| 摘要 |
PROBLEM TO BE SOLVED: To correct warpage or twist of a lens array and perform reliable positioning.SOLUTION: An optical print head includes: a substrate 2 mounting a light-emitting element array 10 where a plurality of light emitting sources are arranged along a main scanning direction; a lens array 20 forming an image of light beam; and a housing 11 for supporting the substrate 2 and the lens array 20. The substrate 2 has a plurality of engagement holes 6. In the lens array 20, a first contact surface 26 is formed. The housing 11 is provided with: a first reference surface 13c, second reference surfaces 12a, 13a for abutting the substrate; and a plurality of engaging pins 15 provided at an opposite position to the plurality of engagement holes 6. The optical print head is provided with a cover member 40 in which a passage part that positions and supports the substrate 2 and the lens array 20 and light beam passes is formed, which energizes the first contact surface 26 on the first reference surface 13c by pressing the lens array 20 at a plurality of points along the main scanning direction, and seals the plurality of light emitting sources and the lens array 20. |
