Laser scanning unit and image forming apparatus having the same

Details Laser scanning unit and image forming apparatus having the same Laser scanning unit and image forming apparatus having the same

2007-08-31

2009-12-29

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07639411

ABSTRACT:
A light source provided with a laser element that emits a laser beam emits a laser beam for synchronization control. A synchronization mirror reflects the laser beam so as to allow a light receiving element in the light source to detect the laser beam. The synchronization mirror is provided on f-θ lenses opposite to a light deflector, such that the f-θ lenses are provided neither on a light beam path that connects the light source and the light deflector nor on a light beam path for synchronization control that connects the light deflector and the synchronization mirror.

REFERENCES:
patent: 2003/0234856 (2003-12-01), Jin
patent: 3-245115 (1991-10-01), None
English language Abstract of JP 3-245115.

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