Photosensor apparatus and image forming apparatus

Details Photosensor apparatus and image forming apparatus Photosensor apparatus and image forming apparatus

2006-04-11

2006-04-11

Turner, Samuel A. (Department: 2877)

Optics: measuring and testing

Photometers

Photoelectric

C356S446000, C399S046000, C399S049000, C358S488000, C358S446000

Reexamination Certificate

active

07027139

ABSTRACT:
A photosensor apparatus includes a light receiving element that receives reflection light of light which is illuminated onto a reference pattern image formed on a moving member, a first illuminating unit that enters regular reflection light to the light receiving element, a second illuminating unit that enters diffuse reflection light to the light receiving element, and a light receiving optical system that conducts the regular reflection light and the diffuse reflection light to the light receiving element. Preferably, the light receiving optical system includes a lens, constitutes an image forming optical system that forms the reference pattern image on a light receiving plane of the light receiving element with respect to the diffuse reflection light, and enters to the light receiving plane of the light receiving element only a part of regular reflection light, which is reflected from substantially the same region where the diffuse reflection light is received.

REFERENCES:
patent: 5367379 (1994-11-01), Makino
patent: 5404156 (1995-04-01), Yamada et al.
patent: 5652655 (1997-07-01), Uno et al.
patent: 5729786 (1998-03-01), Yamada et al.
patent: 5764380 (1998-06-01), Noguchi
patent: 6122075 (2000-09-01), Yamada et al.
patent: 6169612 (2001-01-01), Deguchi
patent: 6633734 (2003-10-01), Maebashi et al.
patent: 6937826 (2005-08-01), Yamamoto et al.
patent: 63205588 (1988-08-01), None
patent: 63304275 (1988-12-01), None
patent: A-2000-047447 (2000-02-01), None
patent: A-2000-250304 (2000-09-01), None
patent: A-2002-244371 (2002-08-01), None

Affiliated with

Also associated with

Rating

Photosensor apparatus 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 Photosensor apparatus and image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photosensor apparatus and image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3597082