Electrostatic printer having an array of optical modulating grat

Details Electrostatic printer having an array of optical modulating grat Electrostatic printer having an array of optical modulating grat

1996-12-24

2000-02-15

Barlow, John

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

B41J 2415, B41J 2385, G03G 1304

Patent

active

060258594

ABSTRACT:
An image forming apparatus includes a grating light valve (GLV) optical modulating device for modulating light projected by a monochromatic light source unit so that the light thus modulated is projected onto a photosensitive drum. This arrangement enables printing at a higher speed and high-quality printing using half tone. In the GLV optical modulator, a first GLV element row and a second GLV element row, each having a plurality of GLV elements provided at spaces, each space being smaller than a width of each GLV element, are provided parallel so that GLV elements constituting the first and second element rows are provided in a staggered manner.

REFERENCES:
patent: 4460907 (1984-07-01), Nelson
patent: 5299289 (1994-03-01), Omae et al.
patent: 5311360 (1994-05-01), Bloom et al.
Apte, et al. "Grating Light Valves For High Resolution Displays", Solid State Sensors and Actuators Workshop, Hilton Head Island, SC, Jun. 13-16, 1994, pp. 1-7.

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