Ultrasonographic elements containing multiple layers and process

Details Ultrasonographic elements containing multiple layers and process Ultrasonographic elements containing multiple layers and process

1979-04-16

1981-05-26

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Use of sound or nondigital compressive force

430495, 430496, 430505, 430570, 430606, G03C 176, G03C 526

Patent

active

042699142

ABSTRACT:
An ultrasonographic element is disclosed comprised of first and second layers coated on a support, at least one of the layers being a silver halide emulsion layer. One of the layers contains a diffusible ion capable of altering the sensitivity of a silver halide emulsion while the other layer is capable of immobilizing the diffusible ion. Interposed between the layers is a barrier for impeding diffusion of the sensitivity altering ion in the absence of ultrasound. An ultrasonographic image is formed by contacting the element with a transport liquid, ultrasonically exposing the element imagewise to accelerate diffusion of the sensitivity altering ion between the layers, exposing the element to electromagnetic radiation and photographically processing the element to produce an image corresponding to the image pattern of ultrasonic exposure.

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P. J. Ernst, "Ultrasonography," Journal of the Acoustical Society of America, vol. 22, No. 1, pp. 80-83, Jan. 1951.
M. E. Arkhangel'skii, "Action of Ultrasound on the Processes of Photographic Development and Fixing," Soviet Physics-Acoustics, vol. 12, No. 3, pp. 241-248.

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