Thermal writing surface and method for making the same

Details Thermal writing surface and method for making the same Thermal writing surface and method for making the same

1993-12-29

1996-05-07

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

427152, 503201, B41M 540

Patent

active

055146350

ABSTRACT:
A thermal writing device which changes color in response to induced temperature changes and a method for making such a device is disclosed. The thermal writing device includes a flexible substrate with low thermal mass for rapidly assimilating temperatures. Thermochromic inks which change color when subjected to temperature changes are printed upon or incorporated within this flexible substrate. The flexible substrate is disposed upon a support material having low thermal mass and poor heat conductance to facilitate rapid color transitions by the thermochromic inks with minimal expenditures of energy.

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