Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1982-05-19
1984-07-24
Ives, P.
Typewriting machines
Typing by other than type-face or type-die
Thermal
428215, 428408, 428412, 4284881, 428497, 428494, 428518, 428517, 428520, 4283213, 428689, 428532, 428913, 428914, 400191, 400119, 427148, 3461351, B41J 320, B41J 310
Patent
active
044615868
ABSTRACT:
An ink ribbon for use in electrothermic non-impact recording comprising an electroconductive base layer and an electroconductive thermal-transferable ink layer which are layered. The base layer comprises a binder resin and an electroconductive material dispersed uniformly in the binder resin, while the electroconductive thermal-transferable ink layer comprises a thermoplastic material and an electroconductive material uniformly dispersed in the thermoplastic material, with the surface resistivity .rho.b of the base layer being greater than the surface resistivity .rho.i of the ink layer, and the softening or melting point Tm1 of the binder resin in the base layer being higher than the softening or melting point Tm2 of the thermoplastic material in the ink layer.
REFERENCES:
patent: 3330791 (1967-07-01), Mater et al.
patent: 4163075 (1979-07-01), Nakano et al.
patent: 4173677 (1979-11-01), Nakano et al.
Kawanishi Toshiyuki
Tabata Yukio
Ives P.
Ricoh & Company, Ltd.
Shoup Guy W.
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