摘要:
Toner housing container includes: container body housing a toner; conveying portion conveying the toner from longer direction one end of container body to its other end at which container opening portion is provided; pipe receiving port receiving a conveying pipe fixed to toner conveying device; and uplifting portion moving the toner toward toner receiving port of conveying pipe. Toner has molecular weight distribution having a peak in a range of 103 to 104, and has C/R of from 0.03 to 0.55 between peak height C attributed to crystalline polyester resin and R attributed to non-crystalline resin when measured by FT-IR after stored at 45° C. for 12 hours. Container body includes protruding portion protruding from container body interior side toward the one end. Uplifting portion includes uplifting wall surface extending from container body internal wall surface toward protruding portion. Protruding portion is present between uplifting wall surface and toner receiving port.
摘要:
The carrier is used for a two-component developer for developing an electrostatic latent image, and includes a particulate magnetic core material; and a cover layer located on a surface of the particulate magnetic core material and including a crosslinked material. The crosslinked material is formed by hydrolyzing a copolymer including at least a unit (A) having a specific acrylic siloxane structure including a tris(trialkylsiloxy)silanyl group and a unit (B) having a specific acrylic silicone structure to form a material having a silanol group, and subjecting the material having a silanol group to a condensation reaction using an organic zirconium-containing catalyst.
摘要:
A white toner has a first temperature range not less than 25° C. in which 60° glossiness is 10 or less between a fixable minimum temperature and a fixable maximum temperature thereof. The white toner has a second temperature range not less than 25° C. in which 60° glossiness is from 30 to 60 therebetween.
摘要:
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.
摘要:
Carrier for image forming includes a core material particle including a magnetic material and a coating layer disposed on the surface of the core material particle, the coating layer including a resin, carbon black, an inorganic particulate A, and an inorganic particulate B. The carbon black has a concentration gradient along a thickness direction of the coating layer with a concentration from high to low toward a surface of the coating layer while the inorganic particulate A has a concentration gradient along a thickness direction of the coating layer with a concentration from low to high toward the surface of the coating layer. The volume ratio of the carbon black is 0-30 percent at a depth range of 0.0-0.1 μm from the surface of the coating layer. The inorganic particulate A is electroconductive with a powder specific resistance of 200 Ω·cm or less.
摘要:
A toner including: a binder resin containing at least a polyester resin (A) and a polyester resin (B) as main components; a colorant; a release agent; and a graft polymer containing a polyolefin resin and a vinyl resin, wherein the polyester resin (A) is a condensation product resulting from condensation polymerization between an alcohol component containing a dihydric alcohol compound, and a carboxylic acid component containing a rosin compound, and the rosin compound occupies 5% by mass or more of the total amount of the alcohol component and the carboxylic acid component, and wherein the polyester resin (B) is a condensation product resulting from condensation polymerization between an alcohol component containing a dihydric alcohol compound which includes at least an alkylene oxide adduct of a bisphenol compound represented by General Formula (1) below, and a carboxylic acid component:
摘要:
A toner, where a diffraction peak of the toner as measured by X-ray diffraction spectroscopy is present at least in a region where 2θ is from 20° through 25°, and a difference between Tg1 and Tg2 is 10° C. or less, where Tg1 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of a differential scanning calorimeter (DSC) under the heating and cooling conditions 1 defined in the specification, and Tg2 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of the differential scanning calorimeter (DSC) under the heating and cooling conditions 2 defined in the specification.
摘要:
A toner, wherein a binder resin contains a polyester resin (A) produced by polycondensing an alcohol component with a carboxylic acid component which contains a rosin compound in an amount of 5% by mass or more of the total amount by mass of the alcohol component and the carboxylic acid component, and a polyester resin (B) produced by polycondensing an alcohol component containing an alkylene oxide adduct of bisphenol A represented by General Formula (1) given below with a carboxylic acid component, and wherein the toner contains abietic acid in an amount of 0.01% by mass to 1% by mass: where R1 and R2 each represent C2-C4 alkylene; R3 and R4 are each any one of a hydrogen atom, C1-C6 straight-chain alkyl, and C1-C6 branched-chain alkyl; and x and y each represent a positive integer and the sum of x and y is 1 to 16.
摘要:
There are provided a toner, a method of manufacturing the toner, a two-component developer, a developing device, and an image forming apparatus, which are excellent in a charge rising property, environmental stability, and life stability during printing and which cause less fogging. The toner contains a core particle containing binder resin and colorant, and a coating layer which contains resin and a charge control agent and is formed on a surface of the core particle. At least a part of the resin contained in the coating layer is melt-bonded to the core particle, and the charge control agent is dispersed and immobilized in the coating layer. The dispersed charge control agent has a dispersion diameter of less than 1 μm.