Ricoh Company, Ltd.

Masato Taikoji

Shinichiro Yagi

Mariko Takii

Haruki Murata

Yoshihiro Murasawa

Hiroyuki Kishida

Toyoaki Tano

Yuuki Mizutani

Kenichi Mashiko

Koichi Sakata

Masanori Rimoto

Kei Niwayama

Takahiro Nakamura

A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.

Carrier for developing electrostatic latent image, two-component developer, developer for replenishment, image forming device, process cartridge, and image forming method

A carrier includes a resin layer including Al and Sn and covering the surface of the carrier. A detectable amount of Al is from 1.0% to 12.1% by atom and a ratio (Al/Sn) of the detectable amount of Al to that of Sn is from 2.0 to 50.0 when the carrier is subjected to an X-ray photoelectron spectroscopic (XPS) analysis.

Carrier and developer

A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100&#x2265;(a)/(b)&#x2265;5 is satisfied. The particulate material A is barium sulfate.

Carrier for developing electrostatic latent images, two-component developer, image forming apparatus, toner storing unit, and supplemental developer

A method of preparing a carrier for electrophotography, including a core material and a coating material layer formed on the surface of the core material, including:

Method of preparing carrier for electrophotography

A method of manufacturing a carrier including covering a core material with a covering material to form a covering layer on the core material and baking the covering material by heating the core material by high frequency induction applied thereto by a high frequency induction heating device.

Method of manufacturing a carrier, a carrier, a development agent, and a process cartridge

A method of preparing carrier for electrophotography, which includes a core material and a coating material layer formed on the surface of the core material, including coating a coating material of the coating material layer on the core material; and burning the coating material by an induction heater, wherein the induction heater applies an alternative current to parallely-located plural coil circuits including a conductive wire including the shape of a coil to generate a magnetic line changing its direction and intensity for inductively heating the core material to heat the coating material.

Method of preparing carrier for electrophotography, carrier for electrophotography, developer for electrophotography, process cartridge and image forming apparatus

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Shizuoka, Japan

Masato Taikoji