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US 4,284,889 AGranted
Method for recording radiation image using stimulable phosphor
AssigneeFuji Photo Film Co., Ltd.
InventorsHisatoyo Kato, Seiji Matsumoto, Junji Miyahara
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AssigneeFuji Photo Film Co., Ltd.
InventorsHisatoyo Kato, Seiji Matsumoto, Junji Miyahara
Estimating the term…
In a method of recording a radiation image by use of a stimulable phosphor in which the stimulable phosphor is first exposed to an imagewise radiation to store the energy of the radiation and then is exposed to stimulating rays to emit light in accordance with the energy stored therein, the instantaneous emission of light emitted upon exposure of the stimulable phosphor to the radiation is detected to measure the level of the energy of the radiation stored in the phosphor. The instantaneous emission is detected by a photosensor which is located behind the phosphor. The output of the photosensor is utilized to control the density and/or contrast of the final image recorded on a photographic film which is recorded by use of the light emitted by the phosphor upon stimulated.
A method of recording a radiation image on a recording material comprising the steps of exposing a stimulable phosphor to a radiation which carries image information to store the energy of the radiation in an imagewise pattern, stimulating the stimulable phosphor to cause the phosphor to emit light according to the energy stored therein, and recording a visible image on a photosensitive material by use of the light emitted by the stimulated phosphor wherein the improvement comprises steps of measuring the amount of light emitted by the stimulable phosphor by instantaneous emission when the phosphor is exposed to the radiation, and controlling the image recording system in accordance with the results of the measurement.
Dependencies are inferred from the claim text.