| 摘要 |
PURPOSE:To get rid of occurrence of deterioration caused by heat and pressure when recording and erasing is done and deformation caused by repeated use by incorporating a resin matrix, an org. low mol.wt. substance and a spherical filler. CONSTITUTION:A resin matrix used for a heat-sensitive layer of a recording material forms a layer wherein an org. low mol.wt. substance is homogeneously dispersed and held and largely influences to the degree of transparency at the max. transparency. It is therefore pref. that the resin matrix exhibits good transparency and is mechanically stable and has a good film forming property. In addition, a resin with a glass transition temp. of at least 80 deg.C is pref. As the org. low mol.wt. substance, a sulfide is additionally mixed to those higher fatty acid. In addition, a spherical filler is also compounded. As the filler, those which have certain levels of physical strength and heat resistance can be used regardless of such shapes as being solid, hollow and porous. |
