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Thermal Printhead Protection Cover

IP.com Disclosure Number: IPCOM000045170D
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Barina, RM: AUTHOR [+2]

Abstract

The most fragile element in a thermal printer is the thermal printhead. The printhead frequently fails due to mechanically induced strain causing the wear coating protecting the thermal print elements to crack.

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Thermal Printhead Protection Cover

The most fragile element in a thermal printer is the thermal printhead. The printhead frequently fails due to mechanically induced strain causing the wear coating protecting the thermal print elements to crack.

Referring to the figure, a cover 10 protects from impact or other handling related damage the print element 12 prior to the time the printhead is mounted into the machine. Cover 10 is designed to snap in place with two edges that latch over the potted epoxy 14 on the printhead. Cover 10 is a continuous wall which wraps around the top 16 of the printhead and doubles back over itself, leaving an air space in the interior of cover 10. The wall of cover 10 is curved in the area of the print element 16 to prevent cover 10 from touching print element
16. Cover 10 may be made from a material that is flexible but yet stiff enough to prevent common handling forces from totally compressing cover 10 to the extent that it touches print element area 16. A plastic, such as PVC or polystyrene, is recommended.

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