Abstract: A method of and a device for driving a light shutter having an electrooptical effect to polarize an incident light by applying an electric field to the light shutter. When the light shutter is made activate, an excessive electric field in addition to a half-wave electric field which is a specific one to polarize an incident light at 90.degree. in the static characteristics of the light shutter is applied to the light shutter initially, and subsequently, the half-wave electric field only is applied to the light shutter. To discharge the electric charge accumulated in the light shutter, no voltage is applied to electrodes each of which is provided on the wall of the light shutter so as to oppose each other subsequent to the application of the electric field until the next application thereof.

Abstract: A driving device for a light shutter array having a plurality of serially aligned shutter elements each having an electro-optical effect to polarize an incident light by applying an electric field thereto. The device includes a plurality of individual electrodes each provided on a wall of a shutter element and a common electrode provided on an opposed wall of the shutter element. A driving pulse voltage is applied to the individual electrodes to activate the same according to recording data for turning ON/OFF the respective shutter elements in a first recording period and according to inverted recording data in a subsequent second recording period. The common electrode is grounded in the first recording period. A pulse voltage same as the driving pulse voltage is applied to the common electrode in the second recording period.

Abstract: The present invention relates to an image forming apparatus which comprises an optical shutter array having a plurality of optical shutters constructed of material possessing electro-optical effects, polarizing member provided on the entering light side of the optical shutter array, analyzing member provided on the exiting light side of the optical shutter array, actuation voltage impression means for applying an actuation voltage to the optical shutter array based on image signals, a photosensitive member on which an electrostatic latent image is formed by exposure to light transmitted through the optical shutter array, detecting means for detecting a decayed surface potential of the photosensitive member induced by light exposure, compensating means, when the detected value by the detecting means is greater than a predetermined reference value, for changing the actuation voltage applied to the optical shutters until said detected value is less than the reference value, control means, upon detection of the d

Abstract: An electrooptical light shutter device for use in an optical printer apparatus, comprising a number of shutter elements arrange in the form of at least one linear array, each of the shutter elements having an electrooptical effect, a polarizer disposed on a light-incoming side of the array of the shutter elements, and an analyzer disposed on a light-outgoing side of the array of the shutter elements, wherein the shutter elements have respective shutter windows through which light is to be passed selectively and the shutter windows are arranged to be overlapped by one another in a direction substantially perpendicular to the direction in which the shutter elements are arranged.

Abstract: An electro-optical light shutter device for use in electrophotographic printers or the like including an elongated plate having an electro-optical effect, a polarizer and an analyzer disposed on the light incident and emergent side of the plate, respectively. The plate is formed with a first groove extending longitudinally thereof, a second groove parallel to the first groove with a predetermined distance having a smaller depth than the first groove and a plurality of third grooves extending in a direction across the first and second grooves having a smaller depth than the first groove but a larger depth than the second groove, and provided with a plurality of projections aligned longitudinally thereof which are divided by the forming of the first, second and third grooves.

Abstract: An image-forming method suitable particularly for copying using image exposure wavelengths of 700 to 850 nm such as are experienced with semiconductor laser beam printers. Useful photosensitive members include photoconductive layer prepared from a dispersion of a photoconductive material including at least cadmium sulfide in a resin binder. The photosensitive member is sequentially subjected to a plurality of prehysteresis operations, each comprising electrostatically charging the member and uniformly exposing the same to light until the photosensitivity of the photosensitive member has been substantially stabilized.