Browse Prior Art Database

Self Adjusting Document Feed Separating Device with Restraint Boost Capability by Means of a Document-Positioning Feedback Mechanism

IP.com Disclosure Number: IPCOM000108674D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 77K

Publishing Venue

IBM

Related People

Young, SL: AUTHOR

Abstract

Disclosed is a document-feed-separating device that increases the counter-rotating roller (CRR) restraint force independently from the feedroller feed force as a function of document position in the separator path. The disclosed device is self-adjusting to compensate for wear on the friction surfaces of the CRR tires as well as for changes in the operating environment that cause the rubber of the feedroller and CRR to expand or contract.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 61% of the total text.

Self Adjusting Document Feed Separating Device with Restraint Boost Capability by Means of a Document-Positioning Feedback Mechanism

       Disclosed is a document-feed-separating device that
increases the counter-rotating roller (CRR) restraint force
independently from the feedroller feed force as a function of
document position in the separator path.  The disclosed device is
self-adjusting to compensate for wear on the friction surfaces of the
CRR tires as well as for changes in the operating environment that
cause the rubber of the feedroller and CRR to expand or contract.

      Referring to Figs. 1 and 2, the device consists of a
feedroller/CRR pinchpoint through which all documents pass. The
feedroller 1 drives the top document through the pinchpoint and is
then steered by guide 14 past a camlever 2 which has an interference
engagement with the feedroller. The document actuates the camlever as
it passes between the camlever and the feedroller, resulting in an
increase in pressure of the CRR 3 which is riding against
free-turning idlers 4 mounted in the gaps of the tires of the
feedroller. The increased pressure of the CRR against the idlers
results in the restraint force exceeding the feed force for documents
other than the top document.  The top document experiences additional
feed force due to the camlever pressing the document against the
feedroller that offsets the increase in restraint force.  The CRR
rotates in the opposite direction of the feedrolle...