Browse Prior Art Database

Document Feeder and Separator

IP.com Disclosure Number: IPCOM000096538D
Original Publication Date: 1963-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 72K

Publishing Venue

IBM

Related People

Anderson, TH: AUTHOR [+2]

Abstract

Document feeding and transporting for optical character readers must take place without smudging the printing on the documents.

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At least one non-text object (such as an image or picture) has been suppressed.
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Document Feeder and Separator

Document feeding and transporting for optical character readers must take place without smudging the printing on the documents.

The top document of documents 10, carried by movable platform 11, is brought into close proximity to perforated belt 12. Belt 12 is trained about pulleys 9, 13 and 14. Vacuum is supplied to document picker ports 15, 16 and 17 which are connected in series.

Ports 15, 16 and 17 cause a document most out of registration to come into contact with feed belt 12. As a document is fed forward, ports 16 and 17, if not already covered, become covered. Such increases the differential vacuum level adjacent to the belt to provide a greater driving force for the document being fed. As the document covers port 18, which is also in series with ports 15, 16 and 17, belt 12 has its maximum driving action relative to the document. Tube 19 is positioned between ports 17 and 18 and air under pressure is conducted by tube 19 to assist the separation of documents. Ports 20 and 21 are individually connected to a vacuum source.

When the leading edge of the document advanced by belt 12 overlies transducer 22, magnetically tolerated valve 25 is switched.

The ports 15, 6, 17 and 18 arc placed under a slight positive pressure. Vacuum separator ports 30 function to separate multiple documents from belt 12. The vacuum in ports 30 is sufficiently less than that in ports 20 and 21 so that a single document can be fed without excessive slipp...