The machine creates correction patterns, measures the image position by reading the correction patterns, and corrects the 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  | New detection of the PCDU/ image transfer belt  | Mode a is done  | 
*1 Mode a: adjusted two times
*2 Mode b: adjusted once