The machine creates correction patterns, measures the image position by reading the correction patterns, and corrects the laser writing position.
Operative Condition | Notes | |
|---|---|---|
1 | Power switch just turned on, or recovering from the energy save mode | Mode b or Mode a is done See notes *1 and *2 below. |
2 | When printing (when the temperature has changed by a certain amount since the previous job ended, or when the number of pages printed becomes more than a set number) | Mode b is done |
3 | End of printing (when the temperature has changed by a certain amount since the previous job ended, or when the number of pages printed becomes more than a set number) | Mode b is done |
4 | Front cover opening/closing (when the temperature has changed by a certain amount since the previous job ended) | Mode b is done |
5 | Waiting (when the temperature has changed by a certain amount since the previous job ended, and when the number of pages printed becomes more than a set number) | Mode b is done |
6 | When the machine detects a new PCDU, and image transfer belt | Mode a is done |
*1 Mode a: Fine adjustment twice
*2 Mode b: Fine adjustment once