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Barrel Rolls for Document Alignment

IP.com Disclosure Number: IPCOM000037141D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 72K

Publishing Venue

IBM

Related People

Padmanabhan, S: AUTHOR

Abstract

In many document processors, in particular in self-service units, documents have to be suitably aligned.

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Barrel Rolls for Document Alignment

In many document processors, in particular in self-service units, documents have to be suitably aligned.

Document 1 is inserted substantially in the direction marked by arrow A. It is aligned with its left edge to guide 2 and transported in the direction of arrow B for further processing.

As with standard transport rolls the document cannot be moved laterally for alignment, the described barrel rolls have been designed to permit such movement.

Document 1 is fed substantially in the direction A through a chute (not shown). It is pinched between the rolls on transport shafts 3 and 4. Each of these shafts carries two pairs of rolls 5 and 6.

Each roll is fitted with four barrels 7 rotating freely on their axes (not visible in the figure). Barrels 7 contact document 1 only along their surface. Transport shafts 3 and 4 are driven in synchronism. Rolls 5 and 6 are offset by 45o so that only their barrels are in constant contact with the document.

While document 1 is being transported in the direction of feed, it is guided into rolls 10 and 11 on alignment shafts 8 and 9. Shafts 8 and 9 always rotate in the illustrated direction, pushing the document towards guide 2. The function of these rolls is similar to those fitted to the transport shafts, except that in the latter case the rolls are driven via a slip clutch 12, so that lateral alignment ends when the left edge of the document rests against guide 2. The rotation of alignment shaf...