| 摘要 |
PURPOSE:To obtain a recording of good color density, by using a specific thermal transfer recording cyanine coloring matter, having a preferable hue in terms of color reproducibility, a large molecular absorptivity coefficient, and stabilities to light, moisture, and chemicals, for an ink layer formed on a base film. CONSTITUTION:The coloring matter is shown by a formula 1. (In the formula, X represents hydrogen, alkyl, alkoxy, alkylcarbonyl-amino, or halogen, Y represents hydrogen, alkyl, alkoxy, or halogen, and R<1> and R<2> hydrogen, substituted or non-substituted alkyl or allyl, or aryl.) The ink prepared by a method wherein the coloring matter is dissolved or dispersed in a medium together with a binder is coated and dried on a base film to produce a transfer sheet. This coloring matter has suitabilities for a full color recording with good color reproducibility and a compounding ingredient for black coloring matter, a good subliming properties, and a large molecular absorptivity coefficient, which enables a recording to the performed at high speed without loading a thermal head to a great extent and to have high color density and sperior shelf stability. |
