| 摘要 |
<p>PURPOSE:To ensure that a margin position can be easily adjusted outside a main device system by providing a control device which changes a position for image writing start in a main direction for a transfer sheet, in according with an operation outside a main device system. CONSTITUTION:If a position for image writing start is set in relation to a sheet feed tray 11, a sheet feed tray 12, a mass sheet feed device 15 or a perfect printing device 16 at an operation panel, that is, an operation part provided on the outer surface of a main device system 10, a laser drive control part 22 is controlled through a main control part 21. Then a laser signal is generated based on a laser drive synchronization signal as one best suited for either of the sheet feed tray 11, sheet feed tray 12, mass sheet feed device 15 or the perfect printing device 16. Finally, the position for image writing start in a main scanning direction for a photosensitive element 18 through a polygon mirror 23 is automatically adjusted.</p> |
