Patent classifications
G03G9/1138
Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
An electrostatic image developing toner includes toner particles, layered compound particles, and inorganic particles. The proportion of irregular-shaped inorganic particles having a circularity of 0.5 or more and 0.9 or less and a size of 0.015 μm or more and 0.350 μm or less to the entire inorganic particles is 2% by number or more and 70% by number or less.
ELECTROSTATIC CHARGE IMAGE DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
An electrostatic charge image developer contains toner particles, layered-compound particles that are particles of a nitrogen-containing layered compound, and a resin-coated carrier that has magnetic particles and a resin layer covering the magnetic particles. The maximum height Ry of the roughness profile as defined in JIS B0601: 1994 of the surface of the resin-coated carrier is 0.01 μm or more and 0.20 μm or less.
Electrostatic charge image development toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
An electrostatic charge image development toner contains toner particles and layered-structure compound particles. The layered-structure compound particles have a crystallite diameter of 150 Å or more and 250 Å or less as calculated from a maximum peak width in a Cu Kα X-ray diffraction chart and have a number-average particle diameter Dn of 0.3 μm or more and 2.0 μm or less. The ratio Dn/Dv of a number-average particle diameter Dn of the layered-structure compound particles to a volume-average particle diameter Dv of the toner particles is 0.03 or more and 0.7 or less.
Electrostatic-image developing toner, electrostatic-image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
An electrostatic-image developing toner includes toner particles, layered compound particles, and inorganic particles. The inorganic particles have an average circularity of 0.910 or more and 0.995 or less. A ratio Da/Db of a number-average particle size Da of the layered compound particles to a number-average particle size Db of the inorganic particles is 1.2 or more and 43 or less.
Electrostatic charge image development toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
An electrostatic charge image development toner that is negatively chargeable contains toner particles and layered-structure compound particles. The layered-structure compound particles have a volume-average particle diameter Da of 0.4 μm or more and less than 3.0 μm. The ratio Da/Db of the volume-average particle diameter Da of the layered-structure compound particles to the volume-average particle diameter Db of the toner particles is 0.044 or more and 0.625 or less.
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
A toner for developing an electrostatic charge image contains toner particles, layered-compound particles, and inorganic particles. The percentage Fa of layered-compound particles free from the toner particles is 5% by volume or more and 20% by volume or less.
Carrier, electrophotographic developer and production method of carrier
There is provided a carrier including a magnetic core material having a surface coated with a surfactant-containing resin mixture of an elemental fluorine-containing resin and a polyimide resin. The carrier has an elution amount of an eluted material into water in an elution test ranging from 180 ppm to 3,500 ppm.
ELECTROSTATIC CHARGE IMAGE DEVELOPMENT TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
An electrostatic charge image development toner contains toner particles and layered-structure compound particles. The layered-structure compound particles have a crystallite diameter of 150 or more and 250 or less as calculated from a maximum peak width in a Cu K X-ray diffraction chart and have a number-average particle diameter Dn of 0.3 m or more and 2.0 m or less. The ratio Dn/Dv of a number-average particle diameter Dn of the layered-structure compound particles to a volume-average particle diameter Dv of the toner particles is 0.03 or more and 0.7 or less.
ELECTROSTATIC-IMAGE DEVELOPING TONER, ELECTROSTATIC-IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
An electrostatic-image developing toner includes toner particles, layered compound particles, and a free oil. The mass ratio Ma/Mb of the content Ma of the layered compound particles to the content Mb of the free oil is 0.05 or more and 100 or less.
ELECTROSTATIC CHARGE IMAGE DEVELOPMENT TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
An electrostatic charge image development toner that is negatively chargeable contains toner particles and layered-structure compound particles. The layered-structure compound particles have a volume-average particle diameter Da of 0.4 m or more and less than 3.0 m. The ratio Da/Db of the volume-average particle diameter Da of the layered-structure compound particles to the volume-average particle diameter Db of the toner particles is 0.044 or more and 0.625 or less.