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Etching Pattern of a Dot Band for a Dot Band Printer

IP.com Disclosure Number: IPCOM000043120D
Original Publication Date: 1984-Jul-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Hjorth, BE: AUTHOR [+2]

Abstract

This article describes an etching pattern for the print band of a dot band printer which will reduce maximum stress and eliminate the twisting on the type fingers. On a conventional dot band matrix printer, the metal band is etched into many type fingers in chevron shape, as shown in Fig. 1, and the dots are attached at the tip of the chevron. The chevron design is superior than vertical fingers from the stresses and stability point of view. The conventional chevron design has an uneven stress distribution at the base due to the bending of the finger during the printing process. This uneven stress distribution is caused by an additional twisting because the base is not perpendicular to the slots.

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Etching Pattern of a Dot Band for a Dot Band Printer

This article describes an etching pattern for the print band of a dot band printer which will reduce maximum stress and eliminate the twisting on the type fingers. On a conventional dot band matrix printer, the metal band is etched into many type fingers in chevron shape, as shown in Fig. 1, and the dots are attached at the tip of the chevron. The chevron design is superior than vertical fingers from the stresses and stability point of view. The conventional chevron design has an uneven stress distribution at the base due to the bending of the finger during the printing process. This uneven stress distribution is caused by an additional twisting because the base is not perpendicular to the slots. This twisting can be eliminated or minimized by making the slots perpendicular to the base by extending the inner slot to make the base perpendicular to the slots, as shown in Fig. 2. Under the exact same printing conditions, the chevron pattern shown in Fig. 2 will have a reduced stress at the base near the inner slot. The maximum stress can be reduced by thirty percent, which increases the life of the band.

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