| 摘要 |
PURPOSE:To improve the optical resistance, water resistance, aging stability and printing operability of colorants by using calcium carbonate of 50% or more of all pigments as a pigment, and swelling talc having mean particle size of 2.0-5.0mum by 1-10wt% of all the pigments. CONSTITUTION:As organic colorants aromatic carboxylic acid, its metal salt, and phenol resins preferably employed. Inorganic pigments include, for example, oxides, hydroxide, carbonate, silicates of multivalent metals, such as magnesium, aluminum, calcium, titanium, manganese, nickel, zinc, zirconium, molybdenum, tin, antimony, lead, etc., or kaolin, talc, terra abla, etc. The pigments include calcium carbonate of 50% or more of all the pigments, and preferably talc of mean particle size of 2.5-4.0mum is contained at 3-7wt% of all the pigments. The final amount of the organic developer to be coated on a support is suitably 0.2-1.0g/m<2>. |
