| 摘要 |
PURPOSE:To prevent bleeding and deterioration of image density due to high speed of copying by forming on a conductive substrate a recording layer contg. an insulating resin of a copolymer composed of >=70wt% methyl meth-acrylate monomer units and pigment particles of calcium carbonate, and controlling its surface smoothness measured by the OKEN type smoothness-meter to 20-100sec. CONSTITUTION:The electrostatic recording body is obtained by (1) mixing 100 pts.wt. of a copolymer (30% toluene soln.) composed of monomer units, such as 80wt% methyl methacrylate, 9wt% glycidyl methacrylate, 9wt% ethyl acrylate, and 2wt% acrylic acid, with 30pts.wt. of calcium carbonate and 100pts.wt. of toluene, (2) dispersing them with an attriter for 10min to form a coating fluid, (3) impregnating high quality paper of 60g/m<2> with a fluid contg. 100pts.wt. of ''RKM-5500'' and 100pts.wt. of methanol, (4) drying the paper to obtain a conductive substrate 6 having an attached dried matter of 10g/m<2>, (5) coating one side of this substrate 6 with the coating fluid of a recording layer 3 dispersed in the attriter with a wire bar so as to adjust the dry attached matter to 6g/m<2>, and (6) finally, drying it at 100 deg.C for 1min. |
