HEAT-SENSITIVE RECORD-TYPE MAGNETIC TICKET SHEET

摘要

PURPOSE:To avoid an erasion of color for both the magnetic record layer of a supporter and the heat-sensitive color developing layer on the surface opposite to the magnetic record layer, by using an aqueous resin binding agent for the binding agent of the magnetic record layer and avoiding an inclusion of a plasticizer into the magnetic record layer. CONSTITUTION:A dispersion of the ferromagnetic substance powder and the aqueous emulsion of the styrene-butadiene copolymer, vinylidene chloride, etc. are coated and dried on a surface of an insulated supporter. Thus a magnetic record layer is obtained. Then a heat-sensitive color developing layer containing a colorless or pale leuco-dyestuff, an acidic material (benzoic acid, salicylic acid, etc.) which gives a color development to the leuco-substance and a binding agent (polyvinylalcohol, etc.) is formed on the other surface of the supporter. For a heat-sensitive record- type magnetic ticket sheet thus obtained such as a passenger ticket, etc. no color bleaching occurs since no solvent nor plasticizer permeates into the heat-sensitive record layer from the magnetic record layer.