Abstract: A toner is provided which includes: a toner base particle including a binder resin; and an external additive including inorganic particles. A particle size distribution of primary particles of the inorganic particles has a plurality of peaks in the range of from 5 nm through 50 nm. The particle size distribution of the primary particles satisfies all of expressions (1) to (3) below: n1d>n2d??(1); 10<(n1d+n2d)??(2); and 30?{(n2h/n1h)×100}<100??(3), where n1d is a particle diameter (nm) at a peak n1 which is the highest peak among the plurality of peaks and n2d is a particle diameter (nm) of a peak n2 which is the second highest peak among the plurality of peaks, and n1h is a height of the peak n1 and n2h is a height of the peak n2.

Abstract: A toner is provided which includes: a toner base particle including a binder resin; and an external additive including inorganic particles. A particle size distribution of primary particles of the inorganic particles has a plurality of peaks in the range of from 5 nm through 50 nm. The particle size distribution of the primary particles satisfies all of expressions (1) to (3) below: n1d>n2d ??(1); 10<(n1d+n2d) ??(2); and 30{(n2h/n1h)×100}<100 ??(3), where n1d is a particle diameter (nm) at a peak n1 which is the highest peak among the plurality of peaks and n2d is a particle diameter (nm) of a peak n2 which is the second highest peak among the plurality of peaks, and n1h is a height of the peak n1 and n2h is a height of the peak n2.

Abstract: A toner is provided. The toner comprises a binder resin, a metal-containing azo dye, and a quaternary ammonium salt, has an average circularity of from 0.85 to 0.95, and is free of a tin compound having Sn—C bond.

Abstract: A toner containing a mother toner particle containing a binder resin, a releasing agent, and a coloring agent and an external additive comprising an inorganic particulate, which is mixed with the mother toner particle in a mixing process by a mixer, wherein the external additive is isolated from the mother toner particle by ultrasonic vibration and collected, in an aqueous solution comprising a polyoxyethylene lauryl ether compound serving as a surface active agent, in an amount of from 0.1 ppm to 10 ppm/(toner 4 g/100 ml) as measured by atomic absorption spectrometry.

Abstract: A method for treating an electrophotographic carrier, including treating, with supercritical pure water, the electrophotographic carrier containing at least a core material and a coating layer, so that the coating layer is separated from the core material, wherein the supercritical pure water is obtained by bringing, into a supercritical state, pure water having an electrical conductivity at 25° C. of 1 ?S·cm or lower.

Abstract: This invention relates to a stress-inducible transcription factor derived from maize, a gene encoding the same, and a method for using the same. Specifically, this invention provides a gene comprising the following DNA (a) or (b): (a) DNA consisting of the nucleotide sequence as shown in SEQ ID NO: 1; or (b) maize-derived DNA hybridizing under stringent conditions with DNA consisting of a nucleotide sequence that is complementary to the DNA consisting of the nucleotide sequence as shown in SEQ ID NO: 1 and encoding a protein that regulates the transcription of a gene located downstream of a stress responsive element. Further, this invention relates to a transgenic plant having improved tolerance to environmental stress, such as high-temperature or dehydration stress, into which such gene has been introduced.

Abstract: This invention relates to a stress-inducible transcription factor derived from maize, a gene encoding the same, and a method for using the same. Specifically, this invention provides a gene comprising the following DNA (a) or (b): (a) DNA consisting of the nucleotide sequence as shown in SEQ ID NO: 1; or (b) maize-derived DNA hybridizing under stringent conditions with DNA consisting of a nucleotide sequence that is complementary to the DNA consisting of the nucleotide sequence as shown in SEQ ID NO: 1 and encoding a protein that regulates the transcription of a gene located downstream of a stress responsive element. Further, this invention relates to a transgenic plant having improved tolerance to environmental stress, such as high-temperature or dehydration stress, into which such gene has been introduced.

Abstract: Disclosed is a milling and classifying apparatus, adapted to produce toner fine particles, comprising a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle room, a path, a collision plate, and a collision member mounted to a support of the collision plate at downstream of the collision plate, the air classifier comprises a dispersion room and a classification room, the classification room is disposed below the dispersion room, and a flow stabilizer is arranged at a central suction of the separator core to control swirl stream generated within the classification room so as to centrifuge the powder into coarse particles and fine particles by action of the swirl stream.

Abstract: Disclosed is a milling and classifying apparatus, adapted to produce toner fine particles, comprising a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle room, a path, a collision plate, and a collision member mounted to a support of the collision plate at downstream of the collision plate, the air classifier comprises a dispersion room and a classification room, the classification room is disposed below the dispersion room, and a flow stabilizer is arranged at a central suction of the separator core to control swirl stream generated within the classification room so as to centrifuge the powder into coarse particles and fine particles by action of the swirl stream.