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Feeding Device for Documents of Different Thickness

IP.com Disclosure Number: IPCOM000101904D
Original Publication Date: 1990-Sep-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Droge, D: AUTHOR [+3]

Abstract

In automatic teller machines with a depository function, envelopes are fed by a positive drive to a storage hopper. The drive must work both with very thin and extremely thick envelopes. For this purpose, it is provided with a cut-out roll and an idling roll.

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This is the abbreviated version, containing approximately 74% of the total text.

Feeding Device for Documents of Different Thickness

       In automatic teller machines with a depository function,
envelopes are fed by a positive drive to a storage hopper. The drive
must work both with very thin and extremely thick envelopes.  For
this purpose, it is provided with a cut-out roll and an idling roll.

      Figs. 1A and 1B are schematics of the drive in two different
positions.  Drive roll 1 performs a positive rotation in the
direction 2 and is provided with a cut-out 3 which may be
triangularly shaped.  Roll 1 is made of a relatively hard material,
such as polyurethane 45, having a high friction coefficient for a
positive drive force. Idling roll 4 is made of a soft foam material.
Additionally, roll 4 is fitted with a one-way clutch (not shown) to
ensure that roll 4 always rotates in the feeding direction marked by
arrow 5.

      Fig. 1A shows a selectively thick document 6, such as an
envelope, caught by cut-out 3 of roll 1 and clamped between rolls 1
and 4, thus initiating the feeding operation of document 6 and
deforming soft idling roll 4 as shown.  As indicated by arrows Fh and
Fb above the point of rotation 7, a horizontal force, pointing to the
right, and a backward force, trying to rotate roll 4 in the direction
of arrow 8, are triggered next.  The provision of a one-way clutch
ensures that roll 4 does not rotate backwards.  Instead, further
drive action of roll 1 feeds document 6 to the position shown in Fig.
1B.  Then, docu...