Abstract: A magnetic carrier according to the present invention includes a magnetic carrier core and a resin covering layer formed on a surface of the magnetic carrier core, wherein the resin covering layer contains a resin component and an inorganic fine particle, the inorganic fine particle contains an oxide of a typical metal element or a carbonate of a typical metal element, a moisture adsorption rate of the inorganic fine particle when allowed to stand in an environment of a temperature of 30° C. and a humidity of 80% for 72 hours is 25.0% by mass or less, an electrical conductivity of the inorganic fine particle is 2.0×10?9 ?S/m or more and 2.5×10?5 ?S/m or less, and a degree of crystallinity of the inorganic fine particle is 60% or less.

Abstract: A toner comprises a binder resin, a colorant, and a compound represented by the following general formula [1]: (in the formula, R1 to R8 each independently represent a group selected from the hydrogen atom, fluorine atom, bromine atom, iodine atom, hydroxy group, acetyl group, aldehyde group, C1 to C6 hydrocarbon groups, and amino group; X represents a group selected from the oxygen atom, sulfur atom, carbonyl group, and —CR9R10—; and R9 and R10 each independently represent a group selected from the hydrogen atom, bromine atom, C1 to C3 hydroxyalkyl groups, hydroxy group, phenyl group, and C1 to C6 hydrocarbon groups).

Abstract: A magnetic carrier comprising: a magnetic material-dispersed resin carrier core material; and a resin coating layer on the surface of the magnetic material-dispersed resin carrier core material, wherein the magnetic material-dispersed resin carrier core material contains a core material particle containing a magnetic material and a binder resin, and a primer compound having an amino group, the resin coating layer contains a coating resin A, which is a polymer of monomers including at least a (meth)acrylic acid ester having an alicyclic hydrocarbon group, and the content of the primer compound in the magnetic material-dispersed resin carrier core material and the content of the resin coating layer are in specific range.

Abstract: Provided is a magnetic carrier, including: a ferrite core particle; and a coating resin, in which: the coating resin has a surface resin layer and a resin composition in the stated order from a surface side thereof; the resin composition contains a resin, and an inorganic particle or carbon black that is subjected to a hydrophilic treatment; the surface resin layer contains a resin, is free of the inorganic particle or the carbon black, and has a thickness of from 0.01 ?m or more to 4.00 ?m or less; and a moisture percentage change between a moisture percentage when the magnetic carrier is left to stand under an environment of 30° C. and 80% RH for 24 hours, and a moisture percentage when the magnetic carrier is left to stand under an environment of 23° C. and 5% RH for 24 hours after the standing is 0.030 mass % or less.

Abstract: A magnetic carrier having a ferrite-type core material and a resin coat layer present on the surface of the ferrite-type core material, wherein the ferrite-type core material contains a magnetic ferrite-type core material particle and an amino group-bearing primer compound; the resin coat layer contains a coating resin A that is a polymer of monomer containing a (meth)acrylate ester having an alicyclic hydrocarbon group; the content of the amino group-bearing primer compound in the ferrite-type core material and the content of the resin coat layer in the magnetic carrier are within the prescribed range.

Abstract: Provided is a magnetic toner which exhibits a high degree of blackness and high tinting strength, and in which scraping of a toner carrying member surface by the magnetic toner is not caused, and image defects such as fogging and tailing are suppressed. A magnetic toner comprising a magnetic toner particle that contains a binder resin and a magnetic iron oxide particle, wherein, the number-average particle diameter of the magnetic iron oxide particle ranges from 0.05 ?m to 0.15 ?m, and a relationship between the number-average particle diameter (?m) of the magnetic iron oxide particle and the specific surface area (m2/g) of the magnetic iron oxide particle satisfies Expression (1) below. [Number?average particle diameter]×[specific surface area]?1.10??(1).

Abstract: A toner comprises a binder resin, a colorant, and a compound represented by the following general formula [1]: (in the formula, R1 to R8 each independently represent a group selected from the hydrogen atom, fluorine atom, bromine atom, iodine atom, hydroxy group, acetyl group, aldehyde group, C1 to C6 hydrocarbon groups, and amino group; X represents a group selected from the oxygen atom, sulfur atom, carbonyl group, and —CR9R10—; and R9 and R10 each independently represent a group selected from the hydrogen atom, bromine atom, C1 to C3 hydroxyalkyl groups, hydroxy group, phenyl group, and C1 to C6 hydrocarbon groups).

Abstract: The present invention is a toner including a toner particle containing a binder resin and a charge control agent, wherein the binder resin includes a resin having a polyester unit with at least one aliphatic compound condensed to the terminal thereof, the at least one aliphatic compound being selected from the group consisting of aliphatic monocarboxylic acids each having 30 or more and 102 or less carbon atoms and aliphatic monoalcohols each having 30 or more and 102 or less carbon atoms; and the charge control agent includes a specific compound (a pyrazolone monoazo metal compound).

Abstract: The present invention is a magnetic carrier that has a magnetic carrier core and a resin coat layer, wherein the resin coat layer contains a coat resin A and a coat resin B, the coat resin A is a polymer obtained by polymerization of a (meth)acrylate ester monomer that has an alicyclic hydrocarbon group, the coat resin B is a polymer obtained by polymerization of (meth)acrylic monomer and has a polar group and an acid value of 4.0 to 50.0 mg KOH/g, the content of the coat resin A is 10 to 90 mass %, the content of the coat resin B is 10 to 90 mass %, and an acid value of the resin component in the resin coat layer is 1.0 to 10.0 mg KOH/g.

Abstract: A magnetic carrier comprising:a magnetic material-dispersed resin carrier core material; and a resin coating layer on the surface of the magnetic material-dispersed resin carrier core material, wherein the magnetic material-dispersed resin carrier core material contains a core material particle containing a magnetic material and a binder resin, and a primer compound having an amino group, the resin coating layer contains a coating resin A, which is a polymer of monomers including at least a (meth)acrylic acid ester having an alicyclic hydrocarbon group, and the content of the primer compound in the magnetic material-dispersed resin carrier core material and the content of the resin coating layer are in specific range.

Abstract: A magnetic carrier includes resin-filled magnetic core particles including porous magnetic particles whose pores are filled with a resin, and resin coating layers on the surfaces of the resin-filled magnetic core particles. The porous magnetic particles have specific electrical properties.

Abstract: Provided is a magnetic carrier, including: a ferrite core particle; and a coating resin, in which: the coating resin has a surface resin layer and a resin composition in the stated order from a surface side thereof; the resin composition contains a resin, and an inorganic particle or carbon black that is subjected to a hydrophilic treatment; the surface resin layer contains a resin, is free of the inorganic particle or the carbon black, and has a thickness of from 0.01 ?m or more to 4.00 ?m or less; and a moisture percentage change between a moisture percentage when the magnetic carrier is left to stand under an environment of 30° C. and 80% RH for 24 hours, and a moisture percentage when the magnetic carrier is left to stand under an environment of 23° C. and 5% RH for 24 hours after the standing is 0.030 mass % or less.

Abstract: A magnetic carrier contains a resin-filled magnetic core particle and a resin covering layer provided on a surface of the resin-filled magnetic core particle. The resin-filled magnetic core particle is a porous magnetic particle containing a resin in pores thereof. The magnetic carrier has a 50% particle diameter (D50) of 30.0 ?m or more and 80.0 ?m or less on a volume basis. An electric current flowing through the magnetic carrier at a voltage of 500 V ranges from 8.0 to 50.0 ?A. A proportion JR1 of a composition that is made up of the resin in a magnetic carrier portion of a region R1 and a proportion JR2 of the composition in a magnetic carrier portion of a region R2 satisfy the following relationship. The region R1 and the region R2 are illustrated in FIG. 1. 1.20?JR2/JR1?2.00.

Abstract: Provided is a magnetic carrier, including magnetic carrier particles each including: a magnetic carrier core including a magnetic material and a resin; and a resin coating layer formed on a surface of the magnetic carrier core, in which: the resin included in the magnetic carrier core has a hydroxy group; a surface portion of the magnetic carrier core includes a specific compound; and the magnetic carrier has an adsorbed moisture amount of 0.40 mass % or less when the magnetic carrier is left to stand in an environment of a temperature of 30° C. and a humidity of 80% RH for 72 hours.

Abstract: A magnetic carrier according to the present invention includes a magnetic carrier core and a resin covering layer formed on a surface of the magnetic carrier core, wherein the resin covering layer contains a resin component and an inorganic fine particle, the inorganic fine particle contains an oxide of a typical metal element or a carbonate of a typical metal element, a moisture adsorption rate of the inorganic fine particle when allowed to stand in an environment of a temperature of 30° C. and a humidity of 80% for 72 hours is 25.0% by mass or less, an electrical conductivity of the inorganic fine particle is 2.0×10?9 ?S/m or more and 2.5×10?5 ?S/m or less, and a degree of crystallinity of the inorganic fine particle is 60% or less.

Abstract: Provided is a magnetic toner, including a toner particle containing a binder resin and a magnetic iron oxide particle, in which: the binder resin includes a resin having a polyester unit in which at least one kind of aliphatic compound selected from the group consisting of an aliphatic monocarboxylic acid having 30 to 102 carbon atoms and an aliphatic monoalcohol having 30 to 102 carbon atoms is condensed at an end of the polyester unit; a content of the magnetic iron oxide particle is from 30 to 80 parts by mass with respect to 100 parts by mass of the binder resin; and the magnetic iron oxide particle satisfies the following conditions: (i) a number-based median diameter D50 is from 0.05 to 0.15 ?m; (ii) a number-based ratio D10/D50 is from 0.40 to 1.00; and (iii) a number-based ratio D90/D50 is from 1.00 to 1.50.

Abstract: There is provided a magnetic carrier having a resin coating layer formed on the surface of each of particles prepared by putting resin in the pores of porous magnetic particles, wherein (i) the surface roughness Ra of the porous magnetic particles ranges from 0.180 ?m to 0.250 ?m, (ii) the pore size ranges from 0.40 ?m to 1.00 ?m, (iii) the amount of the resin held in the pores ranges from 3.0 parts by mass to 5.5 parts by mass relative to 100 parts by mass of the porous magnetic particles, (iv) the amount of resin used for forming the coating resin layer ranges from 1.0 parts by mass to 3.0 parts by mass relative to 100 parts by mass of the porous magnetic particles, and (v) the surface roughness Ra of the magnetic carrier ranges from 0.160 ?m to 0.220 ?m.

Abstract: The present invention is a magnetic carrier that has a magnetic carrier core and a resin coat layer, wherein the resin coat layer contains a coat resin A and a coat resin B, the coat resin A is a polymer obtained by polymerization of a (meth)acrylate ester monomer that has an alicyclic hydrocarbon group, the coat resin B is a polymer obtained by polymerization of (meth)acrylic monomer and has a polar group and an acid value of 4.0 to 50.0 mg KOH/g, the content of the coat resin A is 10 to 90 mass %, the content of the coat resin B is 10 to 90 mass %, and an acid value of the resin component in the resin coat layer is 1.0 to 10.0 mg KOH/g.

Abstract: Provided is a magnetic toner, including a toner particle containing a binder resin and a magnetic iron oxide particle, in which: the binder resin includes a resin having a polyester unit in which at least one kind of aliphatic compound selected from the group consisting of an aliphatic monocarboxylic acid having 30 to 102 carbon atoms and an aliphatic monoalcohol having 30 to 102 carbon atoms is condensed at an end of the polyester unit; a content of the magnetic iron oxide particle is from 30 to 80 parts by mass with respect to 100 parts by mass of the binder resin; and the magnetic iron oxide particle satisfies the following conditions: (i) a number-based median diameter D50 is from 0.05 to 0.15 ?m; (ii) a number-based ratio D10/D50 is from 0.40 to 1.00; and (iii) a number-based ratio D90/D50 is from 1.00 to 1.50.

Abstract: A toner comprising a binder resin and a wax, wherein the binder resin contains a binder resin A and a binder resin B, the binder resin A has a softening point of at least 120° C. and not more than 150° C., has a polyester unit, and has a terminal of which a first aliphatic compound having a melting point of 60° C. or more and not more than 85° C. has been condensed, and the binder resin B has a softening point of at least 80° C. and not more than 115° C., has a polyester unit, and has a terminal of which a second aliphatic compound having a melting point of 90° C. or more and not more than 120° C. has been condensed.