Image formation apparatus

An image formation apparatus comprising:

• a heater;
• a fixation unit provided to be heated by the heater and thereby fix an image attached on a print medium onto the print medium;
• a first temperature detector provided to detect a temperature of a vicinity of the fixation unit and output a first detection temperature;
• a second temperature detector provided to detect a temperature of a place which is different from that of the first temperature detector, and output a second detection temperature;
• a medium width detector provided to detect a width of the print medium and output a detected width;
• and
• a heat controller configured to control a temperature of the fixation unit based on the first detection temperature and a target temperature, wherein
• under a predetermined condition, the heat controller controls the temperature of the fixation unit by setting the target temperature at a first target temperature, and
• if a quantity of heat supplied to the fixation unit exceeds a value for a heat quantity judgment set based on the detected width while controlling a drive of the heater based on the first target temperature and the first detection temperature, the heat controller replaces the first target temperature with a second target temperature which is lower than the first target temperature, and continues fixing the image onto the print medium.

An image formation apparatus comprising:

• a heater;
• a fixation unit provided to be heated by the heater and thereby fix an image attached on a print medium onto the print medium;
• a first temperature detector provided to detect a temperature of a vicinity of the fixation unit and output a first detection temperature;
• a second temperature detector provided to detect a temperature of a place which is different from that of the first temperature detector, and output a second detection temperature;
• a medium width detector provided to detect a width of the print medium and output a detected width;
• a number-of-printed-print-media detector provided to detect the number of printed print media that have been printed continuously since starting the printing, and output a detected number of printed print media;
• and
• a heat controller configured to control a temperature of the fixation unit based on the first detection temperature and a target temperature, wherein
• under a predetermined condition, the heat controller controls the temperature of the fixation unit by setting the target temperature at a first target temperature, and
• if the detected number of printed print media exceeds the number of print media for a heat quantity judgment set based on the detected width while controlling a drive of the heater based on the first target temperature and the first detection temperature, the heat controller replaces the first target temperature with a second target temperature which is lower than the first target temperature, and continues fixing the image onto the print medium.