Heat sensitive color developing material and heat sensitive...

Details Heat sensitive color developing material and heat sensitive... Heat sensitive color developing material and heat sensitive...

C - Chemistry, Metallurgy

09

K

C09K 3/00 (2006.01) B41M 5/337 (2006.01) B41M 5/36 (2006.01) G01K 11/12 (2006.01)

Patent

CA 2216879

A thermal-sensitive color developing material containing metal particles and a matrix substance where the size of the metal particles irreversibly increase at room temperature due to cohesion, and a thermal-sensitive element using the thermal-sensitive color developing material are disclosed. The thermal-sensitive color developing material irreversibly develops a color at a temperature of room temperature or higher.

Cette invention concerne une matière de développement couleur thermosensible, laquelle comprend des particules métalliques ultrafines et des substances matricielles, la taille des particules métalliques augmentant de manière irréversible à température ambiante par effet de cohésion. Cette invention concerne également un élément thermosensible faisant appel à cette matière. Cette matière de développement couleur thermosensible permet d'effectuer un développement irréversible des couleurs à une température supérieure ou égale à la température ambiante.

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