Abstract: Methods of making fluorescent pink toners are provided which comprise forming one or more fluorescent latexes which comprise a red fluorescent agent, a yellow fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent pink toner. Fluorescent pink toners and methods of using such toners are also provided.

Abstract: Methods of making fluorescent metallic toners are provided which comprise forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising aluminum flakes and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent metallic toner. Fluorescent metallic toners and methods of using such toners are also provided.

Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.

Abstract: The present invention relates to an electrostatic charge image developing toner having a ratio of TP2/TP1 of 1.47 to 2.35, wherein a first measurement value of a tan ? maximal value measured in 40° C. to 80° C. by a rheometer is set as the TP1, and a second measurement value of a tan ? maximal value measured in 40° C. to 80° C. by the rheometer is set as the TP2.

Abstract: A liquid developer containing toner particles and a carrier liquid, the toner particles containing a resin component, wherein the resin component includes a resin A and a resin B, the resin A has a unit Y1 represented by the formula (1) and a unit Y2 represented by the formula (2), the resin B has a unit Y3 represented by the formula (3) and a unit Y4 selected from the units represented by the formulae (4) to (8), the resin A has a unit Y2 content of 1% to 20% by mass, the resin B has a unit Y3 content of 5% to 90% by mass, the resin component has a resin A content of 50% to 99% by mass, and the resin component has a resin B content of 1% to 50% by mass.

Abstract: An electrophotographic photosensitive member, including a cylindrical support, a charge generating layer formed on the cylindrical support, and a charge transport layer formed on the charge generating layer, in which in the charge generating layer, when a region from a central position of an image forming region to an end position of the image forming region in an axis direction of the cylindrical support is divided equally into five regions, film thicknesses of the charge generating layers in each of the regions satisfy a specific relationship with each other, and in the charge transport layer, when a region from the central position of the image forming region to the end position of the image forming region in the axis direction of the cylindrical support is divided equally into five regions, film thicknesses of the charge transport layers in each of the regions satisfy a specific relationship with each other.

Abstract: The present invention aims to provide an electrophotographic photoreceptor excellent in abrasion resistance and electrical properties, which uses polymers excellent in surface-active functions such as fluororesin dispersibility and electrical properties, and relates to an electrophotographic photoreceptor which contains a polymer containing a repeating unit represented by the following Formula (A1), provided that the definitions of X1, X2, R11 to R16 in Formula (A1), and R21 in Formula (A2) are shown in the specification

Abstract: A method for printing a three-dimensional part with an electrophotography-based additive manufacturing system having an electrophotography engine, a transfer medium, and a layer transfusion assembly includes providing a part material to the electrophotography-based additive manufacturing system, the part material compositionally comprising a charge control agent, and a thermoplastic material having a heat deflection temperature greater than about 150° C., and has a powder form. The method includes triboelectrically charging the part material to a Q/M ratio having a negative charge or a positive charge, and a magnitude ranging from about 5 micro-Coulombs/gram to about 50 micro-Coulombs/gram and developing layers of the three-dimensional part from the charged part material with the electrophotography engine.

Abstract: A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.

Abstract: A photoconductor for electrophotography includes a base member; an anodic oxide coating provided on the base member and having a film thickness of 2 to 10 ?m; an interlayer provided on the anodic oxide coating and containing a vinyl chloride-vinyl acetate copolymer resin and having a film thickness of 0.02 to 0.3 ?m; and a photosensitive layer including a charge transport layer formed on the interlayer and containing a charge transport material and a first resin binder, and a charge generation layer laminated on the charge transport layer and containing a charge generation material, a hole transport material, a first electron transport material that is a naphthalenetetracarboxylic diimide compound, a second electron transport material that is an azoquinone compound, a diphenoquinone compound, or a stilbenequinone compound and that has a mobility of 17×10?8 cm2/V·s or more, and a second resin binder.

Abstract: Herein is described a method of producing a printed label. The method may comprise: a. providing a label substrate having a first surface and a second surface, wherein the first and second surfaces form opposing surfaces of the label substrate; b. applying a primer comprising a cross-linkable primer resin onto the first surface of a label substrate to form a primer layer; c. electrophotographically printing onto the primer layer an electrostatic ink composition comprising a cross-linkable thermoplastic resin to form a printed layer; d. applying a cross-linking composition comprising a cross-linking agent to the printed layer, wherein the cross-linking agent penetrates into the electrostatic ink composition and the primer layer; and e. activating the cross-linking agent wherein an adhesive is present on the second surface of the label substrate in step a or applied to the second surface of the label substrate at any point in the method after step a. Printed labels are also described herein.

Abstract: A toner includes toner particles. The toner particles each include a toner mother particle containing a binder resin and an external additive. The external additive includes resin particles. The toner mother particles have a chargeability opposite to a chargeability of the resin particles. Each of the resin particles has an embedded portion embedded in a surface portion of the toner mother particle and a protruding portion protruding outward from the toner mother particle in a radial direction of the toner mother particle. In a cross section of the resin particle, a relationship 0.60?LA/(LA+LB)?0.80 is satisfied where LA represents a maximum length of the embedded portion in the radial direction of the toner mother particle and LB represents a maximum length of the protruding portion in the radial direction of the toner mother particle.

Abstract: The electrophotographic photosensitive member includes: a support; a charge-generating layer; and a charge-transporting layer, the charge-generating layer and the charge-transporting layer being arranged on the support, wherein a surface layer of the electrophotographic photosensitive member contains: inorganic particles having an average particle diameter (L?) of primary particles of 5 nm or more and 50 nm or less; and resin particles having an average particle diameter (L?) of primary particles of 0.1 ?m or more and 5.0 ?m or less, and wherein in any cross-section of the surface layer, “(Sm?)/(S?)?0.3” is satisfied, where a region within (L?/2) from a surface of each of the resin particles is defined as a region (M), a sum of cross-sectional areas of the inorganic particles in the any cross-section is represented by (S?), and a sum of cross-sectional areas of the inorganic particles that are included in the region (M) is represented by (Sm?).

Abstract: A toner including a toner particle containing a binder resin, wherein the binder resin contains a crystalline resin, and in viscoelasticity measurement of the toner with Tp being a peak temperature of an endothermic peak derived from the crystalline resin in DSC of the toner, given G?(Tp?5, 0.01 Hz) as a storage modulus at a temperature of Tp?5° C. and a frequency of 0.01 Hz, G?(Tp?5, 10 Hz) as a storage modulus at a temperature of Tp?5° C. and a frequency of 10 Hz, and G?(Tp?30, 10 Hz) as a storage modulus at a temperature of Tp?30° C. and a frequency of 10 Hz, the following formulae are satisfied: G?(Tp?30,10 Hz)/G?(Tp?5,0.01 Hz)?1.40 G?(Tp?5,10 Hz)/G?(Tp?5,0.01 Hz)?2.20.

Abstract: A toner comprising a toner particle including a binder resin and a colorant and an external additive, wherein the external additive contains an external additive A having a Feret diameter of 60 to 200 nm, the external additive A is inorganic fine particles or organic-inorganic composite fine particles, adhesion index of the external additive A to the toner is 0.00 to 3.00, and penetration depth b and protrusion height c satisfy Relational expressions (1) and (2) below, where b (nm) denotes penetration depth of the external additive A, at a portion of the external additive A penetrating into the toner particle interior from the surface thereof, and c (nm) denotes a protrusion height of the external additive A at that portion, in an observation of an image resulting from image processing of a cross section of the toner using TEM; 60?b+c?200??(1), 0.15?b/(b+c)?0.30??(2).

Abstract: A carrier for forming an electrophotographic image is provided. The carrier includes a core particle comprising a manganese-based ferrite particle having an apparent density of from 2.0 to 2.2 g/cm3 and a magnetization of from 44 to 52 emu/g in a magnetic field of 500 Oe; and a coating layer coating a surface of the core particle. The coating layer contains a carbon black, an inorganic particle A, and an inorganic particle B. The inorganic particle A and the carbon black each have a concentration gradient in a thickness direction of the coating layer. A concentration of the inorganic particle A increases toward a surface of the coating layer, and a concentration of the carbon black decreases toward the surface of the coating layer.

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-containing resin particle and a fluorine-based graft polymer having a fluorinated alkyl group. A ratio of an amount of a fluorine-based graft polymer separated from the fluorine-containing resin particle to a total amount of the fluorine-based graft polymer in the outermost surface layer is 15% or less.

Abstract: Provided is a magenta toner which is more excellent in durability in a high temperature and high humidity environment than conventional ones. The magenta toner comprises a binder resin, a magenta colorant, a release agent and an external additive. The release agent has a maximum endothermic peak in a range of from 70° C. to 80° C. during temperature increase, in a DSC curve measured by a differential scanning calorimeter. Needle-shaped oxide fine particles having an average long diameter of from 30 nm to 500 nm and an aspect ratio of from 4 to 20 are contained therein. Zinc stearate particles having a number average primary particle diameter of from 0.1 ?m to 5 ?m are contained at an amount of from 0.01 part by mass to 0.5 part by mass with respect to 100 parts by mass of the colored resin particles, as the external additives.

Abstract: A single-layer photosensitive layer of an electrophotographic photosensitive member contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The charge generating material is a phthalocyanine pigment. A content percentage of the phthalocyanine pigment relative to the mass of the photosensitive layer is at least 0.70% by mass and no greater than 1.40% by mass. A film thickness of the photosensitive layer is at least 25 ?m and no greater than 32 ?m. A charge amount difference ?Q is no greater than 6.50 ?C.

Abstract: The toner has a toner particle that contains a binder resin, wherein the binder resin contains a styrene-acrylic resin that has a structure derived from a crosslinking agent, the binder resin includes tetrahydrofuran-insoluble matter in an amount of from 5 mass % to 60 mass % of the binder resin, and the crosslinking agent contains a polymeric compound provided by an addition reaction at least between a particular multifunctional (meth)acrylate compound and a particular polyvalent mercapto compound.