roller rotates in the direction of arrows 10. Arrow 12 shows the line of contact of the picker/separator rollers 8 on pad...