Appeal No. 2005-2140
Application No. 09/943,355
9. A radiation image recording and read-out apparatus,
comprising:
i) an image recording section for supporting a stimulable
phosphor sheet at a position for image recording, at which one
surface of the stimulable phosphor sheet is exposed to radiation,
ii) image read-out means located on a side of the other
surface of the stimulable phosphor sheet supported at the
position for image recording, which other surface is opposite to
the one surface of the stimulable phosphor sheet exposed to the
radiation, the image read-out means performing an image read-out
operation by irradiating stimulating rays in two-dimensional
directions to the stimulable phosphor sheet, on which a radiation
image has been stored during its exposure to the radiation, the
stimulating rays causing the stimulable phosphor sheet to emit
light in proportion to an amount of energy stored thereon during
its exposure to the radiation, and photoelectrically detecting
the emitted light, an image signal, which represents the
radiation image having been stored on the stimulable phosphor
sheet, being thereby obtained, and
iii) a sheet-shaped erasing light source located in close
vicinity to the stimulable phosphor sheet and on a side of the
one surface of the stimulable phosphor sheet supported at the
position for image recording, which one surface is exposed to the
radiation, the sheet-shaped erasing light source having uniform
transmissivity to the radiation, the sheet-shaped erasing light
source releasing energy, which remains on the stimulable phosphor
sheet after the image signal has been obtained from the
stimulable phosphor sheet, by irradiating erasing light to an
entire area of the stimulable phosphor sheet,
wherein the stimulable phosphor sheet comprises a sheet-
shaped transparent substrate and a stimulable phosphor layer,
the sheet-shaped erasing light source is arranged on one
side of the sheet-shaped transparent substrate, and the
stimulable phosphor layer is arranged on another side, which is
opposite to the one side, of the sheet-shaped transparent
substrate, and
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