Registers – Records
Patent
1994-02-08
1995-11-28
Hajec, Donald
Registers
Records
235380, 235440, 235494, G06K 1900
Patent
active
054710448
ABSTRACT:
A card is composed of a reversible thermosensitive recording portion capable of recording information therein, and an irreversible recording portion capable of recording information therein. An information recording method uses the card in which an numerical information is recorded in the reversible thermosensitive recording portion, and an information which has substantially the same contents as those of the numerical information recorded in the reversible thermosensitive recording portion is recorded in the irreversible recording portion for preventing improper alternation of the numerical information recorded in the reversible thermosensitive recording portion. The numerical information recorded in the reversible thermosensitive recording portion and the information recorded in the irreversible recording portion are recognized by an optical device.
REFERENCES:
patent: 4349611 (1982-09-01), Miyakawa et al.
patent: 4954985 (1990-09-01), Yamazaki
patent: 5055662 (1991-10-01), Hasegawa
patent: 5151582 (1992-09-01), Fujioka
patent: 5198646 (1993-03-01), Kunimoto
patent: 5256618 (1993-10-01), Takahashi et al.
patent: 5321239 (1994-06-01), Masubuchi et al.
Amano Tetsuya
Hotta Yoshihiko
Kawaguchi Makoto
Hajec Donald
Lee Michael G.
Ricoh & Company, Ltd.
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