ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER

Abstract

Provided is an electrostatic charge image developing toner usable for downsized color image forming apparatus capable of rapid print preparation with neither an influence on production cost nor use of a specific material as the toner constituent material. Also disclosed is an electrostatic charge image developing toner possessing at least a resin and a colorant, wherein the electrostatic charge image developing toner contains 12-984 ppm of a polyvalent organic acid or a salt thereof.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like elements numbered alike in several figures, in which:

FIG. 1 is a schematic cross-sectional view of an example of developing device for non-magnetic single component toner development, and

FIG. 2 is a schematic cross-sectional view of an example of full color image forming apparatus for forming an image by using toner of the present invention.

Claims

1. An electrostatic charge image developing toner comprising a resin and a colorant, wherein the electrostatic charge image developing toner contains 12-984 ppm of a polyvalent organic acid or a salt thereof.

2. The electrostatic charge image developing toner of claim 1, wherein the polyvalent organic acid is a polycarboxylic acid.

3. The electrostatic charge image developing toner of claim 1, wherein the polyvalent organic acid is an oxo acid.

4. The electrostatic charge image developing toner of claim 2, wherein the polyvalent organic acid is an oxo acid.

5. The electrostatic charge image developing toner of claim 1, wherein the polyvalent organic acid is an amino acid.

6. The electrostatic charge image developing toner of claim 2, wherein the polyvalent organic acid is an amino acid.

7. The electrostatic charge image developing toner of claim 2, wherein the polycarboxylic acid has at least two carboxyl groups and at most 12 carbon atoms in a molecule.

8. The electrostatic charge image developing toner of claim 1, wherein the electrostatic charge image developing toner contains 4-90 ppm of a sodium element and 600-1650 ppm of a divalent or trivalent metal element.

9. The electrostatic charge image developing toner of claim 1, wherein the resin comprises a vinyl polymer.

10. The electrostatic charge image developing toner of claim 1, wherein molecular weight of the polyvalent organic acid or a salt thereof is 47-1500.

11. A non-magnetic single component toner comprising the electrostatic charge image developing toner of claim 1.