Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2006-11-28
2006-11-28
Cherry, Euncha P. (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
Reexamination Certificate
active
07142338
ABSTRACT:
It is an object of the present invention to provide an optical multi-beam scanning device and an image forming apparatus which adopt a horizontal synchronization sensor and can suppress displacement in a horizontal scanning direction even when latent images are written on a surface to be scanned by a plurality of light beams tilting with respect to the surface to be scanned.In the optical multi-beam scanning device of the present invention, when the light beams are assumed to reach the surface to be scanned with the light beams not being folded, the horizontal synchronization sensor is tilted so as to output a horizontal synchronized signal when the light beams come to the same position on the surface to be scanned in the horizontal scanning direction. In another method, the horizontal synchronization sensor is not tilted, and the similar function is executed by setting a boundary position between a shielding portion and a non-shielding portion of a light shielding member provided on an upper stream side. The image forming apparatus of the present invention adopts the optical multi-beam scanning device of the present invention.
REFERENCES:
patent: 6194713 (2001-02-01), Kanazawa
patent: 6229656 (2001-05-01), Omura
patent: 6501585 (2002-12-01), Shiraishi et al.
patent: 2003/0043441 (2003-03-01), Azami et al.
patent: 11-194285 (1999-07-01), None
patent: 2002-267968 (2002-09-01), None
patent: 3367313 (2002-11-01), None
patent: 2003-222811 (2003-08-01), None
Cherry Euncha P.
Foley & Lardner LLP
Kabushiki Kaisha Toshiba
Toshiba Tec Kabushiki Kaisha
LandOfFree
Optical multi-beam scanning device and image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical multi-beam scanning device and image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical multi-beam scanning device and image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3693744