Patent ID: 6236058
Filing Date: 2001-05-22
Classification: G01T

Abstract:
A image recording and reading system comprising the combination of a stimulable phosphor sheet formed with, on one side thereof, a first stimulable phosphor layer containing a stimulable phosphor which can store the energy of radiation, the energy of an electron beam and release the stored energy of radiation and the energy of the electron beam in the form of light upon being excited with an electromagnetic wave and formed with, on the other side, a second stimulable phosphor layer containing a stimulable phosphor which can store the energy of visible light and release the stored energy of the visible light in the form of light upon being excited with an electromagnetic wave, and an image reading apparatus comprising a first stimulating ray source capable of exciting the stimulable phosphor contained in the first stimulable phosphor layer, a second stimulating ray source capable of exciting the stimulable phosphor contained in the second stimulable phosphor layer, a light detector for photoelectrically receiving stimulated emission released from the first stimulable phosphor layer or the second stimulable phosphor layer upon being excited, a first filter located on a front side of a light receiving surface of the light detector for cutting a wavelength of a stimulating ray emitted from the first stimulating ray source and allowing light having a wavelength of the stimulated emission emitted from the first stimulable phosphor layer to transmit therethrough, a second filter located on a front side of the light receiving surface of the light detector for cutting a wavelength of a stimulating ray emitted from the second stimulating ray source and allowing light having a wavelength of the stimulated emission emitted from the second stimulable phosphor layer to transmit therethrough and a filter unit for selectively positioning the first filter or the second filter in front of the light receiving surface of the light detector.