Color toner for electrophotography and color toner set for electrophotography using the same, color developer for electrophotography, method for forming color image, and apparatus for forming color image

1. A magenta toner for electrophotography, comprising:

a binder resin having a storage modulus (G′ 100 ) (100° C.) of 9.0×10 3 to 4.0×10 4 dyn/cm 2 ; and

C.I. pigment Violet 19 wherein said binder resin is the only binder resin within the magenta toner.

2. A color toner set for electrophotography, comprising:

a magenta toner which comprises a binder resin; and

at least any of a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the binder resin in the magenta toner has a storage modulus (G′ 100 ) (100° C.) of (1/1.1) to (1/10) times a storage modulus (G′ 100 ) (100° C.) of a binder resin contained in the yellow toner and the cyan toner.

3. The color toner set for electrophotography according to claim 2 , wherein the magenta toner comprises C.I. pigment Violet 19.

4. A color toner set for electrophotography, comprising:

a magenta toner which comprises a binder resin having a storage modulus (G′ 100 ) (100° C.) of 9.0×10 3 to 4.0×10 4 dyn/cm 2 , and C.I. pigment Violet 19; and

at least any of a yellow toner and a cyan toner each containing a binder resin having a storage modulus (G′ 100 ) (100° C.) of 4.4×10 4 to 8.0×10 5 dyn/cm 2 ,

the color toner set being used for forming a multicolor image.

5. A color toner set for electrophotography, comprising:

a magenta toner which comprises a binder resin, and C.I. pigment Violet 19;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner contains a pigment having a particle diameter (primary average particle diameter (nm)) of 1.5 times or more a particle diameter (primary average particle diameter (nm)) of a pigment contained in the yellow toner and the cyan toner.

6. A color toner set for electrophotography, comprising:

a magenta toner which comprises a binder resin, C.I. pigment Violet 19, and an infrared absorbent;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner has a content of an infrared absorbent higher than a content of an infrared absorbent in each of the yellow toner and the cyan toner.

7. A color toner set for electrophotography, comprising:

a magenta toner which comprises a binder resin, C.I. pigment Violet 19, and waxes;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner has a content of the waxes higher than a content of waxes in each of the yellow toner and the cyan toner.

8. An apparatus for forming a color image, comprising:

a color toner set for electrophotography;

an electrostatic latent image carrier;

means for forming an electrostatic latent image on the electrostatic latent image carrier;

means for developing the electrostatic latent image using the color toner set for electrophotography, and forming a visible image, wherein the means for developing comprises the color toner set for electrophotography;

means for transferring the visible image onto a recording medium; and

means for flash fixing a transfer image transferred onto the recording medium,

wherein the color toner set for electrophotography comprises:

a magenta toner which comprises a binder resin; and

at least any of a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the binder resin in the magenta toner has a storage modulus (G′ 100 ) (100° C.) of (1/1.1) to (1/10) times a storage modulus (G′ 100 ) (100° C.) of a binder resin contained in the yellow toner and the cyan toner.

9. An apparatus for forming a color image according to claim 8 , wherein an optical energy during flash fixing by the means for flash fixing is 2 to 7 J/cm 2 .

10. An apparatus for forming a color image, comprising:

a color toner set for electrophotography;

an electrostatic latent image carrier;

means for forming an electrostatic latent image on the electrostatic latent image carrier;

means for developing the electrostatic latent image using the color toner set for electrophotography, and forming a visible image, wherein the means for developing comprises the color toner set for electrophotography;

means for transferring the visible image onto a recording medium; and

means for flash fixing a transfer image formed by the visible image being transferred onto the recording medium,

the color toner set for electrophotography, comprises:

a magenta toner which comprises a binder resin having a storage modulus (G′ 100 ) (100° C.) of 9.0×10 3 to 4.0×10 4 dyn/cm 2 ; and C.I. pigment Violet 19; and

at least any of a yellow toner and a cyan toner each containing a binder resin with a storage modulus (G′ 100 ) (100° C.) of 4.4×10 4 to 8.0×10 5 dyn/cm 2 ,

the color toner set being used for forming a multicolor image.

11. An apparatus for forming a color image, comprising:

a color toner set for electrophotography;

an electrostatic latent image carrier;

means for forming an electrostatic latent image on the electrostatic latent image carrier;

means for developing the electrostatic latent image using the color toner set for electrophotography, and forming a visible image, wherein the means for developing comprises the color toner set for electrophotography;

means for transferring the visible image onto a recording medium; and

means for flash fixing a transfer image formed by the visible image being transferred onto the recording medium,

wherein the color toner set for electrophotography comprises:

a magenta toner which comprises a binder resin, and C.I. pigment Violet 19;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner contains a pigment having a particle diameter (primary average particle diameter (nm)) 1.5 times or more a particle diameter (primary average particle diameter (nm)) of a pigment contained in the yellow toner and the cyan toner.

12. An apparatus for forming a color image, comprising:

a color toner set for electrophotography;

an electrostatic latent image carrier;

means for forming an electrostatic latent image on the electrostatic latent image carrier;

means for developing the electrostatic latent image using the color toner set for electrophotography, and forming a visible image, wherein the means for developing comprises the color toner set for electrophotography;

means for transferring the visible image onto a recording medium; and

means for flash fixing a transfer image formed by the visible image transferred onto the recording medium,

wherein the color toner set for electrophotography comprises:

a magenta toner which comprises a binder resin, C.I. pigment Violet 19, and an infrared absorbent;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner has a content of an infrared absorbent higher than a content of an infrared absorbent in each of the yellow toner and the cyan toner.

13. An apparatus for forming a color image, comprising:

a color toner set for electrophotography;

an electrostatic latent image carrier;

means for forming an electrostatic latent image on the electrostatic latent image carrier;

means for developing the electrostatic latent image using a color toner set for electrophotography, and forming a visible image, wherein the means for developing comprises the color toner set for electrophotography;

means for transferring the visible image onto a recording medium; and

means for flash fixing a transfer image transferred onto the recording medium,

wherein the color toner set for electrophotography comprises:

a magenta toner which comprises a binder resin, C.I. pigment Violet 19, and waxes;

a yellow toner and a cyan toner,

the color toner set being used for forming a multicolor image,

wherein the magenta toner has a content of the waxes higher than a content of waxes in each of the yellow toner and the cyan toner.