Recorders – Light or beam recording – Including record receiver or handling means therefor
Patent
1990-11-07
1993-10-19
Reinhart, Mark J.
Recorders
Light or beam recording
Including record receiver or handling means therefor
358298, G01D 1514, H04N 123
Patent
active
052550133
ABSTRACT:
An LED Printhead having a row of LED's includes a binary architectured driver that drives each LED on for a series of sub-intervals related to a series of binary weighted recording clocking pulses to record a grey level pixel in accordance with an appropriate series of data bits latched in the driver. The series of data bits are formatted for presentation to the driver by a retransmit line buffer which transmits n times the data of one line of grey level pixels represented by n bits each to a process correction look-up table. Another look-up table provides a signal to the process look-up table as to the intensity characteristics of the particular LED which is to print the pixel. The corrected grey level data is then input to a multiplexer which selects one of the n bits for printing in accordance with count signals related to the binary weight of the recording clock pulses.
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Abiko, Nakamura, Chiba, and Nihei, "High Printing Quality LED Printheads", Journal of Imaging Technology, v. 12, No. 5, pp. 296-299, Oct. 1986.
Basile Joseph M.
Ng Yee S.
Yeh Hurjay
Eastman Kodak Company
Reinhart Mark J.
Rushefsky Norman
Yockey David
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