Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2008-07-22
2008-07-22
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S247000, C372S029011
Reexamination Certificate
active
07403215
ABSTRACT:
Laser driver systems and methods are provided for controlling a laser driver coupled to a suitable laser source. The laser driver comprises a plurality of current sources, including at least one bias current source and at least two switched current sources. To control the laser driver, a laser power control signal is provided for each switched current source that corresponds to a desired laser output power. An output power error measure is defined based upon an error between a measured laser output power and the desired laser output power for each switched current source and a control system is characterized in which the output power error measures combine to change a magnitude of each of the switched current sources and the bias current source(s) such that the output power error measures converge over time.
REFERENCES:
patent: 5027362 (1991-06-01), Hokanson et al.
patent: 5138623 (1992-08-01), Ema et al.
patent: 5651017 (1997-07-01), Genovese
patent: 5912694 (1999-06-01), Miyake et al.
patent: 6118798 (2000-09-01), Ema et al.
patent: 6266078 (2001-07-01), Koga et al.
patent: 6370175 (2002-04-01), Ikeda et al.
patent: 6907055 (2005-06-01), Morley et al.
patent: 6917639 (2005-07-01), Ishida et al.
Heink Philip Jerome
Klemer Daniel Richard
Tungate, Jr. Stanley Coy
Westerfield Eric Wayne
Lexmark International Inc.
Pham Hai C
Stevens & Showalter LLP
LandOfFree
Current driver and power control for electrophotographic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Current driver and power control for electrophotographic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current driver and power control for electrophotographic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2777056