Transparent electrostatic charge image developing toner and method of manufacturing the same, electrostatic charge image developer, toner cartridge, image forming method, and image forming apparatus

1. A transparent electrostatic charge image developing toner comprising:

a binder resin;

0.2% by weight to 7.0% by weight of europium;

0.02% by weight to 0.7% by weight of bismuth; and

an element selected from tin and titanium,

wherein

the europium and bismuth are contained a complex selected from the group consisting of a YVO 4 :Eu,Bi complex, a Y 2 O 3 :Eu,Bi complex, and a Y 2 OS:Eu,Bi complex, and

the transparent electrostatic charge image developing toner satisfies the following formula:

3 ≦A/C:≦ 20

where:

A is a content (% by weight) of the europium in the toner that is measured by X-ray fluorescence analysis, and

C is a content (% by weight) of the element selected from tin and titanium in a toner cross-section that is measured by transmission electron microscope enemy dispersive X-ray analysis.

2. The transparent electrostatic charge image developing toner according to claim 1 , wherein the transparent electrostatic charge image developing toner has ultraviolet absorptivity.

3. The transparent electrostatic charge image developing toner according to claim 1 , wherein the transparent electrostatic charge image developing toner satisfies the following formula:

3 ≦A/B≦ 20

wherein B is a content (% by weight) of the bismuth in the toner that is measured by X-ray fluorescence analysis.

4. The transparent electrostatic charge image developing toner according to claim 1 , wherein a volume average particle diameter Dv of the transparent electrostatic charge image developing toner is from 4 μm to 10 μm.

5. The transparent electrostatic charge image developing toner according to claim 1 , wherein the toner further comprises an external additive having a number average primary particle diameter in the range of 18 nm or less or 25 nm or greater.

6. The transparent electrostatic charge image developing toner according to claim 1 , wherein the binder resin contains a polyester resin.

7. A method of manufacturing the transparent electrostatic charge image developing toner according to claim 1 , the method comprising:

kneading a toner forming material that contains a binder resin and a compound containing europium and bismuth;

cooling the kneaded material formed by the kneading;

pulverizing the kneaded material cooled by the cooling; and

classifying the kneaded material pulverized by the pulverizing.

8. An electrostatic charge image developer comprising the transparent electrostatic charge image developing toner according to claim 1 .

9. A toner cartridge comprising:

a toner accommodation chamber,

wherein the toner accommodation chamber contains the transparent electrostatic charge image developing toner according to claim 1 .

10. An image forming apparatus comprising:

an image holding member;

a charging unit that charges a surface of the image holding member;

an exposure unit that exposes the charged image holding member to form an electrostatic latent image on the surface of the image holding member;

a developing unit that develops the electrostatic latent image with a developer including a toner to form a toner image;

a transfer unit that transfers the toner image onto a surface of a transfer member from the image holding member; and

a fixing unit that fixes the toner image transferred onto the surface of the transfer member,

wherein the toner is the transparent electrostatic charge image developing toner according to claim 1 .

11. An image forming method comprising:

charging a surface of an image holding member;

forming an electrostatic latent image on the surface of the image holding member;

developing the electrostatic latent image formed on the surface of the image holding member with a developer including a toner to form a toner image;

transferring the toner image onto a surface of a transfer member; and

fixing the toner image transferred onto the surface of the transfer member,

wherein the toner is the transparent electrostatic charge image developing toner according to claim 1 .