MAGNETIC RECORDING MATERIAL OF THERMAL RECORDING TYPE

摘要

PROBLEM TO BE SOLVED: To provide a thermal recording type magnetic recording material in which shelf stability is excellent and multi-coloring is enabled. SOLUTION: A solution is prepared by using a polyvalent isocyanate compound as a solvent and using a dye precursor as a solute. The solution is emulsified and dispersed into a hydrophilic protective colloid solution and thereafter the polymeric reaction of the polyvalent isocyanate compound is promoted to obtain composite fine particles. The composite fine particles are incorporated into a thermal coloring layer. A magnetic recording layer is provided between a face unprovided with the thermal coloring layer or a supporting body and the thermal coloring layer. A resin layer cured by electron beam is provided on the thermal coloring layer.