JP2005266156A5 - - Google Patents

Claims (8)

Deflection scanning means for converting the light beam generated from the light source to the scanning light, and an optical device including an imaging means for imaging the scanning light on the scanned surface,
An image forming apparatus provided with a photoconductor disposed corresponding to the optical device and provided with the surface to be scanned on the surface,
An inclination detecting means for detecting an inclination amount of the scanning line with respect to a reference line serving as a reference of the scanning line that is a locus of the scanning light;
The optical device can be rotated by a rotation shaft that is on a normal line including either the start point or the end point of the scanning line, and is opposite to the position where the rotation shaft of the optical device is provided. Tilt changing means for rotating the optical device by a rotating member provided at a position on the side;
An inclination correcting means for correcting the inclination amount by the inclination changing means based on the inclination amount detected by the inclination detecting means;
An image forming apparatus comprising: Reference position detecting means for detecting a reference position of the rotating member;
A driving device for driving the rotating member and determining a driving amount based on the number of driving steps;
Driving amount management means for managing the amount of inclination change changed by the inclination changing means based on the number of driving steps based on the inclination amount detected by the inclination detecting means and the reference position detected by the reference position detecting means. The image forming apparatus according to claim 1. Reference position detecting means for detecting a reference position of the rotating member;
A driving device for driving the rotating member and determining a driving amount based on a driving time;
Drive amount management means for managing the tilt change amount changed by the tilt change means based on the tilt amount detected by the tilt detection means and the reference position detected by the reference position detection means by the drive time. The image forming apparatus according to claim 1.   The tilt change amount is represented by a function based on the drive amount, and the tilt correction unit corrects the tilt amount based on the function. The image forming apparatus described. The image forming apparatus further includes a storage unit that stores a relationship between the tilt change amount detected by the tilt detection unit and the drive amount,
4. The image formation according to claim 1, wherein the inclination correction unit corrects the inclination amount based on the inclination change amount and the driving amount stored in the storage unit. apparatus.   An initial position disposing means for disposing the rotating member at an initial position by the driving device after the image forming apparatus is activated and before the inclination amount is corrected by the inclination amount correcting means. The image forming apparatus according to any one of claims 1 to 5.   A drive amount storage unit that stores the drive amount of the rotating member from the initial position as the drive step number after the tilt amount is corrected by the tilt amount correcting unit. Item 7. The image forming apparatus according to Item 6.   The drive amount storage means for storing the drive amount of the rotating member from the initial position as the drive time after the tilt amount is corrected by the tilt amount correcting means. 6. The image forming apparatus according to 6.