Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director comprised of an ionic or zwitterionic quaternary ammonium block copolymer ammonium block copolymer, and wherein the number average molecular weight thereof of said charge director is from about 70,000 to about 200,000.

Abstract: A device for applying an electrical charge to a charge retentive surface by transporting ions in a fluid media and transferring the ions to the member to be charged across the fluid media/charge retentive surface interface. The fluid media is positioned in contact with a charge retentive surface for depositing ions onto the charge retentive surface. In one specific embodiment, the fluid media is a ferrofluid material wherein a magnet is utilized to control the position of the fluid media, which, in turn, can be utilized to selectively control the activation of the charging process.

Abstract: A humidity detector with a supporting substrate and a ladder polymer coating, which can be utilized in xerographic imaging and printing apparatuses.

Abstract: A photoconductive imaging member comprised of a supporting substrate, a photogenerating layer comprised of a ladder polymer selected from the group consisting of those represented by the following formulas: ##STR1## and mixtures thereof, wherein n represents the number of segments, and a charge transport layer.

Abstract: A photoresponsive imaging member comprised of a photogenerating layer, and a charge transport layer comprised of a mixture of a biphenyl diamine and a polysilylene.

Abstract: A photoconductive imaging member comprised of a photogenerating layer and a hole transport layer, including aryl amines dispersed in resin binders containing a polyphosphazene, such as poly[bis(p-tolylamino)]polyphosphazene, poly[bis(naphthoxy)]polyphosphazene, or mixtures thereof.

Abstract: Disclosed is a process for the preparation of chalcogenide alloys, particularly selenium tellurium alloys, of high purify wherein there is provided a solution mixture of the aforementioned compounds; and thereafter this mixture is subjected to a simultaneous oxidation reaction.

Abstract: A layered photoresponsive imaging member comprised of a supporting substrate; an amorphous photoconductive layer and a hole transport layer dispersed in a resinous binder, which layer is formulated from a solution mixture; and wherein the photoconductive layer is prepared by a process which comprises dissolving an inorganic photoconductive component in a solvent, removing the suspended particles therefrom, depositing the resulting solution on the supporting substrate, and subsequently heating the aforementioned member.

Abstract: An improved layered photoresponsive imaging member comprised of a supporting substrate, a photogenerating layer, and an electron transporting layer comprised of an inorganic photoconductive composition chemically modified to enable enhancement of the electron transport properties thereof.

Abstract: Disclosed is a process for improving the electron transporting properties of selenium, or selenium alloys, by (1) providing a source of selenium, or selenium alloy, (2) treating the selenium, or selenium alloy with hydrazine contained in an organic solvent in an amount of from about 0.1 percent by volume to about 15 percent by volume, (3) heating the resulting mixture to a temperature of from about 50 degrees centigrade to about 120 degrees centigrade, wherein there results selenium or a selenium alloy have homogeneously and permanently absorbed thereon hydrazine.

Abstract: An electrophotographic imaging system utilizing a member comprising at least one photoconductive layer and an overcoating layer comprising a film forming continuous phase comprising charge transport molecules and finely divided charge injection enabling particles dispersed in the continuous phase, the insulating overcoating layer being substantially transparent to activating radiation to which the photoconductive layer is sensitive and substantially electrically insulating at low electrical fields.

Abstract: Photoconductive compositions comprising an organic photoconductive material, an activator capable of forming a charge transfer complex with the photoconductive material, and a protonic acid. Imaging members provided with an imaging layer prepared from the above composition are highly light sensitive, requiring only brief exposure times, and exhibit a photoinduced state of elevated conductivity which persists long after exposure to light is terminated. These compositions can be returned to their relatively insulative state by merely subjecting the imaging layer to heat in the dark, thereby erasing this photoinduced image pattern of elevated conductivity.

Abstract: Electrostatographic imaging method employing an imaging member provided with a photoconductive imaging layer containing an organic photoconductive material, an activator capable of forming a charge transfer complex with said material and a protonic acid sensitizer. The acid sensitization of the charge transfer complex in this imaging layer dramatically enhances the photosensitivity of this photoconductive composition and yet avoids the undesirable memory effects generally experienced in such materials when a photoconductive layer of these materials is imaged in accord with the method of this invention.