IMAGE FORMING APPARATUS

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PROBLEM TO BE SOLVED : To provide an image forming apparatus that forms toner images including thin lines with suppressed toner scattering.SOLUTION : An image forming apparatus forms solid patch images 601y, 601m, 601c, 601k, and thin-line patch images 602y, 602m, 602c, 602k with the use of image forming units StY, StM, StC, StK; and then corrects a signal level of a thin-line area based on the average toner height Rave, which is calculated from toner heights of the solid patch images Ht1y, Ht1m, Ht1c, Ht1k, and toner heights of the thin-line patch images Ht2y, Ht2m, Ht2c, Ht2k.COPYRIGHT : (C)2012, JPO&INPIT