Patent ID: 8810860
Filing Date: 2014-08-19
Classification: G03G,H04N

Abstract:
1. An image forming apparatus comprising: an image reader unit for outputting image data of a plurality of document pages supplied through a conveyance path, said image reader unit including, a light source for emitting, and a photoelectric converter having pixels for receiving reflected light and performing photoelectric conversion of the reflected light, wherein said image reader unit obtains said image data by applying the light from said light source to said document and performing photoelectric conversion of the reflected light from said document; and a controller configured to i) execute a detection operation of calculating a correction coefficient based on reference image data obtained by applying the light from said light source to a predetermined reference unit and receiving, by said photoelectric conversion unit, the reflected light from said predetermined reference unit to perform photoelectric conversion of the received light to said reference image data, ii) correct image density variations of said image data caused by orientation variations of said light source and pixel sensitivity of said photoelectric conversion unit based on said correction coefficient, iii) form an output image to be printed on output paper in accordance with a prescribed manner in which images of a plurality of pages are to be arranged on said output paper, based on said corrected image data, and iv) determine an interval at which said detection operation avoids execution between readings of images of individual pages of said plurality of pages to be arranged on one sheet of said output paper in accordance with said prescribed manner.