| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of grasping exact information on jamming history inside the apparatus. SOLUTION: When a printing requirement is received and as soon as a printing ready state is attained, paper feeding is started. When a jamming occurs in a paper feeding unit, F- A1 is turned on out of F$ JAM being a flag. Similarly, when a jamming occurs in a resist part, F- A2 is turned on, and when it occurs in a fixing part, F- A3 is turned on. When a jamming occurs in a mail box unit 300, F- B is turned on, in a double-sided unit 200, F- C is turned on, and in a finisher unit 400, F- D is turned on. A task to turn on the flag is performed by a printing task to control printing operation, and a task to check a jamming flag and log it in a non-volatile memory is performed by a status check task by performing polling at specified time intervals. |
