Recorders – Thermal recording
Patent
1982-06-21
1984-11-20
Miller, Jr., George H.
Recorders
Thermal recording
3461351, 400120, G01D 1510, G01D 1524, B41J 320
Patent
active
044842007
ABSTRACT:
In a non-impact recording apparatus comprising (i) a recording head comprising (a) a recording electrode consisting essentially of a plurality of recording styli, and (b) a return electrode, which are embedded in an electrically insulating support member, and (ii) an image-delineating signal application apparatus which applies image-delineating electric current between selected recording styli and the return electrode so as to generate Joule's heat in the portions in an ink ribbon containing an electroconductive thermo-fusible ink material immediately below the recording styli and to soften the ink material, thereby transferring the softened or fused ink material in image patterns to a recording medium, the improvement wherein, on the side of the recording head in contact with the surface of the ink ribbon, there is formed a groove portion out of contact with the surface of the ink ribbon between the recording electrode and the return electrode, thereby preventing the deposition of a layer of the electroconductive ink material between the recording electrode and the return electrode.
REFERENCES:
patent: 3719261 (1973-03-01), Heinzer et al.
patent: 3744611 (1973-07-01), Montanai et al.
Wilbur, C. V., Electrothermal Print Head, IBM Technical Disclosure Bulletin, Feb. 1981, vol. 23, No. 9, 4305-4306.
Kawanishi Toshiyuki
Tabata Yukio
Dunne Gerard F.
Miller Jr. George H.
Ricoh & Company, Ltd.
Shoup Guy W.
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