Non-impact printer with nonuniformity correction

Details Non-impact printer with nonuniformity correction Non-impact printer with nonuniformity correction

1987-12-31

1989-06-06

Albritton, C. L.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358296, G01D 942

Patent

active

048375870

ABSTRACT:
A nonimpact print apparatus employing, for example, a printhead comprising a bank of light emitting diodes (LED's) provides correction for nonuniformities in light output of the LED's. A binary type of driver is provided for activating each LED in response to the presence of a data bit and a strobe pulse determines the period of activation. Certain LED's are additionally activated both before and after data activation using respective strobe pulses for correction for relative differences in emissions between such LED's and other LED's not requiring correction. The use of correction pulses prior to and subsequent to activation for the data pixel provides for more symmetrical exposure corrected dot-like image elements.

REFERENCES:
patent: 4367533 (1983-01-01), Wiener
patent: 4408868 (1983-10-01), Thomas et al.
patent: 4521814 (1985-06-01), Ono et al.
patent: 4621271 (1986-11-01), Brownstein
patent: 4623242 (1986-11-01), Hayashi et al.
patent: 4727428 (1988-02-01), Futatsugi et al.
patent: 4750010 (1988-06-01), Ayers
Research Disclosure, Nov. 1987, No. 28346, pp. 693-697.
T. Nishimura et al., Electrophotographic Color Printing Using Elliptical Laser Beam Scanning Method, Journal of Imaging Technology, vol. 12, No. 6, 1986, pp. 329-333.
N. Kawamura et al., Half-Tone Reproduction on Digital Color Printers Based on Electrophotography, Electrophotography, 24(3), pp. 2-11 (1985).

Affiliated with

Also associated with

Rating

Non-impact printer with nonuniformity correction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-impact printer with nonuniformity correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-impact printer with nonuniformity correction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-42844