Patent attributes
An image data creating method and apparatus capable of preventing quality degradation of the image created by combining a plurality of image portions sharing a common region. The light reflected at the linear region on the original upon the irradiation of light from the linear light source is detected by the linear detecting means with the original being moved in the sub-scanning Y direction with respect to two linear sensors having a plurality of light receiving sections disposed linearly in the main scanning X direction such that light receiving sections located on the end portions of the respective linear sensors detect light emitted from the same position on the original in duplicate, and the image data detected either of the light receiving sections located on the end portions of the respective linear sensors are adopted as the image data representing the position on the original.