| 摘要 |
PURPOSE:To enhance an image density with microenergy by providing a heat sensitive coloring layer on a foaming layer which contains foamable plastic filler with thermoplastic polymer having 40-75 deg.C of softening point provided on a support as a wall material. CONSTITUTION:A foaming layer which contains foamable plastic filler composed of thermoplastic polymer having 40-75 deg.C of softening point as a wall material is provided on a support. A heat sensitive coloring layer is laminated on the foaming layer to form a heat sensitive recording material. The diameter of the particles of the filler is preferably approx. 10-50mum, and the foaming magnification is preferably twice-three times. The heat sensitive coloring layer is formed by containing as main ingredients leuco dye and developer. The dye can use triphenyl methanes, fluoranes, etc., and the developer can use phenol substances. |
