发明名称 MAGNETIC MEDIUM AND MAGNETIC MEDIUM PROCESSOR
摘要 PURPOSE:To provide the magnetic medium which can display only a character magnetic latent image without making encode magnetic information visible when a facility user generates any doubt in utilizing a facility utilizing card. CONSTITUTION:This magnetic medium is provided with a first magnetic recording layer 3 composed of a high coercive force magnetic material so as to record the encode information and a second magnetic recording layer 5 having smaller coercive force than the coercive force of the first magnetic recording layer 3 and recording character information for display, which can be made visible by a magnetic latent image/visible image converting means 40, as the latent image, a magnetic shielding layer 4 composed of a soft magnetic material is provided on the first magnetic recording layer 3 for confining the line of magnetic force of the encode information recorded on the first magnetic recording layer 3 so as not to leak it outside, and the encode information recorded in the first magnetic recording layer 3 is prevented from being made visible by the magnetic latent image/visible image converting means 40.
申请公布号 JPH06282697(A) 申请公布日期 1994.10.07
申请号 JP19930066290 申请日期 1993.03.25
申请人 TOSHIBA CORP 发明人 ONO TADAYOSHI;KAMIYAMA MITSUAKI
分类号 B42D15/10;C09D5/23;C09D7/12;G06K17/00;G06K19/06;G06Q50/00;G06Q50/30;G07B11/02;G11B5/80;G11B23/34;G11B23/40 主分类号 B42D15/10
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