| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of more reliably detecting patches formed on a recording medium while suppressing an increase in the consumption of the recording media and toner. SOLUTION: In the image forming apparatus which detects the density or color of each patch of a patch array fixed on recording medium that is conveyed and corrects an image formation condition based on the detection result, the patches are formed as the patch array so that the conveyance-direction length of each patch gradually increases in order of detection, and the conveyance-direction length of each patch gradually increases according to increasing of a detection position variation amount of a patch in order of detection. COPYRIGHT: (C)2009,JPO&INPIT |
