Canon Kabushiki Kaisha

Jfe Steel Corporation

Shota Amano

Yukio Takahashi

Takeshi Tsujino

Koki Inoue

Junya Asaoka

Naoki Kikuchi

Yuu Sasano

Yuhei Terui

Yuji Miki

Kenichi Nakayama

Nobuhiko Oda

Shohei Yamashita

Shintaro Kawaguchi

Goro Okuyama

Masahiro Kobayashi

Yusuke Vincent Fujii

Takashi Kenmoku

Shingo Sato

Yasuhiro Hashimoto

Takeshi Kaburagi

Toshifumi Kodama

Kohei Kato

Tomohiro Unno

Hirofumi Kyuushima

Shinji Koseki

Yuki Kono

Ryo Kawabata

Kenji Nakase

Kenta Katayama

Yumi Murakami

Atsuo Yuasa

Yuta Hino

Hiroto Kase

Shinji Tomiyama

A loop-type flash drying apparatus configured to dry an object to be treated with a gas by supplying the object into a gas stream circulating in a loop-type drying pipe, wherein the loop-type flash drying apparatus includes: (i) a loop-type drying pipe; (ii) a feeding port configured to feed an object to be treated into the drying pipe; (iii) a second blowing port configured to blow a gas into the drying pipe; (iv) a discharge port configured to discharge the object from the drying pipe; (v) a discharge region formed by the drying pipe and the discharge port; and (vi) a first blowing port through which a gas for accelerating a gas flowing in the discharge region is linearly blown toward the discharge region.

Flash drying apparatus and method of producing particles

A production method of a toner having a toner particle that contains a binder resin and an external additive that is externally added to the toner particle, wherein the production method has a toner particle dispersion step of obtaining a toner particle dispersion by dispersing the toner particle and an inorganic dispersant in an aqueous medium; and an external addition step of externally adding the external additive to the toner particle through addition of the external additive to the toner particle dispersion.

Method for producing a toner

A molten metal component estimation device including: an input device configured to receive measurement information about a refining facility including measurement results regarding an optical characteristic; a model database that stores model expressions and model parameters, regarding a blowing process reaction, including a model expression and model parameters representing a relation between the oxygen efficiency in decarburization and a carbon concentration in a molten metal in the refining facility; and a processor configured to: estimate component concentrations of the molten metal including the carbon concentration in the molten metal by using the measurement information, the model expressions and the model parameters; estimate the carbon concentration in the molten metal based on the measurement results; and determine the model expression and the model parameters to be used when estimating the component concentrations of the molten metal, based on the estimation result of the carbon concentration in the molten metal.

Molten metal component estimation device, method of estimating molten metal component, and method of manufacturing molten metal

A top-blowing lance nozzle is configured to freely switch an adequate expansion condition so as to control an oxygen-blowing amount and a jetting velocity independently of each other without requiring a plurality of lance nozzles or a mechanically movable part. A lance nozzle is configured to blow refining oxygen to molten iron charged in a reaction vessel while a gas is blown from a top-blowing lance to the molten iron. One or more blowing holes for blowing a working gas are on an inner wall side surface of the nozzle, at a site where the lance nozzle has a minimum cross-sectional area in a nozzle axis direction or at a neighboring site of the site.

Lance nozzle

A toner having a toner particle including a toner base particle and an organosilicon polymer coating the toner base particle, wherein when S1 (&#x3bc;m) is a total area of a non-coated part not coated with the organosilicon polymer on an outermost surface of the toner particle, S2 (&#x3bc;m) is a total area of a coated part coated with the organosilicon polymer on the outermost surface of the toner particle, and SA1 (&#x3bc;m) is a total of areas of non-coated part domains D1 with an area of not more than 0.10 &#x3bc;min size in the non-coated part not coated with the organosilicon polymer, formulae (1) and (2) below are satisfied.0.45&#x2264;[2/(1+2)]&#x2264;0.65&#x2003;&#x2003;(1)(1/1)&#x2265;0.50&#x2003;&#x2003;(2)

Toner

In a method for oxygen-blowing refining of molten iron, an oxygen-containing gas as a main supply gas is supplied from an inlet side of a blowing nozzle for the oxygen-containing gas passing through an outer shell of the top-blowing lance and blown from the blowing nozzle while a control gas is jetted toward inside of the blowing nozzle for at least part of a period of the oxygen-blowing refining from a spout arranged in a side face of the nozzle at a site where the cross-sectional area of the nozzle minimum takes the minimum in the axial direction of the nozzle or a neighborhood thereof so that at least part of the spout exists in each space formed by dividing into two portions by an arbitrary plane passing through a central axis of the nozzle.

Method for oxygen-blowing refining of molten iron and top-blowing lance

When the decarburization refining of molten iron is performed by top-blowing oxygen gas from the top blowing lance, the oscillation of molten iron, a bubble burst, and spitting due to the bubble burst are suppressed. A refining method for a converter includes decarburizing molten iron in the converter with a top blowing lance having Laval nozzles disposed at the lower end thereof by blowing oxygen gas on the surface of the molten iron in the converter through the Laval nozzles, in which one or both of an oxygen feeding rate from the top blowing lance and lance height LH are adjusted in such a manner that an oxygen accumulation index S(F) is 40 or less.

Method for operating converter

A toner comprising: a toner particle; and an external additive, wherein the external additive includes spherical silica particles and hydrotalcite particles, a number average particle diameter Da of the spherical silica particles is from 10 nm to 40 nm, a circularity of the spherical silica particles is at least 0.80, and the toner satisfies formula (1) below:{&#xd7;(1&#x2212;/100)}/{&#xd7;(1&#x2212;/100)}&#x2265;0.050&#x2003;&#x2003;(1)wherein Ga: a content of the spherical silica particles with respect to 100 parts by mass of the toner particle; Gb: a content of the hydrotalcite particles with respect to 100 parts by mass of the toner particle; Ka: a fixing ratio (%) of the spherical silica particles on a surface of the toner particle; and Kb: a fixing ratio (%) of the hydrotalcite particles on the surface of the toner particle.

A toner comprising: a toner particle that includes a binder resin, and an external additive, wherein the toner particle includes a polyester resin on the surface; the toner particle includes a polyvalent metal element; where an electrical resistivity of the polyvalent metal element at 20&#xb0; C. is denoted by A &#x3a9;&#xb7;m, and an amount of the polyvalent metal element in the toner particle is denoted by B &#x3bc;mol/g, a following relationship is satisfied:0.025&#xd7;10&#x2264;(1/)&#xd7;&#x2264;4.500&#xd7;10;

Toner and method for producing toner

A toner has a toner particle including a binder resin, a colorant, and a wax, in which in a cross section of the toner particle observed under a scanning transmission electron microscope, a proportion of the number of toner particles having a void with a long diameter of 0.50 &#x3bc;m or less is 60 number % or more, and a proportion of the number of toner particles having a void in a region from an outline of the cross section of the toner particle inward to 1.00 &#x3bc;m in a total number of the toner particles having a void is 30 number % or less.

Toner and method for producing the toner

A toner comprising a toner particle having a binder resin and a colorant, and metal titanate fine particles, wherein the toner particle includes a polyvalent metal element having an electric resistivity of from 2.5&#xd7;10&#x3a9;&#xb7;m to 10.0&#xd7;10&#x3a9;&#xb7;m; the amount of the polyvalent metal element in the toner particle is from 0.080 &#x3bc;mol/g to 20.000 &#x3bc;mol/g; the metal titanate fine particles have a perovskite crystal structure; and the number average particle diameter of primary particles of the metal titanate fine particles is from 10 nm to 80 nm.

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Yokohama, Japan

Shota Amano