| 摘要 |
PURPOSE:To prepare a diazo system heat-sensitive recording material which is fixable, by a method wherein oil system resin is contained in a heat-sensitive color development layer whose main color development component is a diazo compound and a coupler. CONSTITUTION:Oil system resin, for example, Escolet made by Tonen Petroleum Chemicals Co, such as fatty system, aromatic system, fatty ring system, whose numeral mean molecular weight is about 300-3,000, is used. Or, a heat-sensitive recording layer, consisting of a diazo compound, such as compounds shown in a formulaI, and a coupler, such as phenol, which reacts with said diazo compound to color-develop it, is formed on a support substance. In a diazo system heat- sensitive recording material, said oil system resin is mixed at a ratio of about 0.2-5 times the weight on a solid except oil system resin. |
