Image forming apparatus and method of adjusting head pressurizing force

An image forming apparatus, comprising:

• a first sensor disposed downstream of a recording medium conveyance path and being configured to detect a recording medium;
• a second sensor disposed upstream of the recording medium conveyance path and being configured to detect the recording medium;
• a first head disposed between the first sensor and the second sensor opposite to a first platen with the recording medium conveyance path interposed between the first head and the first platen, the first head being configured to form an image on a first surface of the recording medium;
• a first head pressurizing force adjusting device configured to adjust a pressurizing force of the first head to the first platen;
• a second head disposed between the first head and the second sensor opposite to a second platen with the recording medium conveyance path interposed between the second head and the second platen, the second head being configured to form an image on a second surface of the recording medium;
• a second head pressurizing force adjusting device configured to adjust a pressurizing force of the second head to the second platen;
• and
• a control unit configured to control the second head pressurizing force adjusting device to separate the second head from the second platen if a tailing end of the recording medium escapes from the second sensor.