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Print Platen for Nonuniform Thickness Forms

IP.com Disclosure Number: IPCOM000081141D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Vichich, FL: AUTHOR

Abstract

Printing on passbooks which have nonuniform thickness requires uniform support pressure underneath the forms so as to have the printed surface in a coplanar relation, regardless of forms thickness along the print line.

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Print Platen for Nonuniform Thickness Forms

Printing on passbooks which have nonuniform thickness requires uniform support pressure underneath the forms so as to have the printed surface in a coplanar relation, regardless of forms thickness along the print line.

Use of a sealed fluid cavity 10 in a reinforced flexible tube or enclosure 12, as shown in the cross-sectional view of Fig. 1, permits development of a uniform pressure against the back side of a form such as a passbook 14, when this member is combined with constraining front reference surfaces such as the bars 16A and 16B. The enclosure 12 is provided with a flexible or segmented metal tread 18 and is backed up by a beam support 20 along its length. Fig. 2 shows the platen used in printing on a passbook 14 having different thicknesses.

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