Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1987-02-12
1990-07-03
Miller, Jr., George H.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
346107R, 350332, 358302, G02F 113, H04N 121, G01D 942
Patent
active
049395297
ABSTRACT:
Because the prior art liquid crystal driving control circuit needs shift registers, latch circuits and selectors in a number corresponding to the number of cells in the liquid crystal shutter array, the structure of the circuit inevitably becomes complicated and involves a large number of components to thereby push up the production cost. Since this invention method controls a liquid crystal shutter array with pulse width modulation, image data can be serially converted into the data necessary for switching ON/OFF the driving voltage, and the conversion circuit can be structured with only one system. As this invention method controls opening/closing of the cells with binary pulse width signals in a number corresponding to the number of liquid crystal cells, the structure of the circuit can be simplified and yet efficiency of recording in controlled gradation can be enhanced.
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Dynamic behavior of twisted nematic liquid-crystal layers in switched fields. J. Appl., Phys. 46(9), 3738-3745 (Sep. 1975) CODEN: Japia.
Kanayama Toshikiyo
Morimoto Ken-ichi
Fuji Photo Film Co. , Ltd.
Miller Jr. George H.
Tran Huan
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