Fixing method of collimator lens to housing, optical scanning device, and image forming apparatus

Abstract

The invention provides a fixing method of collimator lens to housing, an optical scanning device and an image forming apparatus. A setting jig to which a housing is set is prepared, a light diameter detection sensor for detecting a light diameter of light beam is arranged, instead of a photosensitive drum, at a position corresponding to a part at which the light beam is scanned on the photosensitive drum, the housing is set to the setting jig, an adhesive is coated on a lens fixing surface of the housing, a collimator lens is grasped by a grasping member to adjust a position of the collimator lens, and the adhesive coated on the lens fixing surface is hardened. When the housing is set to the setting jig, the housing is obliquely arranged such that the light diameter detection sensor does not interfere with the grasping member. The lens fixing surface is formed to be horizontal in a state in which the housing has been set to the setting jig. The collimator lens is fixed in an accuracy to the lens fixing surface of the housing.

Description

technical field [0001] The present invention relates to a method for fixing a collimator lens used in an optical scanning device to a box, an optical scanning device, and an image forming device. Background technique [0002] Generally, an optical scanning device is mounted on an electrophotographic image forming apparatus such as a laser printer. The optical scanning device makes, for example, light emitted from a light source such as a semiconductor laser incident on a rotating polygon mirror, and scans and forms the light deflected by the rotating polygon mirror on the peripheral surface of the photosensitive drum through an imaging lens (fθ lens). A collimating lens is disposed between the light source and the rotating polygon mirror, and the collimating lens performs parallel processing on the light emitted from the light source. [0003] As a method of fixing the above-mentioned collimator lens to the housing, a method using an adhesive has been proposed. In this met...

AI Technical Summary

Problems solved by technology

As a result, the amount of shrinkage during the curing of the adhesive cannot be properly managed, and the fixing accuracy of the collimator lens decreases.

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