Image forming apparatus

An image forming apparatus comprising:

• a recording material accommodating portion configured to accommodate a recording material;
• an image forming portion configured to form a toner image on the recording material fed from said recording material accommodating portion;
• a fixing portion configured to heat-fix the toner image formed on the recording material by said image forming portion;
• a storing portion configured to store information corresponding to a type of the recording material accommodated in said recording material accommodating portion;
• a detecting portion configured to detect that an operator exists in a predetermined zone in a neighborhood of said image forming apparatus;
• and
• an executing portion configured to execute a start-up process of said fixing portion, when said detecting portion detects the existence of the operator before said image forming apparatus receives an image formation instruction, over a time depending on the information stored in said storing portion.

An image forming apparatus comprising:

• a plurality of recording material accommodating portions each configured to accommodate a recording material;
• an image forming portion configured to form a toner image on the recording material fed from one of said plurality of recording material accommodating portions;
• a fixing portion configured to heat-fix the toner image formed on the recording material by said image forming portion;
• a storing portion configured to store information corresponding to a type of the recording material accommodated in each of said plurality of recording material accommodating portions;
• a detecting portion configured to detect that an operator exists in a predetermined zone in a neighborhood of said image forming apparatus;
• and
• an executing portion configured to execute a start-up process of said fixing portion, when said detecting portion detects the existence of the operator before said image forming apparatus receives an image formation instruction, for the recording material requiring the longest time for performing the start-up process, depending on the information stored in said storing portion.