G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 19/00 (2006.01) G06F 17/40 (2006.01) G06K 1/12 (2006.01)
Patent
CA 2137240
3 9 ABSTRACT OF THE DISCLOSURE A recording medium card having a card substrate (20a) made of a flexible material, and a recording portion (21) for visually recording necessary items in a part of the card substrate are disclosed. The recording portion (21) has a reusable indication layer, consisting essentially of an organic compound whose crystal aggregates upon application of heat in a first temperature zone and diffuses upon application of heat in a second temperature zone different from the first temperature zone, on which the necessary items can be visually recorded and erased upon application of heat. An area (24a) is formed in a part of the card substrate, for recording information indicating the number of card use times, equivalent to the number of times data has been recorded and erased on the indication layer.
Kawashima Kazunari
Muto Nobuyuki
Takemoto Takatoshi
Kabushiki Kaisha Ace Denken
Kirby Eades Gale Baker
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