Patent ID: 7091512

Claim:
A radiation image read-out apparatus which is provided with a line sensor which detects stimulated emission emitted from a radiation image convertor panel upon exposure to a line-like stimulating light beam extending in a main scanning direction and reads out a radiation image recorded on the radiation image convertor panel while moving the line sensor and the radiation image convertor panel relatively to each other in a sub-scanning direction intersecting the main scanning direction, wherein the line sensor comprises a CCD having a number of light receiving portions two-dimensionally arranged along the main scanning direction and outputs electric charges obtained by photoelectrically converting the stimulated emission received by the light receiving portions after binning the electric charges in a direction perpendicular to the main scanning direction, wherein the line sensor has light receiving portions which are arranged in a direction perpendicular to the main scanning direction at least over a distance twice the width of the stimulating light beam, and wherein the light receiving portions are smaller in the pixel size in the main scanning direction than a pixel size which is the largest in pixel sizes at which a radiation image can be read out from the radiation image convertor panel at a predetermined resolution in the main scanning direction.