Registers – Records
Patent
1995-08-28
1997-01-28
Hajec, Donald T.
Registers
Records
235380, 503201, 503204, G06K 1900, G06K 500, B41M 520
Patent
active
055979980
ABSTRACT:
A data storing medium comprising a substrate, a first display portion, provided on the substrate, for displaying predetermined data, the first display portion having a first recording material storing data by first recording energy and erasing stored data of history of the use by predetermined erasing energy, and a second display portion, provided on the substrate, for displaying the same data as displayed by the first display portion, the second display portion having a second recording material for storing the data by a second recording energy different from the first recording energy, and stored data being impossible to be erased.
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Itoh Shin-ichi
Ohno Tadayoshi
Tanaka Hisatoshi
Yamaguchi Takashi
Hajec Donald T.
Kabushiki Kaisha Toshiba
Le Thien Minh
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