Informationsaufzeichnungsmedium

Details

Veröffentlichungs-Nr.

EP3296119

Aktenzeichen

EP17191291

Anmeldetag

15. September 2017

Veröffentlichung

17. November 2021

Erteilung

17. November 2021

Rechtsraum

EP

IPC

B41M5/34B42D25/00B41M3/14B42D25/23

Abstract

An information recording medium having a front surface and a back surface has a first color developing layer, a second color developing layer and a third color developing layer. The first color developing layer develops yellow at a temperature not less than a first threshold value. The second color developing layer is arranged at the back surface side with respect to the first color developing layer. The second color developing layer develops magenta at a temperature not less than a second threshold value that is lower than the first threshold value. The third color developing layer is arranged at the front surface side with respect to the first color developing layer. The third color develops cyan at a temperature not less than a third threshold value that is higher than the first threshold value.

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Firmen

KABUSHIKI KAISHA TOSHIBA
Toshiba Infrastructure Systems & Solutions Corporation

Land

🇯🇵 Japan

Fachgebiete