Abstract: The invention provides a mixture of coated carrier particles suitable for use in dry electrographic developer wherein each of the types of carrier particles occupies a position in the triboelectric continuum different from the position of the other type and the level of charge to which the mixture of carrier particles charges the toner in a developer continuously increases or decreases between a high level in which said mixture comprises all of one type of carrier particles to a low level in which said mixture comprises all of the other type of carrier particles.This type of carrier provides a simple way to adjust the charge on the toner provided by the carrier, that is, more of one of the types of carrier particles in the mixture can be added to the toner to either increase or decrease the charge on the toner.

Abstract: A sulfone charge transport agent and a multilayered electrophotographic element in which at least one of said layers includes polymeric binder and the sulfone charge transport agent. The general structure of the charge transport agent is: ##STR1## R is alkyl or cycloalkyl having from 1 to about 10 carbons, or aryl or heteroaryl having a total of carbons and heteroatoms of from 6 to about 12. T is alkyl having from 1 to 4 carbons.

Abstract: The invention provides a fuser roll useful for heat-fixing an electrographic toner to a substrate, wherein the roll comprises a core having thereon a base cushion layer comprising a condensation-crosslinked poly(dimethylsiloxane) elastomer, characterized in that the base cushion layer has tin oxide particles dispersed therein in a concentration of from 20 to 40 percent of the total volume of the base cushion layer.The base cushion layer of such a fuser roll has been unexpectedly found to exhibit only minimal weight loss, creep, and changes in hardness, over time, when subjected to conditions of elevated temperature and cyclic stress.

Abstract: A fuser member having a core and a layer overlying the core. The layer includes: an addition crosslinked polyorganosiloxane elastomer, and tin oxide particles dispersed therein in a concentration of from 20 to 40 percent of the total volume of the layer.

Abstract: A fuser member having a core and a layer overlying said core. The layer comprises a crosslinked polydiphenylsiloxane-poly(dimethylsiloxane) elastomer having tin oxide particles dispersed therein in a concentration of from 20 to 40 percent of the total volume of the layer.

Abstract: A fusing member and a method for preparing such a fusing member are disclosed. The method has the steps of conversion coating a support member; applying a base cushion of thermally insulating silicone elastomer over the conversion coating; vulcanizing the base cushion; and baking the support member and the base cushion at a temperature in excess of the temperature necessary to vulcanize the base cushion in less than 5 minutes.

Abstract: This invention provides: A photoconductor element comprising:an electrically conductive layer, a charge generating material and an electron transport agent in a polymeric binder, said electron transport agent comprising at least one cyclic bis-dicarboximide compound of Formula (I): ##STR1## wherein: Q.sup.1 and Q.sup.2, which may be the same or different, represent branched alkyl; unsubstituted straight-chain alkyl; unsubstituted cyclic alkyl; alkyl-substituted cyclic alkyl; unsubstituted, straight-chain, unsaturated alkyl; or H, wherein Q.sup.1 and Q.sup.2 cannot both be H; andR.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, represent hydrogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, or halogen.

Abstract: A fuser member comprising a core and a layer overlying said core. The layer comprises a crosslinked polydiphenylsiloxane-poly(dimethylsiloxane) elastomer having zinc oxide particles dispersed therein in a concentration of from 20 to 40 percent of the total volume of the layer.

Abstract: A fuser member useful for heat-fixing an electrographic toner to a substrate. The fuser member has a core and a layer overlying the core. That layer includes a cured fluorocarbon random copolymer having subunits with the general structures:--(CH.sub.2 CF.sub.2).sub.x --, --(CF.sub.2 CF.sub.2).sub.z --,and ##STR1## where x is from 30 to 90 mole percent, y is from 10 to 70 mole percent, and z is from 0 to 34 mole percent. The layer incorporates particulate filler. The filler includes tin oxide and a material selected from the group consisting of alkali metal oxides, alkali metal hydroxides, and combinations thereof. The filler has a total concentration in the layer of from about 25 to 50 percent of the total volume of the layer. The tin oxide has a concentration of from 20 to 40 percent of the total volume of the layer.

Abstract: A fuser member useful for heat-fixing an electrographic toner to a substrate, a composition of matter and a preparation method. The fuser member has a core and a base cushion layer overlying the core. The base cushion layer includes a crosslinked poly(dimethylsiloxane-fluoroalkylsiloxane) elastomer that has tin oxide particles dispersed therein in a concentration of from 20 to 40 percent of the total volume of the base cushion layer.

Abstract: A system for orthopedic imaging is disclosed which consists of a supply of low crossover sensitometrically asymmetric radiographic elements and cassettes with various front and back intensifying screens to produce optimal bone images and useful images of surrounding flesh.

Abstract: Radiographic elements and assemblies are disclosed. The radiographic element has silver halide emulsion layer units coated on opposite sides of a film support, and are constructed to minimize crossover during exposure by the intensifying screens. The minimal crossover radiographic elements record both bone and soft tissue structure because a silver halide emulsion layer unit on one side of the support is chosen to exhibit an emission and contrast exceeding that of another silver halide emulsion layer unit on the opposite side of the support. Radiographic assemblies consisting of the radiographic elements and various front and back intensifying screens produce clear and useful X-ray images of the various bones and surrounding soft tissue structures of the body.

Abstract: New electrostatic toners and developers are provided containing new colorless charge-control agents comprising acyloxy-t-alkylated benzoic acids.

Abstract: Toner fusing members coated with melamine-cured phenolic polysfloxanes compositions are obtained. Such a phenolic polysiloxane is obtained by hydride-addition of a hydride-substituted polysiloxane with an alkenyl substituted phenol.

Abstract: A method is provided for non-electrostatically transferring dry toner particles which comprise a toner binder and have a particle size of 8 micrometers or less from the surface of an element to a receiver. The receiver comprises a substrate having a coating of a semi-crystalline polyester on a surface of the substrate. The semi-crystalline polyester has a glass transition temperature in a range of from approximately 5.degree. C. to 80.degree. C.; a melting temperature in a range of from approximately 40.degree. C. to 200.degree. C.; a weight average molecular weight in a range of from approximately 10,000 to 150,000; a number average molecular weight in a range of from approximately 5,000 to 75,000; a crystallinity of from approximately 5 to 25 percent by weight, based on the total weight of the polyester and a surface energy of from approximately 44 to 52 dynes/cm. The method involves preheating the receiver to a temperature ranging from approximately 70.degree. C. to 95.degree. C.