An image forming apparatus includes: a first image forming unit that includes a first image holding member and a first developing unit, the first developing unit accommodating a first developer that includes a first toner and a first carrier; a first transfer unit; a second image forming unit that is disposed downstream of the first image forming unit in a traveling direction of a transfer medium and includes a second image holding member and a second developing unit, the second developing unit accommodating a second developer that includes a second toner and a second carrier; and a second transfer unit, in which a volume resistivity of the first carrier is higher than a volume resistivity of the second carrier, and a volume average particle diameter of the first carrier is more than a volume average particle diameter of the second carrier.

Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power, wherein the toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains 20.0% by mass or more and 100.0% by mass or less of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific monomer unit that interacts with the crystalline resin.

Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power. The toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains from 20.0% to 100.0% by mass of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific polymer moiety that interacts with the crystalline resin.

A method for producing a halogenated organic pigment comprising a halogenation step of halogenating an organic pigment with a halogenating agent, wherein the halogenating agent comprises one or more N-haloimide compounds selected from the group consisting of trichloroisocyanuric acid, a metal salt of dichloroisocyanuric acid, tribromoisocyanuric acid, and a metal salt of dibromoisocyanuric acid. According to the present invention, a method for producing a halogenated organic pigment which does not use high toxic raw materials, does not generate a large amount of unfavorable by-products such as hydrogen halide gas and succinimide, and is excellent in terms of safety and productivity can be provided.

To provide a magenta toner for electrostatic charge image development including a crystalline polyester resin and an amorphous resin as a binder resin, which is a means for improving low temperature fixability, scattering properties, GI value, saturation, and light fastness. A magenta toner for electrostatic charge image development including an amorphous resin and a crystalline polyester resin as a binder resin, wherein predetermined quinacridone-based pigment, metal element-containing monoazo pigment, and naphthol AS-based pigment are included as a coloring agent, and the combined content of the quinacridone-based pigment and the metal element-containing monoazo pigment is 50-90% by mass of the total coloring agent.

The invention relates to the use of pigment mixtures which contain at least one pigment of formulas (Ia) and (Ib), wherein, independent from each other, X1, X3 represent carbamoyl, C1-C4-alkylcarbamoyl, di(C1-C4)-alkylcarbamoyl, sulfamoyl, phenylsulfamoyl, C1-C4-alkylsulfamoyl or di(C1-C4)-alkylsulfamoyl; X2, X4 represents hydrogen, C1-C4-alkyl, C1-C4-alkoxy, halogen or nitro; Y1, Y2 represents hydrogen, halogen or C1-C4-alkyl, C1-C4-alkoxy or C1-C4-alkoxycarbonyl; and Z1, Z2 represents hydrogen, phenyl, naphthyl, benzimidazolonyl, substituted phenyl or substituted naphthyl, wherein the substituents can be 1, 2, 3 or 4 and selected from the groups halogen, nitro, cyano, C1-C4-alkoxycarbonyl, carbamoyl, C1-C4-alkylcarbamoyl, di(C1-C4)-alkylcarbamoyl, phenylcarbamoyl, sulfamoyl, phenylsulfamoyl, C1-C4-alkylsulfamoyl, di(C1-C4)-alkylsulfamoyl, C1-C4-acylamino, C1-C4-alkyl and C1-C4-alkoxy, and the pigments of formulas (Ia) and (Ib) are different. Said pigment mixtures are used as a dye in printing methods.

Provided is a toner having a toner particle including a binder resin and a colorant, wherein the colorant includes a compound represented by Formula (1) below, a crystal of the compound in the toner particle has a diffraction peak with a full width at half maximum of at least 0.400 and not more than 0.440 in a range of a diffraction angle 2 of at least 5.0 and not more than 6.0 in an X-ray diffraction spectrum using CuK rays,

##STR00001## in Formula (1), X.sub.1 and X.sub.2 each independently represent a hydrogen atom, a chlorine atom or a methyl group.

A high quality image excellent in low-temperature fixability and good in color stability can be formed by an image forming method of the present invention. In the image forming method, an image is formed by an electrophotographic method using toners of plural colors. Each of the toners of the plural colors contains a crystalline resin, methanol concentrations (%) at transmittance of 50% obtained for methanol wettability evaluation of the toners of the plural colors all fall in a range of 15 to 60%, and assuming that a maximum value and a minimum value of the methanol concentrations (%) at transmittance of 50% obtained for the methanol wettability evaluation of the toners of the plural colors are respectively WH (%) and WL (%), a relationship of 4WHWL30 is satisfied.

Provided is a magenta toner having a toner particle containing a binder resin, a wax and a colorant, wherein the colorant contains a specific amount of a compound (1), the colorant also contains one or more compounds selected from the group consisting of a naphthol compound, a quinacridone compound and a lake compound thereof in addition to the compound (1), and the binder resin contains a specific amount of a polyester resin.

##STR00001##

To provide a magenta toner for electrostatic charge image development including a crystalline polyester resin and an amorphous resin as a binder resin, which is a means for improving low temperature fixability, scattering properties, GI value, saturation, and light fastness.

A magenta toner for electrostatic charge image development including an amorphous resin and a crystalline polyester resin as a binder resin, wherein predetermined quinacridone-based pigment, metal element-containing monoazo pigment, and naphthol AS-based pigment are included as a coloring agent, and the combined content of the quinacridone-based pigment and the metal element-containing monoazo pigment is 50-90% by mass of the total coloring agent.