Abstract: Provided are: a copper phthalocyanine pigment which contains at least one kind of copper phthalocyanine microparticles whose crystal type is any of two kinds of ?- and ?-type crystals and that exhibits, in a region of 380 nm to 780 nm, an absorption spectrum shape extremely similar to that of ?-form copper phthalocyanine microparticles; and a process for the production of the copper phthalocyanine microparticles. Also provided are: a copper phthalocyanine pigment which contains at least one kind of coper phthalocyanine microparticles whose crystal type is any of two kinds of ?- and ?-type crystals and that exhibits a wavelength (?-max) of shorter than 478 nm in the transmission spectrum in a region of 380 nm to 780 nm, said wavelength (?-max) being a wavelength at which the maximum transmittance appears; and a process for the production of the copper phthalocyanine microparticles.

Abstract: The problem addressed by the present invention is to provide; solid solution pigment nanoparticles having a homogeneous solid solution ratio; a method for producing solid solution pigment nanoparticles having a homogeneous solid solution ratio in each primary particle; and a method for controlling the solid solution ratio of solid solution pigment nanoparticles. The solid solution pigment nanoparticles are prepared by precipitating at least two types of pigment by mixing a pigment precipitation solvent and; at least one type of pigment solution wherein at least two types of pigment are dissolved in a solvent: or at least two types of pigment solution wherein at least one type of pigment is dissolved in a solvent.

Abstract: A method for producing a nanoparticle to separate a diketopyrrolopyrrole pigment includes separating an ?-type diketopyrrolopyrrole pigment nanoparticle having high crystallinity by carrying out separation of the diketopyrrolopyrrole pigment and crystal type transformation to the ?-type with substantially a single step. The ?-type diketopyrrolopyrrole pigment nanoparticle is separated by mixing a diketopyrrolopyrrole pigment solution having the diketopyrrolopyrrole pigment dissolved in a solvent and an alcohol solvent containing an alcohol compound solvent in a thin film fluid formed between at least two processing surfaces 1 and 2 arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other. An acidic substance is contained in at least any one of the diketopyrrolopyrrole pigment solution and the alcohol solvent at this moment.

Abstract: The problem addressed by the present invention is to provide a method for producing microparticles. Provided is a method that is for producing microparticles and that is characterized by containing at least the following two steps: (I) a step for preparing a microparticle starting material solution by dissolving at least one type of microparticle starting material in a solvent using high speed stirring or ultrasonic waves, and (II) a step for precipitating microparticles by mixing the microparticle starting material solution and at least one type of precipitation solvent for precipitating the microparticle starting material in a thin film fluid formed between at least two processing surfaces that are disposed facing each other, are able to approach/separate from each other, and of which at least one rotates relative to the others.

Abstract: A method for controlling the particle size of deposited fine particles in a fine particle production method is provided. The method introduces a fluid to be processed between at least two processing surfaces, which are disposed facing each other and are advancible and retractable, at least one of the two processing surfaces rotating relative to the other, to deposit fine particles in the thin fluid film formed between the two processing surfaces. The particle size of the fine particles is controlled by controlling the temperature of the fluid that contains the separated fine particles. The temperature control can be accomplished by providing a temperature adjusting apparatus and a jacket in the flow channel or receptacle for the fluid after outflow and controlling the temperature of the fluid that contains the deposited fine particles.

Abstract: Provided is a producing method for metal microparticles for which the particle diameter is controlled. At least two types of fluids to be processed are used, and at least one of those fluids to be processed is a metallic solution wherein a metal and/or metallic compound is dissolved in a solvent. Of the fluids to be processed other than the above, at least one is a reducing agent fluid that includes a reducing agent. The fluids to be processed are mixed in a thin film fluid created between at least two processing surfaces (1, 2) which are disposed to face each other and can be brought closer or separated, at least one face rotating relative to the other, and metal microparticles for which the particle diameter is controlled are precipitated out. At that time, the particle diameter of the metal microparticles is controlled by varying particular conditions for at least one of the metallic solution and the reducing agent fluid introduced between the processing surfaces (1, 2).

Abstract: Provided is a more suitable method for producing ceramic microparticles. The present invention uses at least two types of fluids to be processed; at least one of the fluids to be processed is a fluid containing a ceramic starting material liquid that mixes and/or dissolves a ceramic starting material in a basic solvent; of the fluids aside from the ceramic starting material liquid, at least one of the fluids to be processed is a fluid containing a solvent for precipitating ceramic microparticles; and ceramic microparticles are precipitated by mixing the fluid containing the ceramic starting material liquid and the fluid containing the solvent for precipitating ceramic microparticles within a thin film fluid formed between at least two surfaces (1,2) for processing that are provided facing each other, are able to approach and separate each other, and of which one is able to rotate with respect to the other.

Abstract: A method is provided for producing separated substances, particularly metal compounds, the dopant element amounts of which have been controlled by the use of an apparatus that processes fluid between the processing surfaces of a processing member that can be made to approach/separate and which rotate relative to each other. The substance to be separated is separated by mixing a raw material solution, wherein the substance to be separated is solubilized in a solvent, with the solvent for separation and with the dopant element or dopant element-containing substance solubilized in at least one solvent selected from the solvent of said raw material solution, said solvent for separation or a solvent other than that of said raw material solution or said solution for separation. Separated substances with controlled dopant element amounts are obtained by controlling the solubility of the dopant element or dopant element-containing substance in the solvent for separation.

Abstract: It is an object to provide a method for producing compound semiconductor particles in which monodisperse compound semiconductor particles can be prepared according to the intended object, clogging with products does not occur due to self-dischargeability, a large pressure is not necessary, and productivity is high. In producing compound semiconductor particles by separating and precipitating, in a fluid, semiconductor raw materials, the fluid is formed into a thin film fluid between two processing surfaces arranged so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, and the semiconductor raw materials are separated and precipitated in the thin film fluid.

Abstract: A fluid processing method with which processing properties of fluids to be processed can be effectively controlled. Processing surfaces which are capable of being brought closer to each other and being separated from each other, and which rotate relatively are provided. A fluid to be processed is made to pass from inside to outside in a processing area between the processing surfaces to obtain a fluid thin film, and the resultant fluid thin film of the fluid to be processed is subjected to processing. Processing properties are controlled by changing the ratio of the distance to an outer peripheral end from a centre of rotation.

Abstract: The present invention addresses the problem of providing producing processes for garnet precursor microparticles (a precursor for microparticles of garnet structure) and microparticles of garnet structure. One of the processing processes comprises mixing ions of at least two elements with a basic substances that contain the at least two elements. The thin-film fluid is formed between at least two processing surfaces which are approachably and separably arranged facing each other with at least one of the processing surfaces rotating relative to the other. In the processing process, the precipitated microparticles are garnet precursor microparticles, and the molar ratio between the at least two elements in the garnet precursor microparticles is regulated by controlling the pH of the thin-film fluid after the mixing. Microparticles of garnet structure can be obtained by subjecting the garnet precursor microparticles to heat treatment.

Abstract: The surface of fine pigment particles is efficiently treated using low energy without causing a cost increase. Provided is a method of treating the surface of fine pigment particles, characterized by maintaining a small gap of 1 mm or narrower between two treating surfaces which are able to get close to and apart from each other and relatively rotate and using the gap between the two treating surfaces which is kept so narrow, as a passage for a fluid to be treated, thereby forming a thin film of the fluid to be treated (forced thin film). Fine pigment particles are formed in this thin-film fluid (forced thin film). The method is further characterized by modifying the surface of the formed fine pigment particles within the thin-film fluid (forced thin film).

Abstract: A method for producing a high-quality barium titanyl salt includes using, as the fluids to be treated, at least two kinds of fluids, namely, a barium titanium mixed solution that is obtained by dissolving both a barium compound and a titanium compound in a solvent, a compound solution that is obtained by dissolving, in a solvent, a compound capable of deposing the barium and titanium contained in the barium-titanium mixed solution into a barium titanyl salt, and if necessary, one or more other fluids; and mixing these fluids together in a thin film fluid formed at least between two treating surfaces and to form a barium titanyl salt. The treating surfaces are so arranged as to face each other in an approachable/separable state with one of the treating surfaces and being capable of turning relatively to the other.

Abstract: The present invention provides a method for producing nanoparticles, which comprises maintaining a minute space of 1 mm or less between two processing surfaces capable of approaching to and separating from each other and being rotating relative to each other, allowing the minute space maintained between the two processing surfaces to serve as a flow path of a processed fluid thereby forming a forced thin film of the processed fluid and separating nanoparticles in the forced thin film.

Abstract: A stirring-processing apparatus and a processing method are provided to realize excellent processing of a fluid regardless of the properties of the fluid. The stirring-processing apparatus is provided with the stirring blade and the stirring chamber provided with the screen, wherein the apparatus performs, under a state in which the stirring chamber is disposed in a fluid to be processed, a process of applying a shear force to the fluid by a relative rotation between the screen and the stirring blade. The stirring chamber is provided with the suction opening to suck the fluid from outside to inside and the ejecting opening to eject the fluid from inside to outside; these openings being disposed above and below. The suppressing body to control a flow of the fluid is disposed between the suction opening and the ejecting opening.

Abstract: A stirrer is capable of finely dispersing or emulsifying well. A stirrer in which: the stirrer is provided with a rotating rotor equipped with multiple blades and a screen that is placed around the rotor and has multiple slits; the blade and the slits are provided at least with matching regions that are at the same position in the axial direction of the rotor rotation axis; and the fluid being processed is discharged outward from inside the screen as an intermittent jet flow through the slits as a result of the rotation of the rotor.

Abstract: In response to the demand for shape-controlled metal microparticles accompanying rapid development and progress in industry in recent years, metal microparticles, which have projections on the surfaces of the particles that are integrated with the particles, are provided. The metal microparticles have integrated conical projections on the surfaces of the particles, and at least some of the projections are more than ¼ of the size of the particles. The protrusions that protrude from the metal microparticles melt and deform at a temperature lower than the melting point of the metal itself.

Abstract: Provided is a method for producing metal microparticles in which the ratio of crystallite diameter to the particle diameter of the metal microparticles is controlled. At least two types of fluid to be processed are used, including a metal fluid in which a metal or a metal compound is dissolved in a solvent, and a reducing agent fluid which includes a reducing agent. Sulfate ions are included in one or both of the metal fluid and the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces, at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and metal microparticles are precipitated.

Abstract: Provided is a method for producing an oxide and/or hydroxide wherein the ratio of oxide and hydroxide has been controlled. The method produces an oxide, a hydroxide, or a mixture thereof, and obtains an oxide and/or a hydroxide wherein the ratio of oxide and hydroxide has been controlled by means of changing a specific condition relating to at least one fluid to be processed introduced between processing surfaces (1, 2) when causing the precipitation of the oxide, hydroxide, or mixture thereof by mixing an basic fluid containing at least one type of basic substance and a fluid containing at least one type of metal or metallic substance as the fluids to be processed between the processing surfaces (1, 2) that are provided facing each other, are able to approach to and separate from each other, and of which at least one rotates relative to the other.

Abstract: The present invention addresses the problem of providing a method for producing metal microparticles in which the particle diameter and the coefficient of variation are controlled. Using at least two kinds of fluid to be processed including a fluid which contains at least one kind of reducing agent, the fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces, at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and metalmicroparticles are separated.