Image forming apparatus and sheet conveying method

A method of handling sheet conveyance errors in an image forming apparatus, the method comprising:

• detecting a sheet conveyance error;
• detecting an operation of a sheet storage unit in the image forming apparatus;
• and
• executing a predetermined process after the operation of the sheet storage unit is detected and a predetermined condition relating to an occurrence frequency of the sheet conveyance error during a particular period is satisfied, wherein
• the method further comprises calculating the occurrence frequency every time the sheet conveyance error is detected or image forming is complete, and
• the predetermined condition is satisfied when the occurrence frequency differs from a predetermined occurrence frequency by more than a threshold.

An image forming apparatus comprising:

• a sheet storage unit including a sheet tray on which one or more sheets are to be stacked;
• a sensor configured to detect that the sheet storage unit is being operated;
• and
• a processor configured to execute a predetermined process after the sensor detects that the sheet storage unit is being operated and a predetermined condition relating to an occurrence frequency of a sheet conveyance error during a particular period is satisfied, wherein
• the processor is configured to calculate the occurrence frequency every time the sheet conveyance error occurs or image forming is complete,
• the predetermined process alleviates an occurrence condition of the sheet conveyance error, and
• the processor is configured to increase a sheet conveyance time limit to alleviate the occurrence condition of the sheet conveyance error.