Image forming system for determining recording material capacity requirement

An image forming system comprising:

• an image forming apparatus configured to receive a print job including date-and-time information indicating a date and time of a print to form an image on a recording material based on the print job, the image forming apparatus comprising:
• at least one casing configured to accommodate the recording material;
• a sheet type detection unit configured to detect a type of the recording material fed from the at least one casing;
• and
• a state detection unit configured to detect whether the at least one casing is in an inserted state or in a withdrawn state with respect to a main body of the image forming apparatus;
• an acquisition unit configured to acquire the date-and-time information that is information about a date and time of a print in the received print job, sheet type information indicating a type of the recording material detected by the sheet type detection unit, and state information indicating a state of the at least one casing detected by the state detection unit;
• a determination unit configured to obtain, based on the date-and-time information, the sheet type information, and the state information acquired by the acquisition unit, a number of times that a detection result of the sheet type detection unit differs between print jobs before and after the state of the at least one casing changes, in a plurality of print jobs received by the image forming apparatus during a predetermined period, and to determine whether the number of times is greater than or equal to a predetermined threshold;
• and
• a notification unit configured to notify, in a case where the determination unit determines that the number of times exceeds the predetermined threshold, a content about an addition of a new casing.