Abstract: An imaging apparatus in which an electrostatic latent image is developed on an insulating web at a development station after which the web is transported to a platen capable of supporting a receiving surface. The web is transported from the development location to the platen in a plane parallel to the axis of the platen. The image is then transferred to a receiving surface supported by the platen. The imaging, development and transfer are controlled by a control logic circuitry.

Abstract: Bistable deflection of a beam of light into and out from a layer of nematic liquid crystalline material having negative dielectric anisotropy and having a thickness of from about 1 micron to about 6 microns is achieved by providing the nematic liquid crystalline material in the parallel variable grating mode between two electrodes, the nematic being under an applied voltage between the two electrodes at a voltage level above the threshold voltage level for parallel variable diffraction mode for said nematic liquid crystalline material, and increasing and decreasing the applied voltage so that light diffracted by the parallel variable grating mode nematic is deflected at an angle which either exceeds or is less than the critical angle between the layer of nematic liquid crystalline material and one of the electrodes.

Abstract: In a magnetic scavenging system for recovering airborne magnetic toner from a magnetizable recording member, alternating polarity magnetic field producing means are provided in the path of flow of toner between a magnetic scavenger and a toner reservoir.

Abstract: A photoelectrophoretic image reproduction device wherein a suspension of electrically photosensitive particles in a fluid is provided between two transparent conductive plates. Exposure of the suspension to a light image while field is applied between the plates causes the formation of a viewable image by particles depositing in imagewise configuration on the plates. A dark suspension fluid may be used.

Abstract: A display device which responds to a light image to form a viewable image. The system is sealed and is filled with a fluid carrying a dilute suspension of particles between electrodes. A photoconductive layer is used on one electrode. Imagewise illumination of the photoconductive layer and application of electrical field between the two electrodes causes particle migration in image configuration which forms a visible image. Using a dark suspension may increase viewability.

Abstract: An imaging system is disclosed wherein unpigmented transparent xerographic toner images are used to make color and full color pictorial transparencies and selected hard copy according to specific toner-tacking methods.

Abstract: A method and apparatus for selectively transferring magnetic toner from a reservoir to the imaged areas of a copy web. The reservoir is used to develop a donor web in which a multiplicity of microfields have been recorded. The donor web is subsequently passed into non-contacting proximity to a copy web having a latent magnetic image thereon. The toner is selectively attracted to the stronger magnetic forces in the imaged areas of the copy web and remains on the donor web in the non-imaged areas. Another aspect of the invention provides for the neutralization of the donor web microfields prior to the toner transfer to enhance the development process.

Abstract: An optically addressed light valve is disclosed which is cabable of being read-out at very high light intensities during the write-in cycle without need for an optical blocking layer. The system is based on the combination of a reflective photoconductor and an electro-optically active medium and exploits the characteristics of space charge limited currents in photoconductors of high optical absorption of actinic wavelengths.

Abstract: An improved magnetic interpositive imaging method is provided by creating an electrostatic latent image in a photoconductive member comprising photoconductive material dispersed in a binder; developing by touchdown development said electrostatic latent image with toner comprising from about 10% to about 60% by volume hard magnetic material; fixing said toner to said photoconductive binder; magnetizing said fixed toner; and, transferring the magnetic signal from said magnetized, fixed toner by thermoremanent transfer of magnetization to a magnetizable recording medium.

Abstract: Photosensitive composition for use in photoelectrophoretic imaging system. The particulate component of this composition includes vanadyl phthalocyanine pigment particles which have been treated with a polymer having structural units of the formula ##STR1## WHEREIN Z is a pendant group of the formula ##STR2## X is a substituent substantially incapable of withdrawing electrons from the electron rich pyridinyl moiety;M is a whole number from 0 to 3; andN is a whole number in excess of 25.The intimate association of at least some of the polymer with at least some of the vanadyl phthalocyanine pigment is believed to effectively attenuate photoinjection of holes from the phthalocyanine pigment into the surrounding materials thereby both reducing the D.sub.min of the phthalocyanine pigment; and, to improve color separation of reproductions prepared by processes employing a subtractive color system.

Abstract: A thermoremanent magnetographic imaging apparatus is disclosed. The apparatus includes an imaging transfer station which thermoremanently copies a graphic representation from a slave web onto the magnetizable surface of a master web. The thermomagnetic transfer is produced by exposing the slave and master webs while in intimate contact to a single intense burst of radiation from a flash lamp. The flash lamp is coaxially located within a transparent cylindrical carriage means which peripherally supports the slave and master webs during a full frame transfer process. Dual locking assemblies firmly hold the slave web and master web motionless during the thermomagnetic process to aid in the prevention of registration problems.

Abstract: Apparatus for viewing latent magnetic images on recorded magnetizable recording members. The apparatus comprises means for advancing a magnetizable recording member bearing a latent magnetic image into a detection station at which a magneto-optic cell provides a visible display of the latent magnetic image. Optionally, a projection system directs light in reflection from the visible display to a back lighted projection screen.

Abstract: A thermoremanent imaging apparatus for magnetically recording graphic information is disclosed. An elongated light source with a substantial infra-red and visible radiation spectrum is used to produce a high energy flash exposure of a magnetic surface. The light source is co-axially located within a transparent cylindrical transport means which carries the magnetic surface around its periphery. A uniform intensity of energy from the flash exposure over the entire magnetic surface is provided by reflective energy deflecting means placed in opposition along the axis of the transport means.

Abstract: An imaging system comprising providing an imaging member comprising an agglomerable layer contacting a softenable layer and imagewise softening said member to cause relative transparentizing of said member in softened areas due to an agglomeration of the agglomerable layer in softened portions of said member.

Abstract: A magnetographic printing apparatus is disclosed which uses an electronically generated information stream to produce a visually readable image on a copy output medium. The high speed transfer of input information to the copy medium is accomplished by the direct writing of information pages with a magnetic write head less than the width of a page onto a magnetic buffer web. The latent magnetic image on the buffer web is transferred to a copy web wherein the pages are developed onto the copy medium at speeds approximating the direct writing time.

Abstract: An imaging system comprising an imaging member including a deformable metallic layer arranged between a pair of deformable layers, at least one of which comprises an elastomer material. In operation an electrical field is established across the deformable layers to cause deformation thereof in imagewise configuration. The imaging member may include photoconductive material and may include a pair of electrodes for establishing an electrical field across the deformable layers. In one embodiment the electrodes may comprise an electrical X-Y matrix address system.

Abstract: In an electrophoretic reproduction process wherein a colored reproduction of an original is obtained by sequentially electrophoretically generating at least two visible monochromatic images, and superimposing said images in registry upon a copy web to form a colored reproduction, an improvement is provided comprising essentially eliminating back migration of marking materials from the copy web to the imaging suspension in the second and subsequent image generating steps by employing, in each instance, marking materials comprising a solvent tackifiable polymer and a colorant and/or a copy web containing a solvent tackifiable polymer, and applying to the copy web at least a partial solvent for said tackifiable polymer in an amount sufficient to render said polymer at least partially tacky before the second and before each subsequent image generating step.

Abstract: A deformation imaging system including an imaging member comprising a layer of a surface deformable material, a layer of an elastomer material, and means for establishing an imagewise electrical field across at least the surface deformable material layer and/or the elastomer layer. Embodiments wherein the surface deformable material layer and the elastomer layer are adjacent each other and embodiments wherein these layers are separated from each other are described. Various techniques for subjecting the imaging members to an electrical field and imaging methods utilizing the imaging members are also disclosed.

Abstract: Coating applicator system comprising a stationary blade and a reciprocating applicator blade. A quantity of photoelectrophoretic ink is supplied to the surface of the stationary blade when the applicator plate is cammed out. When the applicator plate is cammed in, the applicator plate moves the ink on the stationary coater blade into the coating gap to supply a uniform quantity of ink to the surface to be coated.

Abstract: Graphic reproductions are achieved by the image-wise modification of the triboelectric charging capability of a surface followed by the triboelectric charging of the modified surface to produce a charge pattern corresponding to an image. The charge pattern may be developed with finely divided colored electroscopic particles and the resulting colored image either fixed on the surface of the insulating member or transferred to a receiving surface and fixed thereon.