| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermosensitive recording material, which is excellent in color developing density, color re-developing density and the storage stability of a recorded image and shows extremely few ground fogging. <P>SOLUTION: In the thermosensitive recording material, of which the support is overlaid with a thermosensitive recording layer including an electron donative normally colorless or light-colored dye precursor and an electron acceptive compound making the dye precursor to react together under heat to develop color, the thermosensitive recording layer includes a phthalide derivative (A) represented by 3, 3-bis(1-n-butyl-2-methyl indol-3-yl)phthalide and a fluorane derivative (B) represented by 3-(N-ethyl-N-isoamylamino)-7-phenylfluorane as the dye precursor under the condition that the content mass ratio of (B) to 10 parts mass of (A) is 5-500 parts mass. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
