Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1980-06-30
1982-05-11
Bratlie, Steven A.
Typewriting machines
Typing by other than type-face or type-die
Thermal
101 1, 219216, 346 76PH, 427121, B41J 304
Patent
active
043290710
ABSTRACT:
For an electro-thermal printer of the kind that uses a ribbon having a central conducting layer that is covered on one surface by a resistive layer that receives electrical printing currents and on the other surface by a thermally transferrable ink layer, printing current is collected from the conducting layer by an electrically conducting contactor at the ink layer surface of the ribbon. Such contact through the ink layer occurs on the takeup side of a printhead where the integrity of the ink layer is not of concern and voids in the ink layer occur as a result of ink transfers for printing. To increase the quality of the electrical connection, projecting points or barbs may be included on said contactor to penetrate to the conducting layer through intact portions of ink layer.
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patent: 4195937 (1980-04-01), Baran
"Color Thermal-Transfer Printing", Edgar et al., IBM.RTM. Technical Disclosure Bulletin, vol. 23, No. 7A, pp. 2633-2634, 12/1980.
"Thermal Biasing Technique for Electrothermic Printing", Wilbur, IBM.RTM. Technical Disclosure Bulletin, vol. 23, No. 9, p. 4302, 2/1981.
Applegate Steven L.
Dyer Stanley
Bratlie Steven A.
Cohen Moshe I.
Grosser George E.
International Business Machines - Corporation
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