| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multi-color heat-sensitive recording material excellent in the uniformity of picture quality. SOLUTION: In a multi-color heat-sensitive recording material produced by providing two or more heat-sensitive recording layers on a support, the support is a sheet-like base produced by providing resin layer at least on the side of a paper surface, on which the heat-sensitive recording layer is provided, and the three-dimensional surface roughness on the side, on which the heat- sensitive recording layer before heat-sensitive recording of the sheet-like base, is 0.3μm or less under the condition that the wave length of a filter to cut off is 0.8-2.5mm. Further, the three-dimensional surface roughness on that after heat-sensitive recording of the sheet-like base is 0.4μm or less under the condition that the wave length of a filter to cut off is 0.8-2.5mm. |
