| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat-sensitive recording free from problems in readability of bar codes occurring with elapse of time, even if the recording medium is stored in contact with a film a synthetic leather, etc. or under high temperature/high humidity conditions for a long time, and further, excellent in plasticizer/light resistance in the imaging part. <P>SOLUTION: This heat-sensitive recording medium includes a heat-sensitive color developing layer containing a colorless or pale-color electron-donative leuco dye and an electron-receptive developer, formed on a support. In addition, the recording medium contains a diphenylsulfone derivative as a developer, a 3(N-ethyl-N-p-methylphenylamino)-6-methyl-7-anilinofluoran as a dye and an oxalate as a sensitizing agent. <P>COPYRIGHT: (C)2009,JPO&INPIT |
