Abstract: The invention provides a method of manufacturing the substrate of an electrochromic display cell as a result of which the ionic conductor of the cell cannot come into contact with the transparent conductive elements which form part of this substrate. A transparent conductive layer, a layer of an electrochromic material and a layer of photosensitive material having a positive action are deposited in turn on a transparent plate. A network of conductive elements is formed by etching away the electrochromic layer and the conductive layer through a mask constituted by the photosensitive material which is selectively exposed and developed. The electrochromic material is then etched away through a second mask formed by the same photosensitive material selectively exposed and developed a second time. This second mask is also used for the deposition of a layer of dielectric material. The conductive elements are thus covered with a continuous layer of dielectric material and of electrochromic material.

Abstract: Disclosed is a method for preparing an original for projection by using a transfer film comprising a transparent plastic film substrate, an undercoating layer composed of an electrically conductive resin and having a surface resistance of 1.0.times.10.sup.6 to 9.0.times.10.sup.9 .OMEGA., and a toner receiving layer composed of a binder resin and having a surface resistance of 1.0.times.10.sup.10 to 1.0.times.10.sup.14 .OMEGA., which is formed on at least one surface of the transparent plastic film substrate through the undercoating layer.An original for projection which is excellent in the surface smoothness and image characteristics can be obtained by electrostatically transferring an image of a one-component type magnetic developer on a photosensitive plate for the electrostatic photography, onto the toner receiving layer of the above transfer film and bringing the transferred developer image into contact with a roller under application of a pressure to fix the developer image on the toner receiving layer.

Abstract: This invention is generally directed to inorganic overcoated photoresponsive devices comprised of a substrate, a layer of hole injecting material capable of injecting holes into a layer on its surface, this layer being comprised of trigonal selenium, a hole transport layer in operative contact with the hole injecting layer, this layer being comprised of a halogen doped selenium arsenic alloy, wherein the percentage by weight of selenium present is from about 99.5 percent to about 99.9 percent, the percentage by weight of arsenic present is from about 0.1 percent to about 0.5 percent, and the halogen is present in an amount of from about 10 parts per million, to about 200 parts per million; a charge generating layer overcoated on the hole transport layer, comprised of an inorganic photoconductive material; and a layer of insulating organic resin overlaying the charge generating layer.

Abstract: Disclosed is an improved toner composition comprised of a colorant and a copolycarbonate resin, which toner has an intrinsic viscosity of from about 0.10 to about 0.6 dl/gr. (deciliters per gram) a melt flow temperature (T.sub.f) of from about 70.degree. C. to about 125.degree. C., a flash fusing energy of from about 3 J/in..sup.2 to about 8 J/in..sup.2, (Joules per inch squared), and a glass transition temperature of from about 50.degree. C. to about 65.degree. C.

Abstract: An electrostatic latent image residing on an electrically insulating surface used to induce a similar image on a sectionally conductive member by bringing one surface of the sectionally conductive member into proximity with the latent image while the opposite surface of the sectionally conductive member is brought to ground potential. The sectionally conductive member is then removed from proximity with the latent image. To prevent electrical breakdown during removal, a grounded electrode is placed adjacent the surface of the sectionally conductive member opposite the latent image but separated from the sectionally conductive member by a thin electrically insulating layer. A latent image is thus formed on the sectionally conductive member which can be developed by conventional means such as with electroscopic materials well known in the xerographic art.

Abstract: Cadium sulfide for electrophotography is produced by reacting hydrogen sulfide with a solution containing cadmium sulfate, sulfuric acid and hydrochloric acid of a low concentration, and then firing the resulting cadmium sulfide without adding a donor impurity other than that derived from the hydrochloric acid.

Abstract: An electrophotographic member in which a photoconductive layer and a protective layer are superposed in order on a photoconductive support, wherein the improvement comprises:said protective layer containing at least one metallocene or a compound having at least one metallocene nucleus in its molecular structure.

Abstract: A compound of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and represent an alkyl group or combine with the nitrogen atom to form a ring, and X represents a pyridyl group, a quinolyl group, or a pyridyl or quinolyl group substituted by at least one alkyl or alkoxy group; a process for preparing the compound and an electrophotographic material containing the same.

Abstract: This specification discloses an electrophotographic method and apparatus for forming an electrostatic latent image on a photosensitive medium having a conductive layer, a photoconductive layer and an insulating layer. The method comprises a primary charging step, an image light exposure step, a secondary charging step, a tone regulating step and a whole surface exposure step.

Abstract: In an electrically activatable recording element, such as one comprising an electrically conductive support having thereon, in sequence: (a) a polymeric electrically active conductive (EAC) layer, (b) an electrically activatable recording layer comprising (A) a dye-forming coupler, and (B) an oxidation-reduction combination comprising (i) an organic silver salt oxidizing agent, such as a silver salt of a 1,2,4-mercaptotriazole derivative, with (ii) a reducing agent which, in its oxidized form, forms a dye with the dye-forming coupler, (c) a photoconductive layer separated from (b) by an air gap of up to 20 microns, and (d) an electrically conductive layer; improvements are provided by means of a polymeric EAC layer (a) comprising a halogen containing polyester, such as poly(2,2'-oxydiethylene:2,2'-dimethyl 1,3-propylene 50:50-2,5-dibromoterephthalate) and poly(ethylene:2,2-dimethyl-1,3-propylene 50:50-2,5-dibromoterephthalate).

Abstract: A core steel reinforcement for window guide channels or the like is disclosed made from thin strip steel and having high strength and rigidity. It has marginal portions or areas in the shape of corrugations of inverted substantially V-shaped cross-section, and a longitudinal median portion or central carrier formed to provide spaced elevations or embossments alternating with indentations or embossments, which aid in the bending or forming of the strip to curvatures both longitudinally and transversely required to conform to those at the corners of automobile windows and the like.

Abstract: A sensitizing dye and a hydrophilic resin are dissolved in a first solvent, and a second solvent is added to the solution. The second solvent is less volatile than the first solvent, miscible therewith and does not dissolve both of the sensitizing dye and the hydrophilic resin. A powder of the sensitized zinc oxide is incorporated into the solution. After blending, the mixture is dried and pulverized to obtain a powder of sensitized zinc oxide. This powder is then mixed with a bonding agent consisting of a resinous material having an acid value of 5-30 to form a mixture which is formed into a thin photosensitive layer for use in electrophotography.

Abstract: An imaging method, and novel materials, in which there is provided an imaging mono-layer comprising a plurality of electrically photosensitive particles which comprise a resin carrier, a colorant dye, an electrically photosensitive organic material, a sensitizing dye, and a solubilizing agent for the sensitizing dye in the organic material. The imaging mono-layer is subjected to an electric field, exposed to a pattern of sensitizing electromagnetic radiation, separation of the photosensitized particles from the unsensitized particles, and color-amplification of the desired image by imbibing the colorant dye into a suitable substrate.

Abstract: A motion picture film having a plurality of digitally coded soundtracks which are colorless and transparent to visible light and which fluoresce when exposed to ultraviolet light, unexposed film for providing the product, and the method for producing the product and methods for producing the exposed and unexposed films. The soundtrack images which overlie at least a portion of the visible image area of the film are digitally coded on the film using an electrostatic imaging system to imprint a fluorescent toner. The toner may comprise a fluorescent polymer having covalently bonded 3-phenyl-7-(amido or imido)-coumarin or certain substituted stilbenes or N-alkyl-4-aminonaphalimides.

Abstract: To prepare a masking agent resistant to temperature, one adds silica powder to a photoresist. The mixture thus obtained is used to produce selective deposition of a layer of material on a substrate. The mixture of photoresist and silica powder serves as a photo-sensitive protective material which is then eliminated partially by selective exposure to light and use of a photographic developer. The temperatures involved in the deposition of the layer of desired material, for instance tin oxide, are about 500.degree. C. (deposition in the vapor phase), and the photo-sensitive material would be liable to destruction if it did not contain silica powder. It is then necessary, once the deposition of the desired material has been effected, to increase the temperature of the workpiece up to about 540.degree. C. to destroy and, hence, to eliminate the protective material.

Abstract: A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises an electrically inactive organic resinous material containing from about 10 to about 75 percent by weight of: ##STR1## The above compound has the chemical name bis(4-diethylamino-2-methylphenyl)-4-diphenylaminophenyl methane. The charge transport layer while substantially non-absorbing in the spectral region of intended use is "active" in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.

Abstract: This invention relates to a single component magnetic tone containing an epoxy resin and a magnetic pigment, particularly iron oxide pigments, which have been treated with surface reactive coupling materials, selected from organic titanates and lechithin, which treatment results in a magnetic toner where the melt flow temperature of such a toner is below 110.degree. C., and preferably between about 90.degree. C. and 105.degree. C. Also described is a method for the development of magnetic images which involves causing the formation of a magnetic latent image on a magnetizable recording medium, developing the image with the above toner, followed by transferring the image to a suitable substrate, and subsequently permanently fusing the image to said substrate by heat.

Abstract: The present invention relates to a photosensitive element for electrophotography comprising on an electrically conductive support a charge carrier generating phase and a charge carrier transport phase containing a P-type organic semiconductor, a poly-N-vinylcarbazole and/or its derivative, a Lewis Acid and a Bronsted acid.

Abstract: An electrophotographic element comprising, in successive layers; a conductive substrate, a charge generation layer and a charge transport layer, the charge generation layer being formed by the steps of; adding to a dispersion comprising a photoconductive organic pigment, a solvent and a resin being superior in mutual solubility with said solvent a resinous solution comprising said solvent and a resin being relatively inferior in mutual solubility with said solvent to the former resin; dispersing (or stirring) the resulting mixture again, thereby obtaining a photoconductive organic pigment-dispersed resinous solution; and applying said resinous solution onto the conductive substrate and drying.

Abstract: A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises an electrically inactive organic resinous material containing from about 10 to about 75 percent by weight of: ##STR1## R.sub.1 is selected from the group consisting of hydrogen (ortho) CH.sub.3, (meta) CH.sub.3, (para) CH.sub.3, and R.sub.2 is selected from the group consisting of hydrogen, (ortho) CH.sub.3, (meta) CH.sub.3, and (para) CH.sub.3. The charge transport layer while substantially non-absorbing in the spectral region of intended use is "active" in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer.