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Document Transport Belt

IP.com Disclosure Number: IPCOM000075901D
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Anderson, TH: AUTHOR [+3]

Abstract

A document transport belt is provided which, with the assistance of vacuum, holds the document in a flat condition while moving it along a predetermined path. Belt 10, Fig. 1, is trained about pulleys 11 and passes in intimate contact with vacuum chamber 12. Documents 15 are received by belt 10 from feeder 16.

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Document Transport Belt

A document transport belt is provided which, with the assistance of vacuum, holds the document in a flat condition while moving it along a predetermined path. Belt 10, Fig. 1, is trained about pulleys 11 and passes in intimate contact with vacuum chamber 12. Documents 15 are received by belt 10 from feeder
16.

In order to obtain the necessary holding force for transporting documents 15, belt 10, Fig. 2, has a series of open-faced chambers 30 which communicate with vacuum chamber 12 by holes 31 and are sealed by documents 15. This arrangement provides a high force for holding the documents to belt 10 with only a low vacuum applied beneath the belt. Hence, the openings to the atmosphere,
i.e. holes 21, can be relatively small without affecting the desired holding force for the documents. This enables a smaller displacement vacuum pump to be used. Perforated plate 13 is used for creating a secondary vacuum chamber when it is desired to further conserve vacuum. It is eliminated when a higher holding force is required. An alternative to using holes 21 is to make the belt in two sections and space these sections a predetermined distance apart to form a channel in communication with the vacuum chamber, as shown in Fig. 3.

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