Recording apparatus

Details Recording apparatus Recording apparatus

1984-09-12

1986-09-30

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346107R, 346154, 350332, 350333, G01D 1514, G01D 1506, G01D 942, G02F 113

Patent

active

046149546

ABSTRACT:
In a recording apparatus of this invention, liquid crystal light shutter operates by using the double frequency drive. The double frequency drive employs a higher frequency f.sub.H and lower frequency f.sub.L. The dielectric anisotropy becomes positive in the case of the lower frequency f.sub.L than crossover frequency f.sub.C and becomes negative in the case of the higher frequency f.sub.H than the frequency f.sub.C of liquid crystal material. The driver circuit of liquid crystal light shutter includes a delay circuit (146). Both a recording data delayed through the delay circuit (146) and a recording data formed without going through the delayed circuit (146) are produced in an LSI, to be supplied to write selecting electrodes and signal electrodes of the liquid crystal light shutter, thereby driving the liquid crystal light shutter in a time sharing manner.

REFERENCES:
patent: 4096486 (1978-06-01), Pfeifer et al.
patent: 4236150 (1980-11-01), Chern
patent: 4386836 (1983-06-01), Aoki et al.

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