Ricoh Company, Ltd.

Hodogaya Chemical Co., Ltd.

Shizuoka University

Toyohashi University of Technology

Chiaki Tanaka

Tomoyuki Shimada

Masaomi Sasaki

Kazukiyo Nagai

Naohiro Watanabe

Shinichi Kawamura

Katsuhiro Morooka

Akira Katayama

Nozomu Tamoto

Ryota Inoue

Michihiko Namba

Masahide Yamada

Masayuki Ishii

Mitsutoshi Anzai

Taichi Nemoto

Masahiro Ohki

Chihaya Adachi

Tamotsu Aruga

Shigeru Emoto

Hiroshi Adachi

Susumu Suzuka

Akinori Saitoh

Takeshi Takada

Sonoh Matsuoka

Hiroshi Yamashita

Tetsuro Suzuki

Tsunemi Sugiyama

Akihiro Imai

Masami Tomita

Kazuhito Watanabe

Katsukiyo Nagai

Yoshitaka Yamauchi

Keiko Osaka

Takuya Saito

Masayuki Shoshi

Kaoru Tadokoro

Kei Naitoh

Ryohta Inoue

Hiroshi Tamura

Satoshi Izumi

Kouji Kishida

Hiroshi Yamada

Hiroshi Ikuno

Yoshiki Yanagawa

Satoyuki Sekiguchi

Yoshihiro Moriya

Shingo Sakashita

Tetsuya Toshine

Shinji Ohtani

Hongguo Li

Michio Kimura

Kohkoku Ri

Takeshi Sako

Yasuo Kamada

Hiromi Tada

Yoko Arai

Idzumi Okajima

Akira Suzuki

Takuya Seshita

Hidetoshi Yano

Yohichiroh Watanabe

Shinichi Kuramoto

Hiromitsu Takagaki

Kiyoshi Tanikawa

Shogo Suzuki

Masahiro Kawamoto

Aino Noguchi

Jyun Ishiduka

Tatsunori Kamiyama

Tomoyuki Shimida

Takahiro Yamashita

Shinichiro Kawasaki

Yuuichi Satoh

Nobuyuki Mase

Eri Yoshida

Shunsuke Mori

Keishi Mizuno

Nahiro Watanabe

A method for producing particles, the method including: depolymerizing a resin to obtain a depolymerized product; contacting the depolymerized product obtained in the depolymerizing with a first compressive fluid to obtain a melted product; and jetting the melted product obtained in the contacting to granulate the particles.

Method and apparatus for producing particles, particles, composition, particles dispersion liquid, and method for producing the particles dispersion liquid

A method for producing particles, which contains: bringing a compressive fluid and a pressure plastic material into contact with each other to melt the pressure plastic material; and jetting a melt obtained by melting the pressure plastic material to form particles, wherein the jetting the melt is performed by a two-fluid nozzle or three-fluid nozzle.

Particles and method for producing particles

To provide a method for producing particles, which contains: bringing a compressive fluid and a pressure plastic material into contact with each other using a multistage split flow micromixer, to thereby produce a melt of the pressure plastic material, in which the compressive fluid is dissolved; and jetting the melt of the pressure plastic material, to form particles, wherein the pressure plastic material is a resin having a carbonyl structure &#x2014;C(&#x2550;O)&#x2014;, and wherein a viscosity of the melt is 500 mPa&#xb7;s or lower, as measured under temperature and pressure conditions at the time of the jetting the melt of the pressure plastic material.

Method for producing particles and apparatus for producing particles

To provide a method for producing a polymer, which contains: bringing a ring-opening polymerizable monomer containing an amide bond, and a compressive fluid into contact with each other to melt or dissolve the ring-opening polymerizable monomer containing an amide bond, followed by allowing the ring-opening polymerizable monomer containing an amide bond to react through ring-opening polymerization in the presence of a basic organic metal catalyst and a cocatalyst, to thereby obtain a polymer product.

Method for producing polymer

A toner prepared by a method comprising granulating while polymerizing a ring-opening polymerizable monomer with a catalyst under the presence of a surfactant and a colorant in a compressible fluid.

Toner

A particle manufacturing method of the present invention includes: ring-opening-polymerizing a ring-opening-polymerizable monomer after bringing the ring-opening-polymerizable monomer into contact with a first compressible fluid; and granulating a polymer obtained in the ring-opening-polymerizing by jetting the polymer and the first compressible fluid.

Particle manufacturing method, particles, and particle manufacturing apparatus

A polymer production apparatus, including: supplying unit containing first supplying unit to supply raw materials containing monomer, and second supplying unit to supply compressive fluid; contacting unit to bring the monomer and the compressive fluid into contact together; and outlet configured to discharge reaction product of the monomer, wherein reaction unit is provided between the contacting unit and the outlet, where the reaction unit is to pass the monomer from the contacting unit side to the outlet side, while allowing the monomer to carry out a polymerization reaction in the presence of the compressive fluid, and wherein the reaction unit contains circulation unit containing first pipe and second pipe, where a fluid is passed through the first pipe from the contacting unit side to the outlet side, and the second pipe is to return the fluid from return port provided upstream extrusion unit to inlet provided upstream the return port.

Polymer production apparatus and polymer production method

A method for producing a polymer, including: (i) continuously supplying and bringing at least a first monomer, which is ring-opening polymerizable, and a compressive fluid into contact with each other, to thereby allow the first monomer to carry out ring-opening polymerization to continuously generate an intermediate; and (ii) bringing the intermediate and a second monomer, which is identical to or different from the first monomer in kind, into contact with each other, to thereby allow the intermediate and the second monomer to carry out polymerization.

Method for producing polymer and device for producing polymer

A method for producing a polymer, by continuously supplying and bringing at least a ring-opening polymerizable monomer and a compressive fluid into contact with each other, to thereby allow the ring-opening polymerizable monomer to carry out ring-opening polymerization to continuously generate a polymer.

Method for producing polymer, device for producing polymer, device for producing complex, and polymer product

A method for producing particles, including: bringing a compressive fluid into contact with a pressure plastic material, so as to plasticize the pressure plastic material; applying a shear force to the compressive fluid and the plasticized pressure plastic material, between which an interface exists, in the presence of a surfactant to granulate the pressure plastic material in the compressive fluid, so as to produce particles.

Particles and method for producing the same, toner and method for producing the same, developer, process cartridge, image forming method and image forming apparatus

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 particles, including: bringing a compressive fluid into contact with a pressure plastic material, so as to produce a melt of the pressure plastic material; and discharging the melt of the pressure plastic material by differential pressure to a space, so as to form particles, wherein the discharging includes at least one of (A) discharging the melt of the pressure plastic material while a compressive fluid is supplied to the melt of the pressure plastic material, and (B) discharging the melt of the pressure plastic material through one or more through-holes, to which vibration is applied, so as to change the shape of the melt of the pressure plastic material from a columnar shape, through the columnar shape with constrictions, into a particle shape.

Method for producing particles, method for producing toner, and apparatus for producing particles

A toner for developing an electrostatic image is provided. The toner includes at least a binder resin; a colorant; and a particulate release agent. The particulate release agent is prepared by heating the release agent to a temperature not lower than a melting point of the release agent to melt the release agent, dissolving the melted release agent in a supercritical fluid or a sub-critical fluid, and feeding the solution into a liquid so that the solution is depressurized and the particulate release agent is formed in the liquid.

Method for preparing particulate release agent, toner using the particulate release agent, and method for preparing the toner

A particle producing method is provided including bringing a material into contact with a compressible fluid to prepare a melt of the material, and discharging the melt from a vibrated through hole to form particles of the melt. A particle producing apparatus is also provided including a discharger to discharge the melt. The discharger includes a storage to store the melt, at least one through hole disposed on the storage, and a vibrator to vibrate the through hole. The particle producing apparatus further includes a particle forming member defining a space within which the discharged melt is formed into particles and a pressure controller controlling a pressure difference between the space and an inside of the storage so that the discharged melt is formed into a columnar melt and the columnar melt is constricted and separated into particles.

Particle producing method, particle, toner, developer, process cartridge, image forming method, image forming apparatus, and particle producing method

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

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Shizuoka, Japan

Chiaki Tanaka