Browse Prior Art Database

Accumulator Stapler Stack Thickness Indicator

IP.com Disclosure Number: IPCOM000045585D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Colglazier, DF: AUTHOR [+3]

Abstract

This article describes a device which enables a stapling mechanism to staple a stack of sheets based on the thickness of the stack rather than the number of sheets in the stack. In the event that a light weight paper is used, the stapler will be able to accumulate and staple a larger number of sheets.

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Accumulator Stapler Stack Thickness Indicator

This article describes a device which enables a stapling mechanism to staple a stack of sheets based on the thickness of the stack rather than the number of sheets in the stack. In the event that a light weight paper is used, the stapler will be able to accumulate and staple a larger number of sheets.

Present stapler mechanisms associated with a copier/finisher usually are specified to staple some maximum number of sheets. The parameter limiting a stapler is stack thickness rather than number of sheets. If the stack thickness is utilized as a stapler parameter, it is possible to get stapled documents containing more sheets when a lighter paper is used. Also, if relatively heavy paper is used for the copy set, a stack thickness sensor flags an error and prevents a possible jam situation because the copy set was too thick for the accumulator /stapler.

Fig. 1 shows an embodiment of the device. A sensor flag is attached to the accumulator (ACCUM) foot. A sensor assembly 10 is placed at a predetermined distance above the flag. Incoming sheets are stacked by transport belt 12 into the accumulator. As sheets are collected in the accumulator, the accumulator foot moves upwardly toward the sensor assembly. When enough sheets are accumulated. the sensor flag breaks the sensor beam, thereby Indicating that maximum thickness has been reached. The stapler (not shown) can then be activated to drive a staple through the stack. The sensor may be picked slightly ahead of maximum thickness so that the operator could be given advanced warning that the stack thickness is approaching the accumulator/stapler capacity. The warning may be an audible tone in conjunction with an indicator light mess...