THERMAL TRANSFER RECORDING RIBBON.

摘要

Ribbon is a polyester film, on one surface of which is deposited a heat-meltable ink layer and on the other surface of which is deposited a heat-resistant protective layer. The heat-resistant protective layer contains a modified 4-methyl-1-pentene polymer. The heat-resistant layer can contain a) 4-methyl-1-pentene polymer chlorides or their derivs. b) amorphous linear saturated polyesters and, opt. c) additional reagents such as antistatic agent, surface smoothing agent, etc. The amorphous linear saturated polyester must be dispersed as particles in the 4-methyl-1-pentene polymer chloride rather than dissolved in it. Or the heat-resistant protective layer can contain a) acid-denatured 4-methyl-1-pentene polymer chloride and/or acid-denatured 4-methyl-1-pentene/alpha-olefin copolymer chloride, and, opt. b) additional reagents such as surface smoothing agent, antistatic agent etc. Acid-denaturation is carried out by addition of unsaturated dicarbonic acid or unsaturated dicarbonic acid anhydride. The antistatic agent can be conductive carbon black. There is a matt layer between the polyester base film and the heat-meltable ink layer.