Thermocolor ribbon

Details Thermocolor ribbon Thermocolor ribbon

1989-07-26

1992-06-02

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Ribbon, per se

4002411, 428195, B41J 3102

Patent

active

051182114

ABSTRACT:
The color transfer density of a thermocarbon ribbon can be improved by forming the wax phase of a melt color layer of such a ribbon so that it contains a paraffin with a hardening temperature of about 50 to 110.degree. C. and at least one ethylene-vinylacetate wax forming a eutectic with a paraffin.

REFERENCES:
patent: 4895465 (1990-01-01), Mecke et al.
patent: 4938617 (1990-07-01), Mecke et al.
patent: 4983445 (1991-01-01), Ueyama
patent: 4988563 (1991-01-01), Wehr

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