Color memory toy set

Details Color memory toy set Color memory toy set

1990-02-08

1991-04-30

Yu, Mickey

Amusement devices: toys

Operated by intrinsic temperature change

446385, 401 1, 434328, A63H 3322

Patent

active

050114450

ABSTRACT:
A color memory toy set has a color memory toy with surface, at least one portion of the surface being provided with a color memory temperature-sensitive color changing layer colored with a coloring material including a color memory temperature-sensitive dye exhibiting hysteresis characteristics in response to temperature change between a colored state and a colorless state or between a color (I) state and a color (II) state. The toy set also includes a writing pen for either causing an image to appear or disappear on the color memory temperature-sensitive layer by drawing the image on the layer to change the color state of the drawn portion into a first state, or for causing an image to appear or disappear on the color memory temperature-sensitive layer by drawing the image on the layer to change the color state of the drawn portion to a second state.

REFERENCES:
patent: 1592148 (1926-07-01), Munn
patent: 4028118 (1977-06-01), Nakasuji et al.
patent: 4176273 (1979-11-01), Fujie et al.
patent: 4720301 (1988-01-01), Kito et al.
patent: 4725462 (1988-02-01), Kimura
patent: 4818215 (1989-04-01), Taga
patent: 4820683 (1989-04-01), Vervacke et al.
patent: 4895827 (1990-01-01), Vervacke et al.
patent: 4917643 (1990-04-01), Hippely et al.
patent: 4920991 (1990-05-01), Shibahashi et al.

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