Extension of dynamic range for continuous tone laser printers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 23, 1993
Grant Date -
N/A
app pub date -
Apr 8, 1991
filing date -
Apr 8, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The dynamic range of a continuous tone laser printer is extended by directly modulating a diode laser while simultaneously modulating the optical output of the diode laser with an acousto-optic modulator. The digital image value is input to two look-up tables (LUTs) that convert the image value to two digital words; one to set the power level of the diode laser, and the other to set the diffraction efficiency of the acousto-optic modulator (AOM). The first look-up table is constructed from the performance characteristics of the diode laser, and the second look-up table is constructed from the performance characteristics of the AOM. The look-up table digital outputs are applied to respective digital to analog converters whose analog outputs respectively drive a voltage to current driver for the diode laser and a radio frequency dirver for the AOM. The resulting power of the writing laser beam is a linear function of the input image value.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully