Stimulable phosphor sheet storing cassette, radiation image photographing apparatus, photographing information registration apparatus, and radiation image information reading apparatus

DETAILED DESCRIPTION The present invention has been conceived based on consideration of the above circumstances.
An object of the present invention is therefore to obviate the conveyance of a cassette having an erasing ray emitter to a power supply, and to appropriately control an emission time of the emitter.
Another object of the present invention is to provide a radiation image photographing apparatus, a photographing information registration apparatus, and a radiation image information reading apparatus enabling appropriate control of the emission time of the emitter from outside of the cassette.
Still another object of the present invention is to provide a radiation image photographing apparatus and a photographing information registration apparatus not hampering photographing of a radiation image even if the emission time is controlled.
A cassette of the present invention is a cassette for storing a stimulable phosphor sheet having a stimulable phosphor layer formed on a sheet-like substrate and used for recording a radiation image therein, and the cassette comprises: an emitter for emitting an erasing light to the sheet stored in the cassette; a power supply for causing the emitter to emit the erasing light; and a control circuit for controlling a time of emission from the emitter powered by the power supply.
The control circuit controls the emission time based on control information input from outside of the circuit.
More specifically, a circuit for controlling the emission time based on control information output from an apparatus for photographing the radiation image on the stimulable phosphor sheet may be used as the control circuit.
Alternatively, a circuit for controlling the emission time based on control information output from an apparatus for registering photographing information regarding the stimulable phosphor sheet, or a circuit for controlling the emission time based on control information output from an apparatus for reading radiation image information from the stimulable phosphor sheet may also be adopted as the control circuit, for example