Fuji Xerox Co., Ltd.

Kazuya Mori

Yuji Isshiki

Takashi Hara

Satoshi Yoshida

Takao Ishiyama

Michio Take

Yuji Masuda

Eiji Kawakami

Junichi Tomonaga

Shinichiro Kawashima

Takahiro Mizuguchi

Takahiro Yamashita

Takahisa Tatekawa

Hitoshi Kojima

Hitomi Akiyama

Yuta Saeki

Akitsugu Seto

Atsushi Yamahashi

An electrostatic-image developing toner contains toner particles containing a polyester resin having an acid value of from 10 mg KOH/g to less than 15 mg KOH/g. The toner particles have a surface with an acid value in a range from 0.3% to 1.7% of the acid value of the polyester resin. The toner particles have a melt viscosity of from 1,800 Pa&#xb7;s to 3,800 Pa&#xb7;s at 100&#xb0; C.

Electrostatic-image developing toner, electrostatic image developer, and toner cartridge

A wastewater treatment process for treating wastewater comprising a water-based dispersion containing a surfactant, a colorant and silica, as well as other solid matter, wherein the wastewater is treated using a polysilicato-iron coagulant.

Wastewater treatment process

An electrostatic latent image developing magenta toner includes at least quinacridone pigment, naphthol pigment, and a release agent. Colorant of the toner satisfies conditions (a) and (b): (a) an average primary particle size D50 of a quinacridone pigment represented by formula (1) and an average primary particle size D50 of a naphthol pigment represented by formula (2) are such that the average primary particle size D50 of the quinacridone pigment is smaller than the average primary particle size D50 of the naphthol pigment; and (b) the average primary particle size D50 of the quinacridone pigment is greater than 20 nm, and the average primary particle size D50 of the naphthol pigment is smaller than 200 nm. Formula (1): Here, each of R, R, R, and Ris selected from the group consisting of H, CH, and Cl, Rand Rare different from each other, and Rand Rare different from each other. Formula (2): 

Electrostatic latent image developing magenta toner, electrostatic latent image developer, toner manufacturing method, and image forming method

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Minami-ashigara, Japan

Kazuya Mori