Scanning optical apparatus and image forming apparatus using...

Details Scanning optical apparatus and image forming apparatus using... Scanning optical apparatus and image forming apparatus using...

2007-09-25

2007-09-25

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S204200, C359S205100, C347S259000, C347S243000

Reexamination Certificate

active

10808442

ABSTRACT:
An object of the present invention is to prevent deterioration of image quality caused by ghost light generated from components of a scanning optical apparatus. In the present invention, an image writing light flux is related with a position at which ghost light appears and the exposure amount of the ghost light and a ghost light exposure amount on a surface to be scanned is calculated on comparison with an actual image signal, and the light quantity or the pulse width of a light flux emitted from a light source is controlled based on the calculated ghost light exposure amount.

REFERENCES:
patent: 5646767 (1997-07-01), Iima et al.
patent: 5946126 (1999-08-01), Takeuchi
patent: 6381057 (2002-04-01), Itabashi
patent: 2002/0018273 (2002-02-01), Iizuka
patent: 10-148781 (1998-06-01), None
patent: 2001-305459 (2001-10-01), None
patent: 3365869 (2003-01-01), None

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