Method of manufacturing optical scanning apparatus and optical scanning apparatus

摘要

A method of manufacturing an optical scanning apparatus which includes: a light source having a plurality of luminous points; a coupling lens converting a plurality of beams from the light source into luminous flux; a deflector deflecting the luminous flux in a main scanning direction; a scanning lens focusing the luminous flux from the deflector onto a scanned surface so as to form an image; and a frame supporting at least the light source and the coupling lens, the method includes: fixing a coupling lens to a frame; adjusting a position of the light source, relative to the coupling lens fixed to the frame, while the light source emits the light; adjusting a pitch between the plurality of beams the optical axis while the light source emits the light; and fixing the light source to the frame at the adjusted position and the adjusted pitch.

主权项

1. A method of manufacturing an optical scanning apparatus which includes: a light source having a plurality of luminous points; a coupling lens configured to convert a plurality of beams from the light source into luminous flux; a deflector configured to deflect the luminous flux in a main scanning direction; a scanning lens configured to focus the luminous flux from the deflector onto a scanned surface so as to form an image; and a frame configured to support at least the light source and the coupling lens, the method comprising:
fixing the coupling lens to the frame; assembling the light source to a circuit board for supplying power to the light source; after assembling the light source to the circuit board, adjusting a position of the light source, relative to the coupling lens fixed to the frame, in an optical axis direction of the light source and in a direction perpendicular to the optical axis direction while the light source emits the light; after assembling the light source to the circuit board, adjusting a pitch between the plurality of beams in a sub-scanning direction perpendicular to the main scanning direction on the scanned surface by rotating the light source around the optical axis while the light source emits the light; and fixing the light source to the frame at the adjusted position and the adjusted pitch; wherein at least one of the position of the light source and the pitch is adjusted while power is supplied to the circuit board; and wherein the circuit board having the light source assembled thereon is fixed to the frame with an adhesive.