Browse Prior Art Database

Synthetic Forms Simulation for Impact Printers

IP.com Disclosure Number: IPCOM000120164D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 44K

Publishing Venue

IBM

Related People

Helinski, E: AUTHOR

Abstract

A durable synthetic impact surface is provided having the equivalent dynamic properties of ribbon and paper when impacted by high performance print hammers such as those which produce fully formed characters on engraved band printers. (Image Omitted)

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This is the abbreviated version, containing approximately 82% of the total text.

Synthetic Forms Simulation for Impact Printers

      A durable synthetic impact surface is provided having the
equivalent dynamic properties of ribbon and paper when impacted by
high performance print hammers such as those which produce fully
formed characters on engraved band printers.

                            (Image Omitted)

      The described composite surface is formed by the bonding of
.020" which L167 Polyurethane (11) to .020" thick 91 IIR Butyl Rubber
(12) which, in turn, is bonded to a platen mounting surface (13).

      This composite surface produces the same dynamic impact force
and hammer rebound velocity as would be produced when printing fully
formed engraved characters using ribbon and one part paper forms.

      Polyurethane alone has insufficient energy absorption when used
alone and Butyl rubber has insufficient life; however, when used in
the described combination, increased energy absorption and increased
life are achieved.

      In the described configuration impact force is controlled by
the overall thickness of the composite while energy absorption is
mainly controlled by thickness of the Butyl rubber.  Thus, it is
possible to design the composite surface to match the characteristics
of nearly any form.

      When paper and ribbon are used in normal printing it is
necessary to increment both the paper and ribbon after each impact to
achieve representative and repeatable impact forces and ha...