Konica Corporation

Tomoe Kikuchi

Kenji Hayashi

Mikio Koyama

Hiroshi Yamazaki

Naohiro Hirose

Yoshiki Nishimori

Shinichi Suzuki

Mikio Kohyama

Yoshiaki Koizumi

Tsutomu Iwamoto

Disclosed is a toner for developing an electrostatic latent image, the toner containing polymer particles having a carboxyl group on the surface thereof in the range of

Toner, developer and image forming method employing the toner

A non-spherical toner particle for developing an electrophotographic image and its producing method are disclosed. The toner particle is one which is produced by coagulating and fusing a plurality of pigment-including polymer particles which are formed by emulsion polymerization of at least one hydrophobic polymerizable monomer in an aqueous phase in the presence of a surfactant, pigment particles, which has a calcium content of zero to 0.1% by weight, dispersed in said aqueous phase and a water-soluble radical polymerization initiator.

Toner particle for electrophotography and production method thereof

Disclosed is a toner for developing an electrostatic latent image, said toner having a BET specific surface area of not less than 5m.sup.2 /g and a particle size distribution (2SD) of not more than 5 .mu.m.

Toner for developing an electrostatic latent image

Disclosed is a toner for developing an electrostatic latent image, said toner having BET specific surface area of not less than 5m.sup.2 /g.

Toner for developing an electrostatic latent image, Developer and a

Disclosed is a method for producing non-spherical particle consisting of a number of mutually coagulated polymer particles comprising the steps of:

Method for producing non-spherical particle

A method of manufacturing pigment containing polymer particles comprises the steps of dissolving a surface active agent in a water at concentration higher than the CMC, dispersing a pigment, diluting the suspension at the concentration not higher than the CMC, and adding a monomer and a polymerization initiator for forming the pigment-containing polymer particles.

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Hino, Japan

Tomoe Kikuchi