Browse Prior Art Database

Document Feed Device

IP.com Disclosure Number: IPCOM000076000D
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Souba, CH: AUTHOR

Abstract

This document feed device is selectively operable to feed a document from a rest position to a work station or another document feeder. The document feed device consists of a continuously running roll 10, and a cooperating pressure ball 15 which is constrained in all directions except in the direction normal to 10. A magnet actuator 20 is normally energized to hold ball 15 out of cooperative relationship with roll 10. This enables insertion of a document 25 in the gap formed between 10 and 15. When it is desired to feed document 25, magnet 20 is de-energized. This permits ball 15 to drop toward 25. Ball 15 exerts sufficient pressure to cause document 25 to be fed.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 84% of the total text.

Page 1 of 2

Document Feed Device

This document feed device is selectively operable to feed a document from a rest position to a work station or another document feeder. The document feed device consists of a continuously running roll 10, and a cooperating pressure ball 15 which is constrained in all directions except in the direction normal to 10. A magnet actuator 20 is normally energized to hold ball 15 out of cooperative relationship with roll 10. This enables insertion of a document 25 in the gap formed between 10 and 15. When it is desired to feed document 25, magnet 20 is de-energized. This permits ball 15 to drop toward 25. Ball 15 exerts sufficient pressure to cause document 25 to be fed.

This document feed device is particularly useful in document handling machines which have a wait station positioned ahead of a work station. In such machines, the document is stopped in the wait station by a brake, not shown, with ball 15 in the retracted position. A control signal from a controller, which could be a computer, would selectively de-energize magnet 20, and thereby cause document 25 to be fed to the work station. This document feed device also finds application in hand fed document handling machines, such as low-cost optical readers. For these machines, the documents are fed by hand between ball 15 and roll 10. A sensor, not shown, would sense the document situated between 10 and 15, and generate a signal for de-energizing magnet 20. This would then cause the automatic...