| 摘要 |
PURPOSE: An image forming device and a color registration method are provided to measure an offset value with high precision, thereby performing color registration with high precision. CONSTITUTION: A control unit(184) obtains a rotation change component of a middle transfer belt for each color based on a position calculated for a second pattern image in a position calculation unit(182). The control unit corrects a position calculated for a first pattern image in the position calculation unit based on the rotation change component obtained for a color of the first pattern image. The control unit obtains an offset value of a different color for a reference color based on the position after correction and performs color registration based on the offset value. [Reference numerals] (120) Image forming unit; (152) Middle transfer belt; (170L,170R) Detection unit; (182) Position calculation unit; (184) Control unit; (186) Signal generation unit; (AA) Transfer
|
