| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress the variation of distance between an image holder and an irradiation member in the case of positioning the irradiation member against the image holder while suppressing the generation of resonance in the positioned irradiation member. <P>SOLUTION: An exposure device 23 is positioned in the main scanning direction X, sub-scanning direction Y and optical axis direction Z against the drum body 81 of a photoreceptor drum 21 by way of knocking a positioning pin 46 provided in LPH 40 of the exposure device 23 to the positioning face of a drum supporting member 83 attached to the photoreceptor drum 21. Interlocking with these operation, the force reverse to the main scanning direction X is applied to the positioned LPH 40 due to an oscillation suppressing spring 70 revolved by a guide member 90 bumping to an oscillation suppressing pin 47 attached to LPH 40, and then the resonance of LPH 40 is suppressed. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
