Element, device and associated method for capturing a latent rad

Details Element, device and associated method for capturing a latent rad Element, device and associated method for capturing a latent rad

1991-06-28

1992-11-24

Fields, Carolyn E.

Radiant energy

Automatic/serial detection of similar sources

G01N 2304

Patent

active

051665247

ABSTRACT:
An element, a device and an associated method for capturing radiographic images. More particularly, the present invention uses a unique microcapacitor matrix structure to hold varying electrical charges representing a latent radiographic image. The microcapacitor matrix structure or element comprises a first, electrically conductive, backing layer, a second photoconductive layer, a third dielectric layer and a plurality of conductive microplates having dimensions coextensive with a minimum resolvable picture element. The method comprises (a) preventing actinic radiation from impinging on the element, (b) applying an electric potential difference between the plurality of microplates and the backing layer, (c) impinging imagewise modulated X-ray radiation for a first time period onto the element, and (d) after the first time period, stopping the applying step.

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