# US 2017/0285518 A1 · Electrostatic charge image developing toner set, electrostatic charge image developer set, and toner cartridge set

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- Number: US 2017/0285518 A1
- Document ID: US20170285518A1
- Status: Published application
- Kind: A1
- Application number: 15/222,685
- Filed: 2016-07-28
- Published: 2017-10-05
- Earliest claimed: 2016-03-29
- Assignees: Fuji Xerox Co., Ltd.
- Applicants: Fuji Xerox Co., Ltd.
- Inventors: Satomi HARA; Masaru TAKAHASHI; Atsushi SUGAWARA; Sakiko HIRAI
- Web page: https://patentgrep.com/patent/US20170285518A1

## CPC

- G03G 15/0865: {Arrangements for supplying new developer}
- G03G 9/0823: {Electric parameters}
- G03G 9/0827: {characterised by their shape, e.g. degree of sphericity}
- G03G 9/08755: {Polyesters}
- G03G 9/08797: {characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature}
- G03G 9/0926: {characterised by physical or chemical properties}
- G03G 15/0126: {using a solid developer}
- G03G 15/6585: {by using non-standard toners, e.g. transparent toner, gloss adding devices}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

An electrostatic charge image developing toner set includes a brilliant toner including toner particles that include a brilliant pigment and a first binder resin, a black toner including toner particles that include a second binder resin, and a color toner except a black toner, including toner particles that include a third binder resin, wherein the brilliant toner, the black toner and the color toner satisfy Expression (1): Dielectric loss factor of the brilliant Toner>Dielectric loss factor of the black toner>Dielectric loss factor of the color toner and Expression (2): 25×10−3≦(Dielectric loss factor of the brilliant toner)−(Dielectric loss factor of the color toner)≦95×10−3.

## Claims

### Claim 1

An electrostatic charge image developing toner set comprising:
a brilliant toner including toner particles that include a brilliant pigment and a first binder resin;
a black toner including toner particles that include a second binder resin; and
a color toner, except a black toner, including toner particles that include a third binder resin,
wherein the brilliant toner, the black toner, and the color toner satisfy the following expressions (1) and (2):
Dielectric loss factor of the brilliant toner>Dielectric loss factor of the black toner>Dielectric loss factor of the color toner Expression (1), and
25×10−3≦(Dielectric loss factor of the brilliant toner)−(Dielectric loss factor of the color toner)≦95×10−3 Expression (2).

### Claim 2 (depends on 1)

The electrostatic charge image developing toner set according to claim 1,
wherein the first binder resin includes a first crystalline polyester resin, the second binder resin includes a second crystalline polyester resin, and the third binder resin includes a third crystalline polyester resin, and
a carbon chain length of the first crystalline polyester resin of the brilliant toner is longer than a carbon chain length of the second crystalline polyester resin of the black toner and a carbon chain length of the third crystalline polyester resin of the color toner.

### Claim 3 (depends on 2)

The electrostatic charge image developing toner set according to claim 2,
wherein a difference between the carbon chain length of the first crystalline polyester resin and the carbon chain length of the second crystalline polyester resin is from 1 to 8 and a difference between the carbon chain length of the first crystalline polyester resin and the carbon chain length of the third crystalline polyester resin is from 1 to 8.

### Claim 4 (depends on 2)

The electrostatic charge image developing toner set according to claim 2,
wherein a difference between the carbon chain length of the first crystalline polyester resin and the carbon chain length of the second crystalline polyester resin is from 2 to 6 and a difference between the carbon chain length of the first crystalline polyester resin and the carbon chain length of the third crystalline polyester resin is from 2 to 6.

### Claim 5 (depends on 1)

The electrostatic charge image developing toner set according to claim 1,
wherein when a projected image of each of the toner particles of the brilliant toner is observed, an average distance between a tangent line A of the toner particle and a tangent line B of the brilliant pigment at opposite end portions of the toner particle is 30 nm or more and less than 1,000 nm, the tangent line A being perpendicular to along axis direction of the toner particle, and the tangent line B being parallel to the tangent line A and closest to the tangent line A.

### Claim 6 (depends on 1)

The electrostatic charge image developing toner set according to claim 1,
wherein the first binder resin includes a first crystalline polyester resin, the second binder resin includes a second crystalline polyester resin, and the third binder resin includes a third crystalline polyester resin, and
a content of the first crystalline polyester resin with respect to the toner particles of the brilliant toner is lower than a content of the second crystalline polyester resin with respect to the toner particles of the black toner and a content of the third crystalline polyester resin with respect to the toner particles of the color toner.

### Claim 7 (depends on 6)

The electrostatic charge image developing toner set according to claim 6,
wherein a difference between the content of the first crystalline polyester resin with respect to the toner particles of the brilliant toner and the content of the second crystalline polyester resin with respect to the toner particles of the black toner is from 2 to 10 and a difference between the content of the first crystalline polyester resin with respect to the toner particles of the brilliant toner and the content of the third crystalline polyester resin with respect to the toner particles of the color toner is from 2 to 10.

### Claim 8 (depends on 1)

The electrostatic charge image developing toner set according to claim 1,
wherein the brilliant toner further includes an organic pigment.

### Claim 9 (depends on 1)

An electrostatic charge image developer set comprising:
a first electrostatic charge image developer that includes a carrier and the brilliant toner of the electrostatic charge image developing toner set according to claim 1;
a second electrostatic charge image developer that includes a carrier and the black toner of the electrostatic charge image developing toner set according to claim 1; and
a third electrostatic charge image developer that includes a carrier and the color toner of the electrostatic charge image developing toner set according to claim 1.

### Claim 10 (depends on 1)

A toner cartridge set comprising:
a first toner cartridge that includes a toner container containing the brilliant toner of the electrostatic charge image developing toner set according to claim 1;
a second toner cartridge that includes a toner container containing the black toner of the electrostatic charge image developing toner set according to claim 1; and
a third toner cartridge that includes a toner container containing the color toner of the electrostatic charge image developing toner set according to claim 1,
wherein the toner cartridge set is detachable from an image forming apparatus.