Ricoh Company, Ltd.

Shizuoka University

J-Oil Mills, Inc.

Idzumi Okajima

Takeshi Sako

Chiaki Tanaka

Satoyuki Sekiguchi

Takayuki Shimizu

Ryota Inoue

Shinichiro Yagi

Yoshitaka Yamauchi

Taichi Nemoto

Shogo Suzuki

Kazumi Ohtaki

Nobuyuki Mase

Shunsuke Mori

Keishi Mizuno

Jyun Ishiduka

Takahiro Yamashita

Hajime Hori

Masahito Furuki

Ryousuke Shimobayashi

A method for regenerating a carrier core material for electrophotography, including: treating a carrier for electrophotography including a carrier core material for electrophotography and a coating layer on a surface of the carrier core material for electrophotography with an aqueous solution including an oxidant in a subcritical state or a supercritical state having a temperature of 280&#xb0; C. or greater and a density of 0.20 g/cmor greater, wherein an amount of the oxidant in a total amount of the aqueous solution used in the treating is greater than 0.05 parts by mass with respect to 1 part by mass of the carrier for electrophotography to be treated in the treating.

Method for regenerating carrier core material for electrophotography, method for manufacturing carrier for electrophotography, and carrier for electrophotography

A method for producing polymer particles, including (A) polymerizing and granulating a ring-opening polymerizable monomer in a compressive fluid with a catalyst in the presence of a surfactant, or (B) polymerizing and granulating an addition polymerizable monomer in a compressive fluid in the presence of a silicone surfactant.

Polymer particle and method for producing the same

A method for producing colored polymer particles, including adding a colorant-containing composition containing a radically polymerizable monomer and a colorant in a supercritical fluid or a subcritical fluid and polymerizing the radically polymerizable monomer, so as to produce colored polymer particles which are insoluble in the supercritical fluid or subcritical fluid, wherein the supercritical fluid or subcritical fluid is a supercritical fluid or subcritical fluid in which at least the radically polymerizable monomer is soluble, but polymer particles resulted from polymerization of the radically polymerizable monomer are insoluble, and wherein the colorant is at least one selected from the group consisting of a pigment, a dye and a polymer dye.

Colored polymer particles, method for producing the same, and toner and developer using the same

Disclosed is a soapstock treatment apparatus which can treat a soapstock produced during a plant oil production process within a short period and with a high degree of efficiency. As shown in FIG., the soapstock treatment apparatus includes a reactorconfigured to oxidatively decompose a soapstock, an electric heating coilconfigured to heat water in the reactorat 650&#xb0; C. which is not less than the critical temperature of water, a high-pressure pumpconfigured to pressurize the water in the reactorat 17 Mpa which is less than the critical pressure of water, and a compressorconfigured to pressurize the water in the reactorat 17 Mpa which is less than the critical pressure of water. Also, an exhaust pipefor discharging a reaction gas generated by the oxidative decomposition treatment and a waste pipefor discharging a solid (inorganic) residue generated by the oxidative decomposition treatment are connected to the reactor. Furthermore, a gas-liquid separatorfor separating the reaction gas into a gas substance and a liquid substance are connected.

Soapstock treatment apparatus, soapstock treatment method, and method for manufacturing fertilizer derived from soapstock

Growing community of inventors

Shizuoka, Japan

Idzumi Okajima