Image forming apparatus, method to convey a sheet, and computer readable medium for the image forming apparatus

A non-transitory computer readable medium storing computer readable instructions that are executable by a computer to control an image forming apparatus, when executed by the computer, the image forming apparatus comprising an image forming unit configured to form an image on a sheet;

• a fixing unit configured to thermally fix the image on the sheet;
• a temperature sensor;
• and a controller configured to control the image forming unit and the fixing unit to execute a printing operation to print the image on the sheet at one of a plurality of printing paces, the computer readable instructions being configured to cause the computer to control the image forming apparatus by performing the printing operation at:
• a first high-temperature printing pace when a first print setting is applied and when a temperature detected by the temperature sensor is higher than a first threshold value;
• a first low-temperature printing pace when the first print setting is applied and when the temperature detected by the temperature sensor is one of lower and equal to the first threshold value;
• a second high-temperature printing pace when a second print setting is applied and when the temperature detected by the temperature sensor is higher than a second threshold value;
• and
• a second low-temperature printing pace when the second print setting is applied and when the temperature detected by the temperature sensor is one of lower and equal to the second threshold value,
• wherein the first low-temperature printing pace is one of lower and equal to the first high-temperature printing pace,
• wherein the second low-temperature printing pace is one of lower and equal to the second high-temperature printing pace, and
• wherein an absolute difference between the second high-temperature printing pace and the second low-temperature printing pace is greater than an absolute difference between the first high-temperature printing pace and the first low-temperature printing pace.

A method configured be implemented on a processor to control an image forming apparatus, the image forming apparatus comprising an image forming unit configured to form an image on a sheet;

• a fixing unit configured to thermally fix the image on the sheet;
• a temperature sensor;
• and a controller configured to control the image forming unit and the fixing unit to execute a printing operation to print the image on the sheet at one of a plurality of printing paces, the method comprising controlling the image forming apparatus to perform the printing operation at:
• a first high-temperature printing pace when a first print setting is applied and when a temperature detected by the temperature sensor is higher than a first threshold value;
• a first low-temperature printing pace when the first print setting is applied and when the temperature detected by the temperature sensor is one of lower and equal to the first threshold value;
• a second high-temperature printing pace when a second print setting is applied and when the temperature detected by the temperature sensor is higher than a second threshold value;
• and
• a second low-temperature printing pace when the second print setting is applied and when the temperature detected by the temperature sensor is one of lower and equal to the second threshold value,
• wherein the first low-temperature printing pace is one of lower and equal to the first high-temperature printing pace,
• wherein the second low-temperature printing pace is one of lower and equal to the second high-temperature printing pace, and
• wherein an absolute difference between the second high-temperature printing pace and the second low-temperature printing pace is greater than an absolute difference between the first high-temperature printing pace and the first low-temperature printing pace.