| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an optical printing head which simultaneously satisfies the condition that image formation performance does not deteriorate, while reducing the occupancy width and preventing a base plate and an image carrier from interfering, without changing the material. SOLUTION: This head 48 is constituted of a light emitting element array 42, in which a plurality of light emitting elements are arrayed and an image formation element array 44 in which image forming elements are arranged to form images with a luminous flux Lin emitted by each light emitting element on the image carrier 2 as a light spot. In this case, the light emitting array 42 is provided on a base plate 40 so as to position each light emitting element on a plane Hin which includes the incident light axis Xin of each image formation element in the light emitting array 42, and when the incident light axis Xin and an emitted light axis Xout are not made parallel and an angle obtained by a plane Hd which is perpendicular to the base plate 40 on which the light emitting element array 42 is provided and the plane Hin which includes the incident light axis Xin of each image formation element is set at an angleθ1, the relation of the angleθ1z≠0 deg. is satisfied at the image forming element.</p> |
