Recorders – Thermal recording
Patent
1984-11-26
1986-10-14
Evans, Arthur G.
Recorders
Thermal recording
400120, 219543, 338309, G01D 1510
Patent
active
046175768
ABSTRACT:
A wear-resistant thermal printhead employs a wearplate deposited atop the printhead substrate adjacent the resistive print element as a hard shield to impacting tickets and abrasive material propelled across the printhead. The wearplate comprises a layer of thick film glass doped with a suitably hard material such as zirconia, alumina, or diamonds. Printhead position is adjusted so that the wearplate is impacted instead of the print element and conductive traces carrying current to the print element are routed out of the way along the backside of the substrate opposite the side subject to abrasion.
REFERENCES:
patent: 3163489 (1964-12-01), Borne
patent: 3312979 (1967-04-01), Torres et al.
patent: 3624661 (1971-10-01), Shebanow et al.
patent: 3718936 (1973-02-01), Rice, Jr.
patent: 3825722 (1974-07-01), Taniguchi
patent: 3984844 (1976-10-01), Tanno et al.
patent: 4254564 (1981-03-01), Ohkubo et al.
patent: 4489485 (1984-12-01), Tatsumi et al.
IBM Tech. Discl. Bulletin, vol. 25, No. 4, Sep. 1982, pp. 2117-2119, "Universal Printhead" by Kuntzleman et al.
"Personal Computer Printer is User Installable" by Joseph D. Barbers; Aug. 1984, of Hewlett-Packard Journal.
Evans Arthur G.
International Totalizator Systems, Inc.
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