Abstract: A toner including a toner particle that contains a binder resin, a polyester resin A and a wax, wherein the polyester resin A contains a specific amount of an isosorbide unit based on a total number of monomer units constituting the polyester resin A, the content of the polyester resin A is a specific amount, and when observing a cross-section of the toner, twenty toner particle cross-sections are selected that have a major axis R (?m) that satisfies a specific relationship with respect to the weight-average diameter D4 (?m) of the toner, each major axis r that have the largest major axis is measured for those domains composed of wax present in the selected toner particle cross-sections, and the arithmetic mean (r/R)st of the determined r/R satisfies a specific relationship.

Abstract: A liquid toner for printing conductive traces is provided. The liquid toner includes a carrier liquid and toner particles dispersed in the carrier liquid. The toner particles include a low symmetry electrically conducting material dispersed in a pigment.

Abstract: Toner particles each include a toner core, a shell layer covering a surface of the toner core, and a plurality of wax particles. The toner core contains a binder resin and does not contain a wax. The wax particles are each located on a surface of the shell layer. The toner core and each of the wax particles are bonded together through covalent bonds within the shell layer. The covalent bonds include a first amide bond and a second amide bond. The shell layer contains a vinyl resin. The vinyl resin includes a constitutional unit (1-1), a constitutional unit (1-2), and a constitutional unit (1-3). An amide bond included in the constitutional unit (1-1) is the first amide bond. An amide bond included in the constitutional unit (1-2) is the second amide bond.

Abstract: Provided is a toner having a toner particle containing a binder resin and a wax, wherein the wax concentrations near the outermost surface of the toner and in the surface layer region below the outermost surface are controlled, so that the wax moves with high efficiency to near the outermost surface during heating.

Abstract: An electrostatic latent image developing toner includes a plurality of toner particle each including a toner mother particle and silica particles attached to a surface of the toner mother particle. The toner mother particle includes a toner core and a shell layer. The shell layer includes a first domain substantially formed from a first resin and a second domain substantially formed from a second resin. Both the first resin and the silica particles have higher positive chargeability than the second resin. A shell coverage is at least 40% and no greater than 90%. The toner particles each have an average value of surface potentials measured using a scanning probe microscope of at least +50 mV and no greater than +350 mV and a standard deviation thereof of no greater than 120 mV.

Abstract: An electrophotographic photoreceptor includes a conductive support in which (i) a recessed portion having an opening diameter of greater than 400 ?m and (ii) a recessed portion having an opening diameter of from 100 ?m to 400 ?m and a ratio of a depth to an opening diameter of greater than 0.12 are not present on an outer peripheral surface, wherein even in a case where a first recessed portion having an opening diameter of from 100 ?m to 400 ?m and a ratio of a depth to an opening diameter of 0.12 or less is present on the outer peripheral surface of the conductive support and a second recessed portion on which the first recessed portion is reflected is present on the outer peripheral surface of an outermost layer, a ratio of a depth to an opening diameter of the second recessed portion is not greater than 0.030.

Abstract: A toner comprising a toner particle containing a crystalline polyester resin and an amorphous polyester resin, wherein, in a cross-sectional observation of the toner by transmission electron microscopy (TEM), the number-average diameter (D1) of major axis lengths of the crystalline polyester resin dispersed up to a depth of 0.30 ?m from a toner surface is 40 nm to 110 nm, and the number-average diameter (D1) of major axis lengths of the crystalline polyester resin dispersed deeper than 0.30 ?m from the toner surface is 1.25 to 4.00 times the number-average diameter (D1) of the major axis lengths of the crystalline polyester resin dispersed up to a depth of 0.30 ?m from the toner surface.

Abstract: Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.

Abstract: The present invention relates to a process for producing a toner for development of electrostatic images, including the following steps (1) to (3): Step (1): aggregating resin particles (X) containing a composite resin that contains a segment constituted of a polyester resin (a) obtained by polycondensing an alcohol component containing 80 mol % or more of a propyleneoxide adduct of bisphenol A and a polycarboxylic acid component, and a vinyl-based resin segment containing a constitutional unit derived from a styrene-based compound, in an aqueous medium, to obtain aggregated particles (1); Step (2): aggregating the aggregated particles (1) obtained in the step (1) with resin particles (Y) containing a polyester resin (b) obtained by polycondensing an alcohol component containing 80 mol % or more of an ethyleneoxide adduct of bisphenol A and a polycarboxylic acid component to obtain aggregated particles (2); and Step (3): coalescing the aggregated particles (2) obtained in the step (2).

Abstract: Provided is a toner for developing electrostatic images containing a toner particle. The toner particle contains a binder resin and a release agent. The binder resin contains a vinyl resin component and a crystalline polyester resin component. The vinyl resin component has a structural unit derived from an alkyl (meth)acrylate monomer represented by Formula (1): H2C?CR1—COOR2 ??Formula (1): In Formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 8 to 22 carbon atoms. The crystalline polyester resin component satisfies Formula (2): 5?|Cacid?Calcohol|?12 ??Formula (2): In Formula (2), Calcohol represents the number of carbon atoms of the main chain of a structural unit derived from a polyhydric alcohol and Cacid represents the number of carbon atoms of the main chain of a structural unit derived from a polyvalent carboxylic acid.

Abstract: A continuous flow process for producing coalesced toner particles from aggregated toner particles includes continuously flowing a slurry of aggregated toner particles having a size of from about 5 microns to about 7 microns through one or more heat exchangers, wherein a residence time in the one or more heat exchangers is from about 1 second to about 15 minutes, thereby producing coalesced toner particles having a circularity of from about 0.930 to about 0.990. The aggregated toner particles comprise a polymer resin, a colorant, an aggregating agent, and an optional wax.

Abstract: An electrostatic image developing toner contains: toner particles, first silica particles having an average equivalent circle diameter of 10 nm to 120 nm and second silica particles having a compressive agglomeration degree of 60% to 95%, a particle compression ratio of 0.20 to 0.40 and an average equivalent circle diameter being greater than the average equivalent circle diameter of the first silica particles.

Abstract: A toner including a binder resin, wherein a toner extract obtained by drying an extraction liquid obtained through Soxhlet extraction of the toner with tetrahydrofuran (THF) has glass transition temperature Tg in a range of from 35° C. through 55° C., and a moisture-content change rate of the toner extract before and after leaving the toner extract to stand for 3 days in an environment of 40° C. and 70% RH is 0.5% or less, and wherein a specific-surface-area change rate of the toner before and after leaving the toner to stand for 3 days in an environment of 40° C. and 70% RH is in a range of from 15% through 50%.

Abstract: A toner includes a plurality of toner particles each including a toner core and a shell layer covering a surface of the toner core. The toner core contains a crystalline polyester resin, a crosslinked non-crystalline polyester resin, and an uncrosslinked non-crystalline polyester resin. An endothermic energy amount ?HPES is at least 0.0 mJ/mg and no greater than 1.0 mJ/mg. The shell layer contains a resin that has a repeating unit including an oxazoline group. The toner has a glass transition point of at least 10° C. and no greater than 40° C. Loss tangents tan ?60 and tan ?100 of the toner are each at least 1.00 and no greater than 4.00. Loss tangents tan ?160 and tan ?200 of the toner are each at least 0.01 and no greater than 0.50.

Abstract: A chemically prepared core shell toner formulation for use in electrophotography having an inventive softening agent consisting of a core shell latex having an encapsulated interpenetrating polymer network microgel in the core of the toner is disclosed. Having this core shell latex with an encapsulated IPN microgel in the core of the toner results in a toner that can simultaneously fuse at a desirable low temperature and survive the temperature extremes associated with shipping and storage.

Abstract: Provided in one example herein is a liquid electrophotographic ink composition, comprising: a carrier fluid comprising a polymer; ink particles comprising pigment particles and a polymeric resin, the pigment particles comprising titanium dioxide and being distributed in the polymeric resin; and a charge director, wherein the ink particles have an average diameter of between about 10 ?m and 50 ?m; and the pigment particles are between about 10 wt % and about 50 wt % of the ink particles. Methods of making and using the ink composition are also provided.

Abstract: An object of the present invention is to provide a carrier in which decrease in specific gravity is achieved and a volatile organic compound (VOC) is reduced and to provide an electrophotographic developer using the carrier. There is provided a carrier including a core material coated with a resin, the core material including a magnetic component and a nonmagnetic component, wherein the sum total of volatile organic compounds is 1 ppb or more and 1.5 ppm or less. There is also provided an electrophotographic developer using the carrier.

Abstract: An electrophotographic photoreceptor includes: a conductive support; and a photosensitive layer which contains an electric charge generating material and an electric charge transport material, wherein a layer configuring a surface of the electrophotographic photoreceptor contains a resin binder, and conductive particles A and B dispersed in the resin binder, the conductive particles A have a single peak and volume resistance ?1, the conductive particles B have a single peak and volume resistance ?2, when a particle diameter of the conductive particles A is set to d1, and a particle diameter of the conductive particles B is set to d2, Expression (1) is satisfied, and when the volume resistance of the conductive particles A is set to ?1, and the volume resistance of the conductive particles B is set to ?2, Expression (2) is satisfied: 4×d2?d1?20×d2??(1) 10×?1<?2??(2).

Abstract: An electrostatic latent image developing toner includes toner particles each including a toner core and a shell layer disposed over a surface of the toner core. The shell layer includes a plurality of first domains (R1) and a second domain (R2) that is present at least among the first domains (R1). The first domains (R1) are each substantially formed from a first thermoplastic resin. The second domain (R2) is substantially formed from a second thermoplastic resin. The second thermoplastic resin is more hydrophobic than the first thermoplastic resin. The first thermoplastic resin includes at least one specific repeating unit having at least one group selected from the group consisting of a hydroxyl group, an amino group, and an amide group. A proportion of the at least one repeating unit among all repeating units included in the first thermoplastic resin is at least 0.5 mol % and no greater than 50 mol %.

Abstract: An electrostatic latent image developing toner includes toner particles each including a toner core and a shell layer. The shell layer includes first and second domains. The first domain includes a first copolymer of a first main monomer having a mole fraction of at least 20 mol % and one or more first additional monomers each having a mole fraction of less than 20 mol %. The second domain includes a second copolymer of a second main monomer having a mole fraction of at least 20 mol % and one or more second additional monomers each having a mole fraction of less than 20 mol %. A difference in polymer SP value between the first and second main monomers is at least 0.5 and no greater than 5.0. The first and second additional monomers each include one or more common monomers having a homopolymerization glass transition point of no greater than ?20° C.