Electroerosion printhead with tungsten electrodes, and a method

Details Electroerosion printhead with tungsten electrodes, and a method Electroerosion printhead with tungsten electrodes, and a method

1984-01-03

1985-08-06

Tarcza, Thomas H.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346139C, G01D 900, G01D 1516

Patent

active

045339210

ABSTRACT:
The print wires 4 of an electroerosion printhead 1 are retained in grooves 3 of a substrate 2. These wires 4 are fixed to the substrate and covered by a copper layer 6. The copper layer is machined to provide a smooth surface on the copper and between the copper in the grooves and the surface of the substrate. Contact pads 7 are formed on or applied to the strip-like copper layers 6 to fan out the contact areas for suitable accessibility for attaching control cables 17.

REFERENCES:
patent: 1405534 (1922-02-01), Merritt
patent: 3624661 (1971-11-01), Shebanon
patent: 3644931 (1972-02-01), Stringer
patent: 3718936 (1973-02-01), Rice
patent: 3968500 (1976-07-01), Meisel
patent: 4082619 (1978-04-01), Dehnert
patent: 4151535 (1979-04-01), Uberbacher
patent: 4157554 (1979-06-01), Bahr
patent: 4162503 (1979-07-01), Potma
patent: 4189736 (1980-02-01), DeFilipps
patent: 4287525 (1981-09-01), Tagawa
IBM Technical Disclosure Bulletin, vol. 20, No. 10, March 1978, p. 3924, "Laminated, Ceramic Electro-Erosion Printhead", J. N. Humenik et al.

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