| 摘要 |
PURPOSE:To improve low temp. development, and to enhance raw storage stability, by adding a thermofusable color development aid to a thermosensitive recording layer, and using paper sized with a specified sizing soln. on the surface for a support. CONSTITUTION:On a support, there is provided a first layer composed of a diazo compd., and a polymer of vinyl chloride, vinylidene chloride, styrene, acrylic ester, methacrylic ester, or olefin, or a copolymer of at least one monomer of them, or a mixture of them. A second layer composed of a coupler is formed on the first layer. A thermofusable color developing aid, such as capronamide is incorporated in said first layer. The surface of copying paper is sized with a sizing soln. composed mainly of a resin hardly soluble or insoluble in a solvent used for the coating material of the first layer. |
