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Document Bail for Vacuum Feed Systems

IP.com Disclosure Number: IPCOM000044792D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Beran, MA: AUTHOR

Abstract

An improved bail mechanism for a document feeder is described.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 85% of the total text.

Page 1 of 1

Document Bail for Vacuum Feed Systems

An improved bail mechanism for a document feeder is described.

A bail is necessary to hold down the sheets of paper or documents in a stack in machines such as copiers and printers. A paper picker which selects one sheet at a time from the stack must overcome the force exerted by the bail so no more pressure than that required to hold the stack should be exerted. The distance of the bail from the picker mechanism is usually a function of the weight of the paper. For light-weight paper, the bail is moved closer to the picker mechanism so as to provide stiffness to the stack. This prevents more than one sheet from being picked. For heavier paper, the bail is moved away from the picker mechanism. This reduces the resistance exerted against the picking process.

In a recirculating document feeder, the papers (documents) are of various weights and can have folds or wrinkles in the documents. There is also a problem that a bail positioned too far back from the picker mechanism will allow a document entering an empty stack to be forced over the stack aligners. A bail too close to the picker mechanism, on the other hand, will impede the picking process. In addition, it must be insensitive to paper weight since it is used by the casual operator and can have no adjustment.

This bail is flat with resilient fingers that allow folds or wrinkles in the documents to pass without either catching or having to raise the weight of the entire bai...