Abstract: An organic photoreceptor that includes:(a) a charge transport compound having the formula ##STR1## where n is an integer between 2 and 6, inclusive; R.sup.1 and R.sup.2, independently, are an alkyl group, a cycloalkyl group, or an aryl group, or R.sup.1 and R.sup.2 combine with the nitrogen atom to form a ring;Y is a bond, a carbon atom, a --CR.sup.3 group, an aryl group, a cycloalkyl group, or a cyclosiloxyl group;R.sup.3 is hydrogen, an alkyl group, or an aryl group; andX is a linking group having the formula --(CH.sub.2).sub.m -- where m is an integer between 4 and 10, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, or an ester group;(b) a charge generating compound; and(c) an electroconductive substrate.

Abstract: An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer which is formed on the support and contains as an effective component an aromatic polycarbonate resin having a structural unit of formula (I), or the structural unit of formula (I) and a structural unit of formula (II): ##STR1## wherein Ar.sup.1 to Ar.sup.5, R.sup.1, and X are as specified in the specification.

Abstract: An electrophotographic imaging member includinga supporting substrate,an undercoat layer,a charge generating layer comprisingphotoconductive pigment particles,film forming binder anda charge transport layer formed from a coating solution, the coating solution comprising charge transporting molecules, the charge transporting molecules comprising a major amount of a first charge transport molecule comprising an alkyl derivative of an arylamine and a minor amount of second transport molecule comprising an alkyloxy derivative of an arylamine.the charge generating layer being located between the substrate and the charge transport layer. A process for fabricating this imaging member is also disclosed.

Abstract: A mono-component developing method, comprising the steps of:supplying a mono-component developing agent containing a toner onto a developer-supporting member that is aligned face to face with an image-supporting member;regulating the developing agent on the developer-supporting member by a regulating member installed in contact with the developer-supporting member; anddeveloping an electrostatic latent image formed on the image-supporting member by the toner,wherein the toner has a weight-average particle size (d.sub.50) in the range of 4 to 10 .mu.m, an average degree of roundness of not less than 0.950 and a standard deviation of degree of roundness of not more than 0.040, and more preferably the toner has a specific value of a surface shape characteristic D/d.sub.50, and a specific ratio d.sub.50 /Ra of the toner weight-average particle size (d.sub.50) to the surface roughness (Ra) of the developer-supporting member.

Abstract: The present invention relates to a non-magnetic toner for developing electrostatic latent images, having;an average degree of roundness of not less than 0.960,a standard deviation of degree of roundness of not more than 0.040,a value of D/d.sub.50 of not less than 0.40, in which D=6/(.rho..multidot.S) (.rho. is a true density of toner (g/cm.sup.3), and S is a BET specific surface area of toner (m.sup.2 /g)); d.sub.50 is an average weight particle size of toner, andan adhesive stress of 6 g/cm.sup.2 or less under a compression of 1 kg/cm.sup.2. The non-magnetic toner for developing electrostatic latent images provides high-quality images not only in low-speed areas, but also in high-speed areas, and has a superior transferring properties.

Abstract: An image forming method including the steps of providing a black toner, a yellow toner, a magenta toner and a cyan toner, wherein each toner includes a binder resin, a colorant and an external additive, wherein the external additive contains a silica, and wherein the content by weight of the external additive in the black toner is greater than any one of those in the yellow, magenta and cyan toner; developing an electrostatic latent image formed on an image bearing member with one of the toners to form a toner image; repeating the developing operation mentioned above using the other toners; transferring the toner images to a receiving material; and heating the toner images using a non-contact fixing device to fix the toner images.

Abstract: A process including:forming a first image on a first substrate with a liquid toner comprising a resin, a colorant, a carrier liquid, and an adhesion promoting compound;transferring the image from the first substrate to a second substrate;overcoating the image on the second substrate with a transparent overcoat layer, andtreating the resulting overcoated image.

Abstract: A method of forming an image for transferring, to a predetermined recording medium, a toner image transported to a transfer position by a toner image support for supporting the toner image and transporting the image from a predetermined toner image forming position to a predetermined toner image transfer position, wherein the method comprises the steps of:adhering a transported toner image to the recording medium, and transferring and fixing the image under heating; andusing a recording medium which has a thermoplastic light transmissive resin layer disposed on the surface of a substrate, and in which a tensile modulus of elasticity E (N/mm.sup.2) in a cross direction (CD direction) of the substrate of the recording medium and a thickness (t) mm of the substrate satisfy the following relation (1):E.multidot.t.sup.3 .gtoreq.8(N.multidot.

Abstract: A process including:mixing a resin, and a mixture of a first wax and a second wax; andgrinding and classifying.

Abstract: A method for forming an image is provided, in which a failure in transfer during image retransfer and peeling of toner are prevented, and a sufficiently excellent image is formed on a retransfer medium. In this method for forming an image, in which an image transferred onto a transfer material, having a polyvinyl-alcohol layer formed on a supporting member, according to an electrophotographic method is first fixed, and is again transferred onto a transfer medium, a resin layer having a surface tension, which is closer to a surface tension of a binding resin of a toner to be fixed than a surface tension of polyvinyl alcohol, is provided on a surface of the transfer medium.

Abstract: An electrophotographic toner excellent in fixing properties at a low temperature, resistance to offsetting and shelflife and suitable for a heat-fixing method can be provided by an electrophotographic toner containing, as a binder, a polyester resin having a carbodiimide crosslink or an electrophotographic toner containing a carbidiimide-crosslinked polyester resin and a low melting point compound having a melting initiation temperature of 60 to 100.degree. C.

Abstract: This invention relates to a toner for electrophotography which develops an electrostatically charged image, the toner at least containing a coloring agent, a binder resin, a charge control agent, and a functioning agent, wherein low molecular weight polyolefin wax obtained by a metallocene type polymerization catalyst is contained as the function imparting agent. The toner of the invention is excellent in fixability, and has offset preventing properties, heat response characteristic, anti-spent toner properties, and storage stability, which can thus obtain a sharp, high quality image.

Abstract: A yellow toner including:a resin, anda colorant comprising a mixture of a yellow pigment and a yellow dye, wherein the combined weight of the colorant is from about 1 to about 50 weight percent of the total weight of the toner, and wherein the chroma of developed toner is from about 90 to about 130 CIELAB units.

Abstract: An object of the present invention is to provide an electrophotographic developer having a good fluidity, an excellent shelf stability, and a lesser reduction in image quality under various conditions.An electrophotographic one component nonmagnetic developer includes toner particles obtained by polymerizing a polymerizable monomer component, such as styrene, methacrylate, acrylate and the like, and outer-additives, such as silicon dioxide particles, on the toner particles. The developer has pH of 4 to 7 measured by a decoction method, and .sigma.2 of not more than 20 .mu.S/cm and .sigma.2-.sigma.1 of 0 to 10 .mu.S/cm, in which .sigma.1 is an electric conductivity of water, .sigma.2 is an electric conductivity measured by a decoction method.

Abstract: In an image forming method for forming multi-color images or full-color images, first to third or fourth toners are used, and the amount of cross-linking agent contained in each of the toners becomes larger in the order of the toners laid on a recording sheet. Each of the toners has a color different from the others, the color selected from yellow, cyan, magenta and black.

Abstract: A carrier comprised of a core and thereover a polymer generated from the reaction of a component containing amine groups and a component containing epoxy groups.

Abstract: There is disclosed a process for forming a photosensitive imaging member including positioning a substrate and an electrode in an electrolytic solution to form a galvanic cell and electrochemically graining the substrate surface in the absence of an external power source to provide a substrate surface roughness sufficient to substantially suppress the formation of a pattern of light and dark interference fringes upon exposure of the photosensitive imaging member to a light source.

Abstract: A first selenium-arsenic layer of a photoconductor, deposited on a conductive substrate, has a thickness and arsenic concentration effective to preserve an electrically charged surface potential in darkness and to transport carriers generated on exposure to light. The first layer is between 20 to 70 .mu.m thick. A second amorphous selenium-arsenic alloy layer, formed on the first layer, generates carriers on exposure to light. The surface roughness, Rmax., of the conductive substrate is less than or equal to 0.5 .mu.m. The first layer, or both of the photoconductive layers, are doped with iodine. When both layers contain iodine, the iodine content of the second layer is equal to or less than that of the first layer. The thickness of the second layer is between 5 to 30 .mu.m. The arsenic content of the amorphous selenium-arsenic alloy of the second layer is equal to or greater than that in the first layer. After deposition of the first and second layers, the photoconductor is heat treated at between 100.

Abstract: An electrophotographic photoconductor includes an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a structural unit of formula (I), or in combination with a structural unit of formula (II): ##STR1## wherein R, R.sup.1, and X are as specified in the specification.

Abstract: A powder toner composition includes a particulate synthetic thermoplastic material, refractory metal oxides, and a powder lubricant. The particulate synthetic thermoplastic material is surface coated with a blend of the refractory metal oxides and the powder lubricant. At least one of the refractory metal oxides is surface-treated. The powder compositions exhibit fluid properties when subjected to mechanical agitation or aeration, and settle as compacted solids when agitation/aeration ceases. The compositions exhibit behavior substantially free of slugging, channeling and jetting when aerated.