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    • 4. 发明专利
    • DESENSITIZABLE RECORDING MATERIAL
    • JPH06206379A
    • 1994-07-26
    • JP24591793
    • 1993-09-06
    • APPLETON PAPER INC
    • ROBAATO II MIRAAROUERU SHIYURAIHAAROBAATO DABURIYU BURAUNRUUSHII FUERUDOMAN
    • B41M5/28B41M5/30B41M5/382G03F7/00G03F7/004G03F7/027B41M5/26
    • PURPOSE: To realize a recording material, which is stable at an ambient temperature, by a method wherein a coloring substance and a photosensitive composition are employed as the core material of a microcapsule, on the outside of which an acid developing substance is arranged and the elongation of the polymerized wall of the capsule, the heat resistance of a recording material itself and the point source energy for forming a dyestuff are respectively specified. CONSTITUTION: A recording material is formed by forming the polymerized wall of a microcapsule, through the polymerization at site at the lowest minimum of 65 deg.C of a resin selected from the group consisting of melamine, methylolmelamine or methylated methylolmelamine in a water-based vehicle, wrapping a core material insoluble in the water-based vehicle within the wall and being present an acid developing substance outside the wall. The core material consists of a photosensitive substance, the viscosity of which changes through the irradiation of chemical rays, and a coloring substance. The elongation of the polymerized wall of the microcapsule is set to be 1% or less. The heat resistance of the recording material is set to be 10% or less of the coloring of a ground under the condition being put in an oven held at 150 deg.C for one minute. A dyestuff is set to be formed by giving a point source energy of ΔT of at least 115 deg.C per 1 ms.