| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a defect in an image by generating a first signal, when the number of printing times is counted to be a fixed value and a second signal, when counting up is attained every time printing is executed and the count value becomes the fixed one and executing a warning display, to recover a developer. SOLUTION: A counter part 9 cumulatively counts up the number of the printing times of printing papers and when the count value reaches a set value previously set, the first signal is transmitted to a developer recovering control part 3. When this control part 3 receives the first signal from the counter part 9, the control part 3 transmits a signal to a display part 10, to execute the warning display. A printer continuously executes a printing operation and when the number of the printing times of a previously set page is counted from the counter part 9, the count value is counted up by one. When this operation is completed, but the count value of the counter part 9 does not reach a previously specified value, a recovering switch is depressed to start the exchange operation of the developer. |
