Coherent light generators – Particular component circuitry
Reexamination Certificate
2005-12-14
2008-10-14
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular component circuitry
C372S038020, C372S038040, C372S038070
Reexamination Certificate
active
07436869
ABSTRACT:
This invention makes it possible to meet a requirement of high-quality image printing and high-speed driving of a semiconductor laser driver in a laser beam printer or the like while suppressing radiant noise. A laser circuit substrate includes a first wiring pattern and second wiring pattern connected to a main wiring pattern, a first circuit which is connected to the first wiring pattern and has a semiconductor laser element and a driving circuit for driving the semiconductor laser element, a second circuit which is connected to the second wiring pattern and compensates noise generated by the first circuit, a first capacitor which is connected to a first point in the first wiring pattern, and a second capacitor which is connected to a second point in the second wiring pattern. The positions of the first point and second point are set such that the sum of the impedances of the first wiring pattern and first circuit viewed from the first point, and the sum of the impedances of the second wiring pattern and second circuit viewed from the second point are substantially equal to each other.
REFERENCES:
patent: 3986117 (1976-10-01), Fry et al.
patent: 4838032 (1989-06-01), Maslaney et al.
patent: 6711189 (2004-03-01), Gilliland et al.
patent: 63-44782 (1988-02-01), None
Canon Kabushiki Kaisha
Morgan & Finnegan , LLP
Nguyen Dung T
LandOfFree
Laser circuit substrate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser circuit substrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser circuit substrate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3999617