Electro-optic line printer

Details Electro-optic line printer Electro-optic line printer

1980-09-17

1983-06-21

Hix, L. T.

Recorders

Electric recording

Electrochemical

346108, 350356, G01D 1500, G01D 946, G02F 101

Patent

active

043896596

ABSTRACT:
In an electro-optic line printer having a light valve comprising an electro-optic element with a plurality of individually addressable electrodes, sample and hold circuits maintain the data samples for each line of an image on the electrodes for essentially a full line printing time to increase the exposure contrast. A multiplexer may be used to ripple the data samples of a serial data stream onto the electrodes, and the polarity of the data samples applied to the electrodes may be occassionally reversed to prevent optical damage to the electro-optic element. Moreover, a pair of longitudinally displaced and laterally staggered electrode arrays may be used in light valves which rely on fringe fields to avoid electrode aligned blind spots.

REFERENCES:
patent: 3829608 (1974-07-01), Pietermaat et al.
patent: 4281904 (1981-08-01), Sprague et al.
"Light Gates Give Data Recorder Improved Hardcopy Resolution" Electronic Design, Jul. 19, 1979, pp. 31-32.
"Polarizing Filters Plot Analog Waveforms", Machine Design vol. 51, No. 17, Jul. 26, 1979 p. 62.
"Data Recorder Eliminates Problem of Linearity" Design News, Feb. 4, 1980, pp. 56-57.

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