Title:
カード
Document Type and Number:
Japanese Patent JP6878864
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a card that can enhance the confidentiality of the information visibly composed.SOLUTION: A card 10 includes: a card body 20 including information Is subject to confidentiality on a front surface thereof; a light adjustment sheet 30 positioned on the front surface and covering the information Is; and a switching part that starts application of driving voltage in response to the operation to change the condition of the light adjustment sheet 30 from the impermeable condition to the permeable condition, the light adjustment sheet 30 in the impermeable condition making the information Is invisible during a period in which the driving voltage is not applied, the light adjustment sheet 30 in the permeable condition making the information Is visible during the period in which the driving voltage is applied.SELECTED DRAWING: Figure 1
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Inventors:
Takashi Kubo
Application Number:
JP2016240981A
Publication Date:
June 02, 2021
Filing Date:
December 13, 2016
Export Citation:
Assignee:
Toppan Printing Co., Ltd.
International Classes:
B42D25/364; B42D25/30; B42D25/305; B42D25/387; G06F21/84; G06K19/07; G06K19/073; G06K19/077
Domestic Patent References:
| JP2004102840A | ||||
| JP2006119810A | ||||
| JP2010500644A |
Foreign References:
| WO1982002445A1 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda