| 摘要 |
PURPOSE:To raise a basic atmosphere and to increase copied image density, by a soluble metal halide to the image receiving layer of an image receiving sheet in a light and heat sensitive type recording material. CONSTITUTION:A solution consisting of 1pt. of a phenol or naphthol derivative, 0.1-0.5pt. of a dye, and 10-100pts. of a binder by the weight basis is coated and dried on a support to form a photo sensitive sheet (A). On the other hand, a dispersion fluid consisting of 1pt. of a pignent, 0.1-2pts. of a binder, and 1- 20pts. of water is coated and dried on a support to form a precoat layer, and on this layer, an image receiving layer of a mixture consisting of 1pt. of a diazo compound, 0.5-50pts. of a thiourea derivative, 0.3-6pts. of an acid stabilizer, and a water soluble metal halide, such as LiBr or AlCl3 in an amount of 0.1-1mol per mole of the thiourea derivative is formed to make an image receiving sheet (B), thus a light and heat sensitive type copying material being formed by combining both. |
