Patent ID: 9465335
Filing Date: 2016-10-11
CPC Classification: G03G

Claim Text:
1. 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 obtain a temperature of the fixation unit based on the first and second detection temperatures and to control the temperature of the fixation unit based on the obtained temperature of the fixation unit 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 one of a first threshold and a second threshold 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 temperature of the fixation unit, 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, wherein the first threshold is set by the heat controller when the detected width of the print medium by the medium width detector is a first width and the second threshold is set by the heat controller when the detected width of the print medium by the medium width detector is a second width smaller than the first width.