Image-Forming Apparatus Setting Upper Limit of Electric Power Based on Detection Result of Sheet Detector

An image-forming apparatus comprising:

• a sheet accommodating unit configured to accommodate a recording sheet;
• an image forming unit configured to form an image on the recording sheet;
• a pickup roller configured to convey the recording sheet accommodated in the sheet accommodating unit to the image forming unit;
• a sheet detector configured to detect the recording sheet conveyed from the sheet accommodating unit by the pickup roller;
• a fixing unit including a heating member configured to heat the recording sheet;
• a power supply unit configured to supply the heating member with electric power;
• and
• a control device configured to:
• output a signal controlling the pickup roller to convey the recording sheet from the sheet accommodating unit;
• determine, based on a detection result of the sheet detector, whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit;
• control the power supply unit to supply the heating member with the electric power such that the electric power per unit time does not exceed an upper limit;
• and
• set the upper limit depending on a determination result of whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit.