Patent ID: 6677973
Filing Date: 2004-01-13
Classification: B41J,G02B

Abstract:
A color image forming apparatus, comprising:a first image forming device including a first scanning optical device to form a first image and a first developing device to develop the first image into a first color toner image; and a second image forming device including a second scanning optical device to form a second image and a second developing device to develop the second image into a second color toner image; each of the first and second optical devices comprising: a light source which emits a light beam; a deflector which deflects the light beam so as to scan an image forming surface in a main scanning direction with the light beam; a plurality of lenses provided between the deflector and the image forming surface to focus the deflected light on the image forming surface, wherein each of the plurality of lenses has a length along the main scanning direction; and a lens attitude adjusting device including a tilting device to rotate at least one lens of the plurality of lenses around an axis parallel to the length of the one lens to adjust the characteristic of a scan line image, and wherein at least one of the tilting devices rotates the one lens so that the characteristic of the first scan line image and the characteristic of the second scan line image substantially become the same.