Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2005-05-25
2008-10-07
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S258000
Reexamination Certificate
active
07432947
ABSTRACT:
An electrophotographic imaging system and method employs an array of diffusive light sources, a first lens disposed to receive light emitted from two or more of the light sources of the array, an aperture plate disposed to receive light from the first lens, and a second lens disposed to receive the light after passing through the plurality of apertures and to focus the light onto an image plane. An optical scanner system and method employs a first lens disposed to receive light emitted from two or more image pixels on a document; an aperture plate disposed to receive light from the first lens, the aperture plate comprising a plurality of apertures each for passing light emitted by a respective one of the diffusive light sources of the array and for blocking light from other ones of the diffusive light sources; a second lens disposed to receive the light after passing through the plurality of apertures and to focus the light onto an image plane; and a photodetector disposed at the image plane to receive light from the second lens. The aperture plate includes a plurality of apertures each for passing light emitted by a respective one of the diffusive light sources of the array and for blocking light from other ones of the diffusive light sources. The first lens may be achromatic and the second lens may have a structure that eliminates chromatic aberration. The first lens can be cut in first planes at both edges with a distance from an axis of the first lens to make contact surfaces for adjacent first lenses. The first lens can also be cut in second planes orthogonal to the first planes. The array of light sources can comprise an interlaced layout of diffusive light sources, with the first lenses and the apertures arranged in a matching interlaced layout to that of the diffusive light sources.
REFERENCES:
patent: 4530574 (1985-07-01), Scifres et al.
patent: 4734734 (1988-03-01), Yano
patent: 5471236 (1995-11-01), Ito
patent: 5539444 (1996-07-01), Ikeda et al.
patent: 6369845 (2002-04-01), Kubota et al.
patent: 6646670 (2003-11-01), Toyohara et al.
patent: 2004/0169718 (2004-09-01), Yaji
patent: 2004/0233271 (2004-11-01), Nojima et al.
patent: 2004195676 (2004-07-01), None
patent: 2004195677 (2004-07-01), None
K. Matsuda, et al.; “High-speed Color Printer Engine,” OKI Technical Review, Apr. 2003/Issue 194 vol. 70, No. 2, pp. 34-37.
Dickinson Wright PLLC
Matsushita Electric - Industrial Co., Ltd.
Pham Hai C
LandOfFree
Apparatus and method of electrophotographic printing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method of electrophotographic printing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method of electrophotographic printing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4004111