| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an original document illuminating device, an original document reading device, and an image forming apparatus, capable of reducing effectively color unevenness in an illumination region in a scanning direction and obtaining a wider white illumination region. <P>SOLUTION: An original document reading device includes an original document illumination unit having a light emission section comprising a plurality of LED light sources 1 disposed along a main scanning direction of a light irradiation region and a diffusion member 2 arranged between the light emission section and an original document reading surface 3, and the diffusion member 2 is an aeolotropic diffusion member having larger diffusivity in a second direction perpendicular to a first direction than the diffusivity in the first direction in a diffusion surface, and the light emission section and the diffusion member 2 are arranged so that a normal vector of a light emitting surface of the LED light source 1 is perpendicularly incident to a main scanning direction cross-section of the diffusion surface of the diffusion member 2 and is obliquely incident to a sub-scanning direction cross-section. There are also provided an original document reading device and an image forming apparatus having the original document reading device. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
