Image forming system, image forming apparatus, and feeding apparatus

An image forming apparatus, comprising:

• an accommodating tray configured to accommodate a recording material;
• a feeding rotation member configured to feed a recording material accommodated in the accommodating tray;
• a detection sensor configured to detect a recording material fed by the feeding rotation member;
• one or more hardware processors;
• and
• one or more memories including instructions, that when executed by the one or more hardware processors, cause the image forming apparatus to function as:
• a measuring unit configured to measure time from a predetermined timing until the detection sensor detects the recording material;
• a classification unit configured to classify a plurality of time data obtained by the measuring unit into a first group and a second group in accordance with a length of time;
• a selection unit configured to select a group for predicting a remaining life time of the feeding rotation member from the first group and the second group that are classified by the classification unit;
• and
• a prediction unit configured to predict a remaining life time of the feeding rotation member using the time data included in the group selected by the selection unit.

A feeding apparatus, comprising:

• an accommodating tray configured to accommodate a recording material;
• a feeding rotation member configured to feed a recording material accommodated in the accommodating tray;
• a detection sensor configured to detect a recording material fed by the feeding rotation member;
• one or more hardware processors;
• and
• one or more memories including instructions, that when executed by the one or more hardware processors, cause the feeding apparatus to function as:
• a measuring unit configured to measure time from a predetermined timing until the detection sensor detects the recording material;
• an acquisition unit configured to divide a plurality of time data obtained by the measuring unit into two groups in accordance with a length of time and acquire from the plurality of time data included in a selected group among the two groups a reference time for determining a possibility that an abnormal state may occur when a recording material is fed by the feeding rotation member;
• and
• a determination unit configured to determine a possibility that the abnormal state may occur based on the reference time and the plurality of time data included in the selected group.

A feeding apparatus, comprising:

• an accommodating tray configured to accommodate a recording material;
• a feeding rotation member configured to feed a recording material accommodated in the accommodating tray;
• a detection sensor configured to detect a recording material conveyed by the feeding rotation member;
• one or more hardware processors;
• and
• one or more memories including instructions, that when executed by the one or more hardware processors, cause the feeding apparatus to function as:
• a driver unit configured to drive the feeding rotation member;
• a measuring unit configured to measure a driving amount by the driver unit from a predetermined timing until the detection sensor detects a recording material;
• an acquisition unit configured to divide a plurality of driving amount data obtained by the measuring unit into two groups in accordance with a size of a driving amount and acquire from the plurality of driving amount data included in a selected group among the two groups a reference amount for determining a possibility that an abnormal state may occur when a recording material is fed by the feeding rotation member;
• and
• a determination unit configured to determine a possibility that the abnormal state may occur based on the reference amount and the plurality of driving amount data included in the selected group.