Jan C Snyder

40514633, Sep 27, 1977

Jan 21, 1976

5/650826

Jan S. Snyder - Upland CA
Clark I. Bright - Kula Kai HI

Xerox Corporation - Stamford CT

G03G 1600

340173TP

Method and apparatus for inverting the polarity of an input image formed on a surface of an image recording device which deforms when illuminated in the presence of an electrostatic field applied thereacross. The image recording device, comprising a layered structure consisting of a conductive transparent substrate, a photoconductive layer, a deformable elastomer layer and a deformable, reflective layer is raster scanned by information containing light through the photoconductor layer with voltage applied between the conductive electrodes, the elastomer and deformable electrode being deformed in accordance with the input informaton. The image projected from the surface of the deformable electrode is positive, light characters on a dark background. In order to project a negative image (dark characters on a light background), the device is initially flooded with light through the photoconductor layer with voltage applied between the conductive electrodes. The voltage is then removed and the device is shorted for a predetermined time period.

41093160, Aug 22, 1978

Jan 21, 1976

5/650827

Jan S. Snyder - Upland CA

Xerox Corporation - Stamford CT

G11C 1300

365127

Method and apparatus for inverting the polarity of an input image formed on a surface of an image recording device which deforms when illuminated in the presence of an electrostatic field applied thereacross. The image recording device, comprising a layered structure consisting of a conductive transparent substrate, a photoconductive layer, a deformable elastomer layer and a deformable, reflective layer is raster scanned by information containing light through the photoconductor layer with voltage applied between the conductive electrodes, the elastomer and deformable electrode being deformed in accordance with the input information. The image projected from the surface of the deformable electrode is positive, light characters on a dark background. In order to project a negative image (dark characters on a light background), the device is initially flooded with light through the photoconductor layer with voltage applied between the conductive electrodes. The voltage is then removed for a predetermined time period.

40632229, Dec 13, 1977

Jan 21, 1976

5/650825

Jan S. Snyder - Upland CA
Clark I. Bright - Kula Kai HI

Xerox Corporation - Stamford CT

G03G 1600
G11C 1142

365126

Method and apparatus for selectively erasing information formed on the surface of image recording device which deforms when illuminated in the presence of an electrostatic field applied thereacross. The image recording device, comprising a layered structure consisting of a conductive transparent substrate, a photoconductive layer, a deformable elastomer layer and a deformable electrode, is initially raster scanned by information containing light on the photoconductor layer with voltage applied between the conductive electrodes whereby the elastomer and deformable electrode are deformed in accordance with the input information. For selective erasure, the voltage is removed and the device is short-circuited. With the device shorted, the area to be erased is scanned with the spot of light. The short is then removed and the voltage reapplied, the remainder of the information except for the area erased, being restored.