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Browse Prior Art Database

Low Cost Print Head

IP.com Disclosure Number: IPCOM000044847D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Acciai, MC: AUTHOR [+3]

Abstract

A low cost print head suitable for use in an electrolytic printer is implemented by the use of a plastic molded jacket fitted on an electrode to allow interference fit into a conductive carrier assembly, metal or conductive plastics, see the figure (a). The carrier can be developed by various processes, e.g., dye casting, injection molding or sintering. The insulator on the electrode is chosen for low moisture permeability, mechanical strength (compressive) and wear behavior. The conductive carrier acts as the system cathode and is also chosen to have mechanical rigidity, wear characteristics that match with those of the insulator and electrode materials and sufficient conductivity to properly function as a cathode ground.

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Low Cost Print Head

A low cost print head suitable for use in an electrolytic printer is implemented by the use of a plastic molded jacket fitted on an electrode to allow interference fit into a conductive carrier assembly, metal or conductive plastics, see the figure
(a). The carrier can be developed by various processes, e.g., dye casting, injection molding or sintering. The insulator on the electrode is chosen for low moisture permeability, mechanical strength (compressive) and wear behavior. The conductive carrier acts as the system cathode and is also chosen to have mechanical rigidity, wear characteristics that match with those of the insulator and electrode materials and sufficient conductivity to properly function as a cathode ground.

The carrier can also be built up from laminations such that a final structure, less inserts, looks identical to the figure (b). The plastic collar jacket size is chosen to be oversize to the carrier so that a modest degree of interference pressure exists obviating the need for adhesives. A back plate (with appropriate cut outs for the electrode wires) could be used as a retainer. Similarly, a mating connector block could provide retention.

Disclosed anonymously

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