Image forming apparatus

A multifunctional peripheral device, comprising:

• a laser printing unit configured to print color images on a sheet using a printing process including overlaying a plurality of toner images of different colors;
• a first temperature sensor inside the laser printing unit and configured to detect a temperature;
• and
• a controller configured to:
• execute a first position shift correction for each of the plurality of toner images when the first temperature sensor detects a change in temperature from a previously detected temperature exceeds a first threshold value set for a first temperature range, and
• after the first position shift correction, execute a second position shift correction when the detected change in temperature exceeds a second threshold value set for a second temperature range higher than the first temperature range and the temperature is outside a prescribed temperature range, and skip the second position shift correction otherwise.