| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a printer head of which resolution can be markedly improved without lowering an exposure light quantity of the printer head, and to provide an image forming apparatus using the same. <P>SOLUTION: An optical member 23 is formed of an entire transparent member in a rectangular solid shape and has a first optical face 31 and a second optical face 32 which extend in diagonal directions and are roughly perpendicular to each other. Namely, each of the first optical face 31 and the second optical face 32 forms a face extending at an angle of approximately 45 degrees with respect to an optical axis direction of light beams L1 to L3 which are respectively incident on incident faces 23a to 23c of the optical member 23. The first optical face 31 and the second optical face 32 reflect the light beams input from respective one face sides 31a, 32a, i.e., sides facing a photosensitive drum 3K and allows the light beams input from the other face sides 31b, 32b, i.e., sides opposite to the photosensitive drum 3K to pass therethrough. <P>COPYRIGHT: (C)2012,JPO&INPIT |
