Browse Prior Art Database

Document Feeding

IP.com Disclosure Number: IPCOM000088591D
Original Publication Date: 1977-Jul-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Alderson, JC: AUTHOR [+2]

Abstract

This document feeder is of the general type shown in U. S. Patent 3,910,570 and is for use with an office copier to transport original documents to a copier's glass platen for copying.

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Document Feeding

This document feeder is of the general type shown in U. S. Patent 3,910,570 and is for use with an office copier to transport original documents to a copier's glass platen for copying.

Fig. 1 is a side view of a portion of copier 10 and its glass platen 11. Original documents to be copied are serially presented, one at a time, to platform 12, and are thereafter transported to the platen by wide transport belt 13. This belt intermittently moves in a clockwise direction about elongated drive rollers 14 and
15. By way of example, belt 13 and rollers 14 and 15 are in excess of fourteen inches wide, this distance being measured normal to the direction of belt movement.

Entry of original documents and movement of belt 13 are such that the belt drives the document until its leading lefthand edge registers at the platen's left- hand edge 16. The belt then stops and awaits a signal from the copier that imaging of that original has been completed, whereupon the belt drives that document to the left, as it moves another document onto the platen.

Preferably, the platen's edge 16 includes a retractable guide or document stop, as shown in the above-mentioned U. S. patent.

As can be seen in Fig. 1, roller 15 is supported relative to the platen such that the belt's bottom run is spaced from the platen at the platen's right-hand edge.

The major length 17 of roller 14 (best seen in Fig. 2) is such that the left-hand portion of the belt's bottom run would also be slightly spaced from the platen. However, roller 14 includ...