Abstract: A toner includes toner particles. The toner particles each include a toner core containing a binder resin, a first shell layer covering a surface of the toner core, and a second shell layer partially covering a surface of the first shell layer. The first shell layers include first domains composed of a first thermoplastic resin and second domains composed of a second thermoplastic resin. The first thermoplastic resin has a glass transition point of at least 35° C. and no greater than 66° C. The second thermoplastic resin has a glass transition point of at least 71° C. and no greater than 105° C. The second shell layers contain a third thermoplastic resin that is more hydrophobic than the first thermoplastic resin and the second thermoplastic resin. The third thermoplastic resin has a higher glass transition point than the first thermoplastic resin.

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) that utilize connecting support structures in the process of building objects, as well as novel connecting support structures to be used within these AM processes. The connecting support structures include two fused connections to the object and an axial direction between the fused connections, a perimeter of fused material about the axial direction, and unfused powder or air completely surrounding the perimeter of fused material.

Abstract: A positively chargeable toner includes toner particles. Each of the toner particles includes a composite core and a shell layer covering a surface of the composite core. Each of the composite cores is a composite of a toner core containing a binder resin and a colorant layer disposed over a surface of the toner core. The colorant layers contain carbon black. The colorant layers have a thickness of at least 200 nm and no greater than 500 nm. The shell layers include a repeating unit having a non-ring-opened oxazoline group. An amount of the non-ring-opened oxazoline group contained in 1 g of the positively chargeable toner as measured by gas chromatography-mass spectrometry is at least 500 ?mol and no greater than 1,000 ?mol.

Abstract: A surface layer of an electrophotographic photosensitive member contains a cured product of a composition containing a hole transport compound having an acryloyloxy group or a methacryloyloxy group, and a compound having a specific structure.

Abstract: A toner contains toner particles, titanate fine particles having a Group II element, and hydrotalcite compound fine particles as an external additive and satisfying 10?Lt?80 and 100?Lh?Weight average particle diameter (D4) of toner particles×0.50, when the number average particle diameter (D1) of primary particles of the titanate fine particles is defined as Lt (nm) and the number average particle diameter (D1) of primary particles of the hydrotalcite compound fine particles is defined as Lh (nm).

Abstract: A developer including a colored resin particle and an external additive added to a surface of the colored resin particle and having a diameter smaller than or equal to 200 nm is provided. The external additive includes a nitrogen-containing resin particle. In elemental analysis of the nitrogen-containing resin particle, a peak appearing in a range of 0.38-0.42 keV is expressed as an N-peak, and a peak appearing in a range of 0.48-0.52 keV is expressed as an O-peak. Maximum count numbers in the N-peak and the O-peak of the external additive on a surface of the colored resin particle are respectively expressed as N1 and O1. Maximum count numbers in the N-peak and the O-peak of the surface of the colored resin particle where no external additive is observed are respectively expressed as N2 and O2. The count numbers N1, O1, N2 and O2 satisfy 1.7×(N2/O2)<(N1/O1).

Abstract: A toner includes a plurality of toner particles each including a toner mother particle and an external additive adhering to a surface of the toner mother particle. The external additive includes hydrotalcite particles. The hydrotalcite particles have a number average primary particle diameter of at least 80 nm and no greater than 1,000 nm. The hydrotalcite particles have a volume resistivity of no greater than 1.0×105 ?·cm. An amount of the hydrotalcite particles is at least 0.5 parts by mass and no greater than 3.0 parts by mass relative to 100 parts by mass of the toner mother particles.

Abstract: Provided is a toner that has a plurality of toner particles. Each toner particle can include a binder resin core and a shell disposed about the binder resin core. The binder resin core can include at least one binder resin. The shell can include a plurality of metal nanoparticles. The binder resin core can be prepared by forming an aggregate of the binder resin in which metallic nanoparticles are not present.

Abstract: Provided is a toner having: a toner particle including a binder resin and a wax A, wherein the binder resin includes at least 50% by mass of a styrene acrylic copolymer in the binder resin, the melting point of the wax A is from 60.0° C. to 100.0° C., the wax A is compatible at 100° C. in an amount of at least 15.0 parts by mass with 100 parts by mass of a styrene-butyl acrylate copolymer, in DSC of the toner, where a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 1.0° C./min is denoted by Tc(1), and a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 20.0° C./min is denoted by Tc(20), 0.0° C.?Tc(1)-Tc(20)?7.0° C. is satisfied.

Abstract: A white toner for electrostatic image development includes white toner particles containing a binder resin and a white pigment. When in a circularity distribution of the white pigment determined by sectional observation of the white toner particles, the cumulative 10% circularity from the smaller side is C10, and the cumulative 50% circularity is C50, the following formula (1) and formula (2) are satisfied. 0.900?C50?1.000??Formula (1): 1.00?C50/C10?1.

Abstract: An electrostatic charge image developing toner includes a styrene-acrylic resin and exhibits a z average molecular weight Mz of 80,000 to 400,000 and a molecular weight distribution curve satisfying Expression (1): 1.3?b/a?2.0, and an electrostatic charge image developing toner includes a styrene-acrylic resin, and exhibits a z average molecular weight Mz of 100,000 to 400,000 and a molecular weight distribution curve satisfying Expression (A): 0.75?(c+d)/(2×d)?0.95, wherein a, b, c and d are defined in the specification.

Abstract: The disclosure concerns an electrostatic latent image developer including: a toner having toner base particles and an external additive; and a carrier, wherein the external additive contains silicone oil-treated silica and titanium oxide, Net intensity of titanium (Ti) in the toner to be measured by X-ray fluorescence analysis is 0.5 to 5 kcps, the carrier has a resin coating layer coating core material particles, and the resin coating layer has a constituent unit formed from an alicyclic (meth)acrylic acid ester.

Abstract: Provided is a magnetic carrier comprising a magnetic carrier particle having a magnetic body-dispersed resin carrier core material and a resin coating layer; the core material includes magnetic particles A and B having number average primary particle diameter of ra and rb (?m), respectively, satisfying ra?rb; the particles A each include an oxide of at least one nonferrous metal of Mn, Al, Mg, Ti, and Ni; and an iron oxide; M1 represents total content of the nonferrous metal and F1 represents content of an iron of the magnetic carrier particle measured by XRF diffraction, M1/F1 is 0.010 to 0.100; M2 represents total content of the nonferrous metal and F2 represents content of an iron is F2 of the magnetic carrier particle measured by XPS, M2/F2 is 1.0 to 10.0.

Abstract: An electrophotographic photoreceptor includes a conductive support, a charge generation layer disposed on the conductive support, and a charge transport layer disposed on the charge generation layer. The charge generation layer includes a charge generating material and a vinyl copolymer. The vinyl copolymer includes a structural unit including a chlorine atom, a structural unit including an acyloxy group, and a structural unit including two or more carboxyl groups. The proportion of the structural unit including an acyloxy group to all of the structural units is 13.4 mol % or more and 20.0 mol % or less. The charge transport layer includes a charge transporting material and a binder resin.

Abstract: Herein is disclosed a cyan electrostatic ink composition, the cyan electrostatic ink composition comprising: a cyan pigment, a basic dispersant, a phthalocyanine having acid groups, a resin and a charge director.

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) that utilize support structure in the process of building objects that may be removed by rotating the support structure to a second orientation before removal, as well as novel support structures to be used within these AM processes. The support structures are fabricated in a first orientation and then rotated to the second orientation. The support structures are removed by passing through an outlet of the object.

Abstract: A toner includes an external additive particle that is a complex oxide containing a titanium dioxide (TiO2) and a silicon dioxide (SiO2). A detection amount of titanium (Ti) detected through an elementary analysis based on energy-dispersive X-ray spectrometry is equal to or higher than about 0.590 percent by weight and equal to or lower than about 0.967 percent by weight.

Abstract: Provided is a color image forming process using colorant-containing toners of multiple colors containing colorants respectively having different resistances, wherein each of the colorant-containing toners contains an amorphous resin, a crystalline polyester resin, and a mold release agent, at least the crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance contains a hybrid crystalline polyester resin formed by bonding a crystalline polyester polymerized segment and an amorphous polymerized segment, and the content of the amorphous polymerized segment in the hybrid crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance is greater than the content of the amorphous polymerized segment in the crystalline polyester resin contained in the colorant-containing toner containing a colorant having the lowes

Abstract: An electrophotographic photoreceptor includes a conductive support and a single-layer photosensitive layer. The conductive support has an outer peripheral surface with a maximum surface roughness height (Rmax) of about 4.0 ?m or less, and the outer peripheral surface has a recess with a depth-to-aperture size ratio (depth/aperture size) of about 0.03 or more and about 0.12 or less. The single-layer photosensitive layer is disposed on the conductive support and has a thickness of about 20 ?m or more and a modulus of elasticity of about 4.5 GPa or more.

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer includes a charge generating layer and a charge transport layer. The charge generating layer contains a charge generating material. The charge transport layer contains a hole transport material and a binder resin. The charge transport layer further contains an electron acceptor compound. The hole transport material includes a compound represented by general formula (1). In general formula (1), R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each represent, independently of one another, a hydrogen atom or a methyl group.