Abstract: A process for fusing a toner image to a substrate includes applying to a fuser member a replenishable layer containing a controlled amount of a wicking agent; the fuser member surface sites reactive to binding with Si--H functional groups included in an organopolysiloxane. The wicking agent have an organopolysiloxane having Si--H functional groups and at least about 1.times.10.sup.-6 weight percent of a metal compound that is effective for promoting reaction between the reactive sites on the fuser member surface and the Si--H functional groups of the organopolysiloxane. The toner image is contacted with a substrate at a temperature sufficient to fuse the toner image to the substrate.

Abstract: A fusing belt for thermoplastic electrostatographic toner comprises a seamless polyimide resin belt having an intermediate layer of a highly crosslinked silicone resin, which preferably contains a surfactant, and a surface layer of a silsesquioxane polymer, which also preferably contains a surfactant. The belt produces fused toner images of high gloss and has good release properties without the use of a release oil.

Abstract: This invention provides a method of increasing the gloss value of a fused toner image comprising the steps of:a) transferring toner to a receiver to make a toner bearing receiver; andb) passing the toner bearing receiver through a heated fuser system to create a fused toner image on a receiver; wherein said heated fuser system consists of a fuser roller and a pressure roller; said fuser roller has a surface roughness of less than or equal to 1.25 .mu.m Ra; said pressure roller comprises a metal core, and a fluoropolymer resin layer, said fluoropolymer resin layer has a thermal conductivity greater than 0.29 W/m.degree.C. and a surface energy less than or equal to 20 dyne/cm.

Abstract: A toner release agent composition for electrostatography comprises a polydialkoxysilane oil and a concentration of a nonionic surfactant that is effective to prevent or substantially suppress triboelectric charging of pressure and fuser members during fusion of thermoplastic toner on a receiver. The nonionic surfactant preferably comprises about 1 to 10 weight percent, more preferably about 2 to 5 weight percent, of the release agent composition.

Abstract: This invention provides a fuser member comprising a core having a polymeric coating wherein said wrinkle index of said fuser member is less than 75, said wrinkle index (WI) being calculated by the following formula: ##EQU1## where: S is the stiffness of the core in megaPascals (MPa);T is the thickness of said polymeric coating in millimeters (mm); andH is the hardness (Shore A) of the polymeric coating.

Abstract: This invention provides a fuser belt comprising a substrate and a coating on said substrate, said coating comprises a resin made by curing a composition comprising siloxanes having a ratio of difunctional to trifunctional units of 1:1 to 1:2.7 and at least 90% of total number of functional units in said siloxanes are difunctional and trifunctional units, a weight average molecular weight of 5,000 to 50,000 grams/mole, and an alkyl to aryl ratio of 1:0.1 to 1:1.2.

Abstract: There is provided a fuser member having as its outermost layer, a substantially homogeneous composite comprising:a) a continuous phase of a fluorocarbon elastomer selected from vinylidene fluoride based fluoroelastomers containing hexafluoropropylene and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene; andb) a discontinuous phase of a flourinated resin having a molecular weight between about 4,000 and 25,000.

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: ##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 aluminum 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 aluminum oxide has a concentration of from 20 to 40 percent of the total volume of the layer.

Abstract: Toner fusing members having a surface layer comprising a substrate coated with a fluorocarbon-silicone polymeric composition are obtained by concurrently curing a fluorocarbon copolymer, a nucleophilic fluorocarbon-curing agent and a heat-curable polyfunctional polymethylsiloxane polymer.

Abstract: Toner fusing members coated with cured epoxy-substituted organopolysiloxane compositions are obtained. Such epoxy-substituted organopolysiloxanes are obtained by hydride-addition of a hydride-substituted organopolysiloxane with an unsaturated epoxy compound.

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: 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: Toner fusing members with improved properties are formed with an outer layer comprising a melamine-cured block polyurethane coating composition. Such a (A-B).sub.n' block polyurethane is formed by polycondensation of a diisocyanate, an organopolysiloxane diol and a C.sub.2-20 diol.

Abstract: Toner fusing members with improved properties are formed with an outer layer comprising a melamine-cured polyurethane coating composition. Such a polyurethane is formed by polycondensation of a diisocyanate, and a polysiloxane diol containing units of 2,2-bis(4-hydroxyphenyl) hexafluoropropane.

Abstract: Disclosed are electron-transport polymeric liquid crystalline compounds having the formula (I) ##STR1## wherein A and B are alkylsubstituted siloxane or acrylate repeating units;S.sub.1 and S.sub.2 are alkylene spacer groups;L is a mesogenic group;ET is an electron-transport functionality; andx and y are integers, the ratio of x to y is from about 100 to about 0.1, the sum of x and y is from about 5 to about 100.Multi-active and single active electrophotographic elements comprising these compounds and electrophotographic processes are also disclosed.

Abstract: Disclosed are hole-transport polymeric liquid crystalline compounds having the formula (I) ##STR1## wherein A and B are alkylsubstituted siloxane or acrylate repeating units;S.sub.1 and S.sub.2 are alkylene spacer groups;L is a mesogenic group;HT is a hole-transport functionality; andx and y are integers, the ratio of x to y is from about 100 to about 0.1, the sum of x and y is from about 10 to about 500.Multi-active and single active electrophotographic elements comprising these compounds and electrophotographic processes are also disclosed.

Abstract: Toner fusing members coated with melamine-cured polyester-amide compositions are obtained wherein the polyester-amide component is a copolymer of one or more organic dicarboxylic acids with 2,2-bis(4-hydroxyphenyl)hexafluoropropane and an aminoalkyl-terminated organopolysiloxane.

Abstract: A novel polycyanogen (MW at least 500) is made by electrochemical polymerization of cyanogen in solution. Fiber and pyrolyzed forms of this polymer and methods of making same are also described.