초록

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°C. and at least one ethylene-vinylacetate wax forming a eutectic with a paraffin.

대표청구항 ▼

A thermocarbon ribbon comprising a thermocarbon ribbon carrier and a melt color on one side of said carrier, said melt color containing a pigment and a wax phase in which said pigment is distributed, said wax phase comprising 40 to 90 weight percent of a paraffin with a hardening temperature of abou

A thermocarbon ribbon comprising a thermocarbon ribbon carrier and a melt color on one side of said carrier, said melt color containing a pigment and a wax phase in which said pigment is distributed, said wax phase comprising 40 to 90 weight percent of a paraffin with a hardening temperature of about 50°to 110°C. and 10 to 60 weight percent ethylene-vinylacetate wax which forms a eutectic with the paraffin, said ethylene-vinylacetate wax having a melting point of about 87°to 92°C., a hardening point of about 83°to 92°C., a mean molecular weight of about 6500 to 7000 and a vinylacetate content of about 9 to 11 percent by weight.