Abstract: Disclosed herein are polyurethane elastomers and shaped articles prepared therefrom comprising charge-control agents to provide electrical conductivity to the elastomers, thereby allowing for their use in electrophotographic processes. The elastomers comprise a polyisocyanate prepolymer, a polyether prepolymer, and a hardener mixture comprised of at least one additional polyol and a charge-control agent. When used in an electrophotographic process, the elastomers are capable of exhibiting resistivities of less than 6×109 ohm-cm for 600,000 images or more.

Abstract: A method for preparing a coating solution containing a cocrystallized titanyl phthalocyanine-titanyl fluorophthalocyanine, the method comprising: dry milling a charge-generation pigment or mixtures of charge-generation pigments; increasing the amorphousness of the pigment mixture as determined by X-ray crystallography using X-radiation characteristic of Cu K? at a wavelength of 1.

Abstract: The invention relates to a method of forming electrophotographic prints comprising providing an image receiving element with writable toner receiver layer on each side, wherein each of said toner receiver layers comprises thermoplastic polymer and a fuser-oil sorbent additive present in an amount of 10% of said toner receiver layer, forming a toner image on at least one side of said image receiving element, fusing said at least one toner image, passing said image receiving element through a belt fuser with an image bearing side of said image receiving element against said belt fuser to provide a belt fused element having a glossy surface on the side of said receiving element adjacent said belt fuser while the other side remains a writable surface.

Abstract: A shelf label assembly includes a support, a display, and a printable overlay, wherein the printable overlay has a window through which the display can be viewed. The display can be written or rewritten electronically, and the overlay can be printed.

Abstract: Disclosed are fuser members, apparatus and methods which employ compositions that can be varied to provide a fused toner image with a selected gloss level. In embodiments, the apparatus and methods employ a fusing member having an outer contact surface thereon which contacts a previously fused toner image under conditions of elevated temperature and pressure. The contact surface has a Gardner G60 gloss of up to about 35 and is comprised of a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin, such as polyfluoroethylenepropylene (FEP). In embodiments, the contact surface comprises a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin including subunits of: —(CH2 CF2)x-, —(CF2CF(CF3))y-, and —(CF2 CF2)z-, wherein: x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 89 mole percent, z is from 10 to 89 mole percent, and x+y+z equals 100 mole percent.

Abstract: A process for fusing toner to paper. The toner fusing system for conducting this process includes a fuser roller consisting of a base, and a fusing surface layer that includes both a fluoroelastomer continuous phase, and also a discontinuous phase dispersed through the continuous phase in the form of domains.

Abstract: UV-glossing for simplex and duplex prints, wherein an input member having thereon a pre-gloss toner image including UV-curable toner is moved, in non-slip association with a smooth UV-transparent web, jointly with the web through a plurality of process zones sequentially including a heating zone and an exposure zone, thereby producing an output member having a glossed, UV-cured, surface. In the heating zone, at least the outermost toner of the pre-gloss toner image is heated to a molten state in contact with the web. In the exposure zone, with the molten state being maintained, at least the outermost toner which contacts the web is cured by a flux of UV radiation transmitted through the web. In a preferred embodiment, the UV-curable toner is formed as an outer layer on the pre-gloss toner image.

Abstract: A process for the preparation of colored polymeric toner particles includes: forming an organic phase by dissolving an organic polymer and, optionally, one or more additives in a water-immiscible organic solvent; forming a dispersion by combining the organic phase with an aqueous phase comprising a particulate stabilizer, a colorant, and, optionally, a promoter, with the proviso that when the colorant is carbon black, it is an acidic carbon black having a pH less than 7; homogenizing the dispersion to form droplets containing the organic solvent, organic polymer, and colorant; removing the organic solvent from the droplets to form colored polymeric toner particles; and separating and drying the toner particles.

Abstract: A toner fuser member contains a substrate on which is disposed a toner release surface layer formed from a composition that includes a silsesquioxane and a curable epoxy resin. On curing, the composition forms an interpenetrating polymer network of the silsesquioxane and cured epoxy resin.

Abstract: A polyorganosiloxane block hydrocarbyl block polymer having utility as a release agent in toner fusing systems. The polymer has one or more polar linkages, with each such linkage bonding a polyorganosiloxane block and a hydrocarbyl block, and also including a polar functionality.

Abstract: Gloss, differential gloss, and image relief of a printed image may be controlled by utilizing a combination of technologies in the appropriate manner. These technologies include the use of transparent toner overcoats, negative transparent toner masks, variable screen transparent toner screen masks, UV coaters, and post-press belt fusing. Unlike conventional systems, which may increase gloss at a cost of also increasing image relief, the present invention may produce an image having a controlled gloss, differential gloss, and image relief.

Abstract: A replaceable fuser member including a thin, seamless or welded high temperature nickel sleeve, a base cushion positioned around the sleeve, a primer coat of a silane coupling agent containing epoxies on the sleeve, and an outside coating applied over the base cushion elastomer layer. The sleeve is replaceable on a mandrel positioned in an electrophotographic copying machine in a fuser station of the electrophotographic copying machine.

Abstract: Toner particles having at least one toner resin and at least one polyalkylene wax or a wax having a percent crystallinity of 80% or more are described. The wax that is present in the toner particles has a polydispersity of 2.0 or higher or a percent crystallinity of 80% or more, and also preferably has a number average molecular weight of about 2,000 or higher and/or a melting temperature onset of from about 115° C. to about 130° C. Development systems using the toner particles of the present invention are further described. Also, improvements in various properties associated with development systems are further described such as reduced toner dust levels as well as improved toner image abrasion resistance.

Abstract: Disclosed are fuser members, apparatus and methods which employ compositions that can be varied to provide a fused toner image with a selected gloss level. In embodiments, the apparatus and methods employ a fusing member having an outer contact surface thereon which contacts a previously fused toner image under conditions of elevated temperature and pressure. The contact surface has a Gardner G60 gloss of up to about 35 and is comprised of a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin, such as polyfluoroethylenepropylene (FEP). In embodiments, the contact surface comprises a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin including subunits of: —(CH2CF2)x-, —(CF2CF(CF3))y-, and —(CF2CF2)z-, wherein: x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 89 mole percent, z is from 10 to 89 mole percent, and x+y+z equals 100 mole percent.

Abstract: A molecular complex for application to fuser members in toner fusing systems. The complex is formed from molecules with complementary acid and base functional groups. These groups interact to provide a noncovalent bond having a bond energy of about 20 kJ/mol or more.

Abstract: Branched monofunctional polysiloxanes are disclosed having the general formula: X-(Da)-(DbTc), wherein X-(Da) is a linear moiety and (DbTc) is a branched moiety; X a substituted or unsubstituted, monovalent or divalent hydrocarbon having a functional group; R5 and R6 are independently halogenated or unhalogenated monovalent hydrocarbon or substituted or unsubstituted divalent hydrocarbon; T is (R7)dSiO(4-d)/2 R7 is a substituted or unsubstituted monovalent hydrocarbon; wherein the branched polysiloxane is end-capped by R8 is a substituted or unsubstituted monovalent hydrocarbon; a is 1 to 300, b is 25 to 5000, c is 1 to 100, d is 0 or 1; and Tc is randomly distributed in the branched polysiloxane. Additionally, processes for preparing such polysiloxanes, and coating compositions comprising the same is provided. A fuser member and substrate comprising a branched monofunctional polysiloxane of the above formula are also disclosed.

Abstract: A layer for an article, including a fluoroelastomer, and at least about 25 percent by volume nonfibrillatable and autoadhesive plastic particles.

Abstract: Toner particles are described containing at least one toner resin and at least one wax. The wax present in the toner particles has an average domain size of about 1 micron or less. Developer systems, two component and monocomponent, are further described as well development systems and methods for developing an electrostatic image.

Abstract: A method of making a fuser member having a support comprising the steps of: A) providing a support; B) coating from an organic solvent onto the support a coating composition comprising a fluorocarbon thermoplastic random copolymer, a curing agent having a bisphenol residue, a particulate filler containing zinc oxide, an aminosiloxane, and antimony-doped tin oxide particles, the fluorocarbon thermoplastic random copolymer having subunits of: —(CH2CF2)x—, —(CF2CF(CF3)y—, and —(CF2CF2)z—, wherein x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent, x+y+z equals 100 mole percent; and C) curing the coating composition for 5 to 10 hours at a temperature in the range of 25° C. to 275° C.

Abstract: In a process for forming a nanoparticulate crystalline titanium phthalocyanine pigment composition, a titanium phthalocyanine pigment is contacted with substantially pure 1,1,2-trichloroethane (TCE) under conditions effective to convert the titanium phthalocyanine pigment to the nanoparticulate crystalline composition.