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Removable Printhead Mount

IP.com Disclosure Number: IPCOM000051694D
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Karsch, AF: AUTHOR [+2]

Abstract

This article relates to the electrical connection of a thermal printhe to a conductive cable without the need for soldering or the use of conductive adhesives.

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Removable Printhead Mount

This article relates to the electrical connection of a thermal printhe to a conductive cable without the need for soldering or the use of conductive adhesives.

The above figure shows an exploded view of a removable printhead mount 1. A thermal printhead 2 is squeezed between a metal (aluminum) heat sink 3 and a conductive flexible ribbon cable 4 by a metal plate 5. Studs 6 on metal plate 5 and stop nuts 7 hold mount 1 together by passing through holes in the flexible cable 4 and heat sink 3.

A printhead retainer 8 and retainer pins 9 assist in aligning printhead 2 to flexible cable 4. Thermal grease is applied to the surface of the printhead 2 facing heat sink 3 to aid in thermal conduction to heat sink 3. Flexible cable 4 is electrically insulated except where it contacts the conductive pads of printhead 2. A foam pad 10 assures positive compression and acts as a seal during operation.

Mount 1 permits low cost assembly and allows for quick replacement of printhead 2. Since there is no permanent attachment to printhead 2, there is also no risk of changing its characteristics.

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