Toner and image forming apparatus

Abstract

Disclosed is a toner used for an image forming apparatus, comprising an organic photoreceptor as a latent image supporting material and a cleaning blade for removing a residual toner on the organic photoreceptor after a transfer process, wherein the friction coefficient between the organic photoreceptor and the toner is from 0.30 to 0.65, the toner contains at least one kind of inorganic fine particles on the surface, and one of the inorganic fine particles is made of silica.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic view showing an example of an apparatus used for measurement of a friction coefficient according to the present invention.

Claims

1. A toner used for an image forming apparatus, comprising an organic photoreceptor as a latent image supporting material and a cleaning blade for removing a residual toner on the organic photoreceptor after a transfer process, wherein a friction coefficient between the organic photoreceptor and the toner is from 0.30 to 0.65.

2. The toner according to claim 1, wherein at least one kind of inorganic fine particles are contained on the toner surface, and one kind of the inorganic fine particles is silica.

3. The toner according to claim 2, wherein the silica is treated with a cyclic silazane.

4. The toner according to claim 2, wherein the silica comprises aggregated particles, whose the average aggregate size is from 30 to 200 nm and the standard deviation of the particle size distribution is 65 nm or less.

5. The toner according to claim 2, wherein the friction coefficient between the silica and the organic photoreceptor is from 0.40 to 0.75.

6. The toner according to claim 2, wherein the amount of the silica added is from 0.5 to 2.5% by mass based on that of the toner.

7. The toner according to claim 1, wherein the toner is a magnetic one-component developer.

8. An image forming apparatus comprising an organic photoreceptor as a latent image supporting material and a cleaning blade for removing a residual toner on the organic photoreceptor after a transfer process, wherein the toner according to claim 1 is used.