Proportional density recording medium

Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element

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3461351, G01D 1534, G03C 524

Patent

active

046238964

ABSTRACT:
A thermal imaging system is provided which includes a heat-sensitive element comprising at least one imaging layer having a selected depth dimension and having therein one or more spectrally absorbing organic materials responsive to the radiation employed for imagewise exposure. The percentage concentration of the organic material increases with depth in a predetermined manner so as to provide uniform heating depthwise within the imaging layer.

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