Abstract: A negatively-chargeable dry electrostatographic developer is disclosed containing fluorinated inorganic microparticles, and toner particles comprising an acidic binder resin having an acid value between 10 and 30 mg KOH/G and not comprising (a) charge-controlling agent(s). The developers according to this invention show excellent fluidity and have improved negative chargeability. According to a preferred mode, fluorinated silica-type microparticles are added to the developer as free flowing additive in an amount of 0.1 to 5% by weight with respect to the toner, which preferably comprises an acidic carbon black.

Abstract: A developer for developing electrostatic images is constituted by toner containing a binder resin and a charge controller. The charge controller comprises an arylurea compound which is an arylurea having at least one electron-attracting group or electron-donating group, or a polyarylurea including such an arylurea as a recurring unit. The arylurea compound is substantially colorless and can have stable but different levels of triboelectric chargeability depending on the substituents.

Abstract: A layered photoconductive imaging member comprised of a supporting substrate, a photogenerating layer comprised of titanyl phthalocyanine photogenerating pigments and thereover a charge transport layer, and wherein said photogenerating pigments are prepared by a process which comprises the formation of a slurry comprised of dihalotitanium phthalocyanine in a mixture comprised of a trihaloacetic acid and an alkylene chloride; adding the resultant slurry to a mixture of an aliphatic alcohol and water enabling hydrolysis whereby Type X oxytitanium phthalocyanine is obtained; separating the Type X oxytitanium phthalocyanine from the slurry; and thereafter subjecting the Type X oxytitanium phthalocyanine obtained to treatment with a halobenzene, followed by the separation of Type IV oxytitanium phthalocyanine photogenerating pigments.

Abstract: A process for the preparation of toner compositions with excellent humidity characteristics and comprised of resin particles, and pigment particles which comprises adding thereto metal oxide particles surface treated with a metal salt complex charge enhancing additive.

Abstract: An electrophotographic imaging member including a charge generation layer and a hole transport layer, at least the charge generation layer or charge transport layer comprising a polyarylamine polymer represented by the following formula: ##STR1## wherein: n is between about 5 and about 5,000p is between about 5 and about 5,000X' and X" are independently selected from a group having bifunctional linkages, andQ is a divalent group derived from certain hydroxy terminated arylamine reactants.

Abstract: The present invention provides a polyolefinic resin-coated carrier having a rough surface and containing a core material in a quantity of 90 or more % by weight. Said resin-coated layer may contain fine particles having a charge-controlling function and/or electrically conductive fine particles as additives.

Abstract: An electrophotographic lithograhic printing plater precursor which utilizes an elecrophotographic light-sensitive material comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein the binder resin contains at least one AB block copolymer composed of an A block comprising a polymer component corresponding to a monofunctional monomer containing a functional group which has at least one atom selected from a fluorine atom and a silicon atom and is capable of forming at least one hydrophilic group selected from a sulfo group, a phosphono group, a carboxy group and a hydroxy group through decomposition, and a B block containing at least a polymer component represented by general formula (I) described herein.

Abstract: An electrophotographic lithographic printing plate precursor which utilizes an electrophotographic light-sensitive material comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein the binder resin contains at least one graft-type copolymer comprising at least (1) a monofunctional monomer containing a functional group which has at least one atom selected from a fluorine atom and a silicon atom and is capable of forming at least one hydrophilic group selected from a sulfo group, a phosphono group, a carboxy group and a hydroxy group through decomposition, and (2) a monofunctional macromonomer which has a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4, and has a polymerizable double bond group represented by the general formula (I) described herein bonded to only one terminal of the main chain thereof.

Abstract: Releasing compositions, comprising at least one polyolefinic resin selected from the group consisting of[1] a polypropylene resin having a melt viscosity of at most 1000 cps at 160.degree. C. and having an isotactic content of at least 90%,[2] an organo silane-modified polyolefin resin, and[3] an organo fluorine-modified polyolefin resin,are suitable for use in electrophotographic toners and are capable of providing high hot offset temperature without reducing flowability of toners.

Abstract: A method and composition for improving hole mobility in electrophotographic photoreceptors and other devices that comprises using certain polymers as binders.

Abstract: Electrostatographic toners and developers are provided containing styrene-acrylic copolymer binders and charge-control agents comprising fluorinated .beta.-diketone metal complexes having the structure: ##STR1## where R is alkyl or aryl,M is calcium, barium or zinc, andn is a positive number up to 7.

Abstract: An electrophotographic toner containing a specific compound as the charge control agent is described. The electrophotographic toner according to the present invention have a sharper distribution of the amount of electrification and better moisture resistance and time stability than those of a toner wherein a conventional charge control agent is used. Therefore it can provide an image having a very high gradation and has a very high capability of repeatedly forming an image. Since the charge control agent, as such, is essentially colorless, a colorant can freely be selected according to a hue required of a color toner and the toner is not detrimental to the hue inherent in a dye and a pigment.

Abstract: Liquid toner compositions for electrostatic imaging comprise carrier liquid, colorant particles and charge director(s), as well as charge priming agent(s) selected from alkoxides of aluminum and zirconium.

Abstract: Disclosed are a two-component type developer for use in the electrophotography or electrostatic printing, which comprises a magnetic carrier and a toner, and a process for the preparation thereof. This developer has a dynamic resistivity (Rd) lower than the dynamic resistivity (Rc) of the magnetic carrier. This developer is prepared by mixing a toner with a magnetic carrier so that the dynamic resistivity (Rd) of the formed developer is lower than the dynamic resistivity (Rc) of the magnetic carrier. This developer is capable of realizing an excellent reproducibility of a fine line image and a high density of a solid image area simultaneously.

Abstract: Disclosed is a method for patterning a substrate. A laminate of an electrically non-conductive material, an electrically conductive material, and an additional electrically non-conductive material is xerographically processed so as to leave a toner image formed upon the surface of one of the non-conductives. The non-conducive and conductive are successively removed chemically in those areas not coated by the toner, leaving a conductive pattern replica of the original toner image. Subsequent processing yields an exposed conductive pattern overlaying a non-conductive supporting substrate. Xerographic processes includes photocopying and xerographic laser imaging from a low power laser printer. The laminate may be formed in a single step or may be the product of a commercial two layer laminate coated by a standard painting or sealing process.

Abstract: A process for the preparation of toner particles which comprises mixing at least one resin monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until partial polymerization has been accomplished; mixing with the aforementioned partially polymerized product pigment or dye particles, thereby forming an organic phase; dispersing the organic phase in water containing a stabilizing component whereby there is obtained a suspension of toner particles in water; and polymerizing the toner suspension.

Abstract: The printing materials of the invention includes a film or sheet prepared from a chlorinated polyethylene containing 10 to 50 wt. % of chlorine and obtained by chlorinating a polyethylene having a molecular weight of 10,000 to 200,000, or from a polymer mixture containing the chlorinated polyethylene; a laminate comprising the film or sheet, and a base material; and a product prepared by impregnating or coating a base material with a solution of the chlorinated polyethylene or the polymer mixture. With the latter two printing materials, the surface of the film or sheet is used as the surface to be printed on. The image fixing method of the invention for use in producing copies by electrostatic printing comprises forming a toner image on one of these printing materials, and thereafter treating the printing material with heat at 160.degree. to 250.degree. C. for 5 to 30 seconds.

Abstract: An imaged transparency comprised of a supporting substrate, oil absorbing layers comprised of, for example, chlorinated rubber, styrene-diene copolymers, alkylmethacrylate copolymers, ethylene-propylene copolymers; sodium carboxymethyl cellulose, or sodium carboxymethylhydroxyethyl cellulose; and ink receiving polymer layers comprised of, for example, vinyl alcohol/vinyl acetate, vinyl alcohol/vinyl butyral, or vinyl alcohol/vinyl acetate/vinyl chloride copolymers. The ink receiving layers may include therein, or thereon fillers such as silica, calcium carbonate, titanium dioxide.

Abstract: The invention provides a three-dimensional image forming method which comprises the steps of forming a desirable image on an image recroding material including a thermoexpansive material by using an image forming material including an infrared rays absorbing agent or metal aluminum fine particles, said infrared rays absorbing agent containing tin oxide, antimony oxide and/or indium oxide; and applying heat selectively to the desirable image area formed on said recording material, whereby the desirable image-existing area is protruded to effect the three-dimensional image recording.

Abstract: A toner bearing thermoplastic layer on a receiving sheet is textured or the gloss is improved by heating the thermoplastic layer from the rear to its glass transition temperature and contacting said sheet with a texturizing surface under sufficient pressure to texturize the layer. Offset of the thermoplastitc onto the pressure member contacting it is inhibited by not independently heating that member substantially above the glass transition temperature of the thermoplastic layer.