| 摘要 |
An image forming apparatus includes a first controller for controlling a replenishing operation of a toner replenisher, based on concentration information relating to toner concentration in a developing unit; and a second controller for controlling a correction operation for an image forming condition based on concentration information relating to a concentration control patch formed on an image bearing member. The second controller does not execute the correction operation for the image forming condition, based on the concentration information relating to toner concentration in the developing unit, regardless of the concentration information relating to the concentration control patch, or limits a correction amount for the image forming condition in the correction operation, based on the concentration information relating to the toner concentration in the developing unit.
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