Image forming apparatus

An image forming apparatus comprising:

• first storage including a plurality of storage areas specified by a plurality of addresses;
• a writing controller configured to perform a writing process through which data is written piece by piece to storage areas specified by write addresses among the storage areas;
• a reading controller configured to perform a reading process through which data stored in storage areas specified by read addresses among the storage areas is read piece by piece;
• a conveyance section configured to convey a recording medium;
• a detector configured to detect an overrun;
• and
• a main controller configured to control the writing controller and the reading controller, wherein
• the write addresses are designated in a predefined sequence,
• the read addresses are designated in the predefined sequence,
• the writing process and the reading process are performed in the storage areas included in the first storage in a first order,
• the overrun indicates that the writing process and the reading process are performed in the storage areas included in the first storage in a second order that is opposite to the first order, and
• while the conveyance section conveys the recording medium, the main controller controls the writing controller or the reading controller based on a detection result of the detector.