Abstract: An object of the present invention is to provide an azo compound capable of improving the dispersibility of an azo pigment in a non-water-soluble solvent. The object of the present invention is achieved with an azo compound wherein a coloring matter moiety having a diketone azo structure and a polymer are bonded to each other.

Abstract: A composition that contains a compound represented by the formula (1) is dissolved in an organic compound, and the composition is purified by using a basic adsorbent that contains at least 15% by mass magnesium and has a volume average particle diameter of 10 ?m to 500 ?m, both inclusive. An undercoat-layer-forming coating liquid is prepared by removing the basic adsorbent and dispersing metal oxide particles in the obtained solution containing the purified form of the composition. An undercoat layer is formed by forming a coat of the undercoat-layer-forming coating liquid and drying the coat.

Abstract: Disclosed is a positively-charged single-layer electrophotographic photoreceptor in which a photosensitive layer containing at least a binding resin and a charge transporting material is provided on a photosensitive layer support base with a wall thickness of 0.7 mm or less, wherein when the charge transporting material is solely constituted by a hole transporting material, a content of the hole transporting material is 110 parts by mass or less with respect to 100 parts by mass of the binding resin, and when the charge transporting material is constituted by a hole transporting material and an electron transporting material, a content of the hole transporting material is 130 parts by mass or less and a content of the electron transporting material is 5 parts by mass or more with respect to 100 parts by mass of the binding resin.

Abstract: Provided is a toner has toner particle containing a crystalline polyester resin A, an amorphous resin B and a colorant, wherein (1) the crystalline polyester resin A is a resin that has a crystal nucleating agent segment (D) on the end of a polyester molecular chain (C), (2) the amorphous resin (B) is a hybrid resin in which a polyester unit (E) and a vinyl polymer unit (F) are chemically bonded, and (3) the SP value of the polyester molecular chain (C) (Sc), the SP value of the crystal nucleating agent segment (D) (Sd), the SP value of the polyester unit (E) (Se) and the SP value of the vinyl polymer unit (F) (Sf) satisfy specific relationships.

Abstract: A toner set, including: a transparent toner including a binder resin a, a releasing agent a and no colorant; and one or more color toners, each including a binder resin b, a colorant b and a releasing agent b, wherein the binder resin a includes a non-crystalline resin ? and a crystalline resin ?, the binder resin b includes a non-crystalline resin ? and a crystalline resin ?, the releasing agent a has an average particle diameter as a long diameter of 0.2 ?m to 2.0 ?m, and there is a relationship of 1<A/B<1.5, where A is an area of the releasing agent a in a transparent toner cross-section from a surface thereof to a ?-depth of a volume-average particle diameter, and B is an area of the releasing agent b in a color-toner cross-section from a surface thereof to a ?-depth of a volume-average particle diameter.

Abstract: A liquid developer includes a carrier liquid having insulation property, colored particles, and an organic high molecular compound. The organic high molecular compound is dissolved in the carrier liquid. The organic high molecular compound includes elastomer A that is a styrene-butadiene-based elastomer not having an acid group or a basic group and elastomer B that is a styrene-based elastomer having an acid group or a basic group. A content of the elastomer A in the liquid developer is 6% by mass or more and 8% by mass or less, and a content of the elastomer B in the liquid developer is 0.4% by mass or more and 0.8% by mass or less. The colored particles include aniline black.

Abstract: Disclosed is an electrostatic ink composition, comprising a single charge director and a charge control agent that counters the build up of negative optical density memory on the intermediate transfer member of a printing apparatus using the electrostatic ink.

Abstract: A carrier for use in a two-component developer for developing an electrostatic latent image is provided. The carrier includes a particulate magnetic core; and a cover layer located on a surface of the particulate magnetic core and including a resin and a particulate electroconductive material. The carrier has a BET specific surface area of from 0.8 to 1.6 m2/g.

Abstract: A process for attaching additives onto toner particles using plasma is described.

Abstract: According to one embodiment, a method of manufacturing an erasable toner includes washing toner particles including therein a coloring material that is erasable by heating and a binder resin to obtain a toner cake having the amount of water of 20% by weight to 60% by weight, and drying the toner cake at 40° C. or more and at a temperature which is lower than the complete color erasing temperature of the toner particles by 30° C. or more.

Abstract: A process includes forming an emulsion comprising a monomer and a colorant, the colorant further including an anionic functional group and a lipophilic counter ion, and polymerizing the monomer to form a latex, the latex includes polymer nanoparticles having the colorant dispersed therein.

Abstract: The disclosure provides a flexible electrophotographic imaging member comprising a single novel polymer binder in the formulation of the imaging layers. In particular, the present embodiments provide multi-layered electrophotographic imaging members prepared by using the same polymer binder in the two contiguous imaging formation layers to improve mechanical and photoelectrical performance. The embodiments also include a process for making and using the imaging member.

Abstract: A toner including: a binder resin containing a non-crystalline resin and a crystalline resin; a colorant; and, a releasing agent, wherein the releasing agent has a melting point of 55° C. to 80° C., and wherein the toner satisfies the following Expressions 1 and 2: (Expression 1): 20,000 Pa·s?G1?50,000 Pa·s; and (Expression 2): (G4/G2)/(G3/G1) 1.00, where G1 is a storage modulus, G2 is a loss modulus, G3 is a storage modulus and G4 is a loss modulus, and the storage modulus G1 and the loss modulus G2 are measured at 80° C. when the toner is heated from 70° C. to 150° C. and the storage modulus G3 and the loss modulus G4 are measured at 80° C. when the toner heated to 150° C. is cooled to 70° C.

Abstract: A toner includes a polymeric resin, optionally a colorant, and a small molecule crystalline aromatic ether having a molecular weight less than 1,000 g/mol. The polymeric resin may be an amorphous resin and a mixture of the amorphous resin and the crystalline aromatic ether may be characterized by a reduction in glass transition temperature from that of the resin and by the lack of a melting point for the crystalline aromatic ether as determined by differential scanning calorimetry, the enthalpy of fusion for the crystalline aromatic ether in the mixture being measured to be less than 10% of the enthalpy of fusion of the crystalline aromatic ether in pure form. Furthermore, the toner may be configured to have a crease fix minimum fusing temperature (MFT) less than or equal to the crease fix MFT of a benchmark ultra-low-melt emulsion aggregation toner. Suitable crystalline aromatic ethers may include benzyl 2-naphthyl ether.

Abstract: An electrostatic image developing toner including: first toner particles which contain a first binder resin and a brightness pigment; and second toner particles which contain a second binder resin and do not contain a brightness pigment, wherein the proportion of the second toner particles is in a range from 5% by number to 80% by number with respect to a total number of all toner particles.

Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. An aggregated particle slurry is further heated in a first heat exchanger, and the heated slurry then flows through a residence time reactor. The slurry, now containing coalesced particles, then flows through a second heat exchanger and is quenched. The recovered coalesced particle slurry is then suitable for washing and drying. No moving parts are needed in this system.

Abstract: Toner contains a binder resin containing a crystalline resin having a urethane and/or urea bonding; and a colorant, wherein in a diffraction spectrum of the toner as measured by an X-ray diffraction instrument, a ratio {C/(C+A)} of an integral intensity C of the spectrum derived from the crystalline structure to an integral intensity A of the spectrum derived from the non-crystalline structure is 0.12 or greater, wherein the toner satisfies the following relation 1: T1?T2?30° C. (Relation 1), where T1 represents the maximum endothermic peak in the first temperature rising from 0° C. to 100° C. at the temperature rising rate of 10° C./min and T2 represents the maximum exothermic peak in the first temperature falling from 100° C. to 0° C. at the temperature falling rate of 10° C./min as T1 and T2 are measured by diffraction scanning calorimetry (DSC).

Abstract: Toner contains a mother toner particle containing a binder resin and a coloring agent and an external additive to cover the mother toner particle, wherein the external additive contains a resin particle, wherein the resin particle has an outer shell layer formed of silica or modified silica, wherein the resin particle has a non-spherical form with a shape factor (SF) of 1.20 or greater as calculated by the following relationship 1, Shape factor(SF)=[(Absolute maximum length of particle)2/Projected area of particle)]×(?/4)??Relation 1.

Abstract: There is provided a liquid developer containing a toner that has a ratio G?(65)/G?(90) of a storage modulus G?(65) at 65° C. to a storage modulus G?(90) at 90° C. of from 1×10 to 1×103, and a carrier liquid that has a difference ?SP(tc) of SP value between the carrier liquid and the toner of from 1.5 to 7.0, and an image forming apparatus containing an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device, a transfer device and a fixing device.

Abstract: Composite materials such as composite particles have a solid non-elastomeric continuous phase made of an organic polymer having a glass transition temperature of at least 25° C. Dispersed within this solid non-elastomeric continuous phase are many multi-compartment porous chemically crosslinked elastomeric particles that have a mode particle size of at least 1 ?m and up to and including 10 ?m. The composite particles can be used as toner particles in electrophotographic imaging methods to provide fused toner images and especially stacked fused toner images.