| abstract |
PURPOSE: To provide the title sheet capable of giving densely yellow-colored recorded products of high light resistance in high speed without putting large burden on thermal head, with a binder and a specific pyridone azo-dye-contg. coloring material layer on a substrate. n CONSTITUTION: The objective sheet with (A) a binder consisting of cellulose- or acrylic acid-based resin, PS or polyester, etc., pref. 100°C or higher in the softening point and/or heat distortion temperature and (B) a coloring material layer containing a pyridone azo dye of formula I on a substrate. Said dyer can be prepared, for example, by diazotizing m-fluoroaniline followed by coupling the resulting product to pyridones of formula II. n COPYRIGHT: (C)1992,JPO&Japio |