Device for producing x-ray images by means of a photoconductor

Details Device for producing x-ray images by means of a photoconductor Device for producing x-ray images by means of a photoconductor

1990-06-27

1991-03-05

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Xeroradiography

378 28, G03G 13044

Patent

active

049982664

ABSTRACT:
The invention relates to a device for producing X-ray images by means of a photoconductor which converts X-rays into a charge pattern, which photoconductor is charged prior to the X-ray exposure, its surface being scanned after the exposure in order to detect the charge pattern. Artefacts are liable to occur in an X-ray image when the exposure directly follows an X-ray exposure during which the photoconductor has received, at least in given areas, a high dose. These artegacts are avoided in accordance with the invention in that there is provided a recharging device which limits the decrease of the charge density on the surface of the photoconductor during the X-ray exposure to a predetermined value.

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