Abstract: Electrically controlled color imaging with a mixture of electrophotosensitive particles of different color types is effected using a photoconductive insulator layer as a particle addressing electrode. A layer of such mixture adjacent the electrode is uniformly exposed by time-separated, different-color, light pulses and discrete portions of the photoconductor are selectively addressed, by activating radiation, in synchronization with the pulses and according to the image information of color image to be reproduced.

Abstract: A flexible latent image-bearing photoconductive element is driven through a U-shaped path to form a self-contained electrographic developer reservoir to which electrically conductive toner particles are supplied. A grounded, electrically conductive, apertured member positioned in the toner reservoir in close proximity to the image-bearing surface of the photoconductor imparts continuous motion to the toner particles as the image-bearing element moves therepast. The motion creates a sweeping action which reduces the amount of toner background present in a finished print.

Abstract: An apparatus for the liquid processing or development of a latent image on a photographic or electrostatic material utilizes a single liquid, usually referred to as a monobath, for developing the latent photographic image or a liquid developer, which comprises a liquid carrier and toner particles, for developing the latent electrostatic image.The apparatus comprises two members between which the material is clamped during the development process. The first member which is fixed, has an open-end chamber that is interconnected to two sources of air under pressure and to a reservoir for at least one processing fluid. This chamber is also provided with two concentrically arranged sealing means for retaining the processing fluid in proper relation to the image area being developed when the material is clamped between the two members.

Abstract: A galvanometer structure is disclosed for high speed deflection of a light beam, such as that from a laser source. A flexible member is secured at one end in a mount of electrically insulating and magnetically inert material, for example, a plastic block. At the free end of the flexible member, a rotor is secured and this, in turn, has fixed thereto a reflecting element, such as a mirror. The flexible member also carries a variable magnetic field producing means which is arranged relative to the flexible member and at the back side of the mirror. A controllable variable current source is connected to the coil on the flexible member. A portion of the flexible member is reduced in cross section at a distance that is intermediate the ends thereof for greater flexibility in the direction of the reduced cross section.