Toner

Pending Publication Date: 2022-02-17
CANON KK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0006]However, in the method of Japanese Patent Application Laid-Open No. 2001-147547, although the adhesion of the external additive to the surface of the toner particle can be improved as compared with the case of adding the external additive having a single particle size, in a case where a larger amount of the external additive is required to enhance the transferability of the toner such as

Problems solved by technology

However, in the method of Japanese Patent Application Laid-Open No. 2001-147547, although the adhesion of the external additive to the surface of the toner particle can be improved as compared with the case of adding the external additive having a single particle size, i

Method used

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Examples

Experimental program
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Example

Example 1

[0234]The following evaluation was performed using a full-color copying machine imagePRESS C800 or a modified machine thereof as an image forming apparatus. The evaluation results are shown in Table 4. The image forming apparatus has a photoreceptor that forms an electrostatic latent image as an image bearing member, and has a developing step in which the electrostatic latent image of the photoreceptor is developed as a toner image by a two-component developer. The image forming apparatus further includes a transfer step of transferring the developed toner image onto an intermediate transfer body and then transferring the toner image of the intermediate transfer body onto a paper, and a fixing step of fixing the toner image on the paper by heat. The developer 1 was charged into a developing device of a cyan station of the image forming apparatus, and the following evaluation was performed.

[0235][Transfer Efficiency after Long-Term Output]

[0236]The transfer efficiency is an ...

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PUM

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Abstract

A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to a toner for developing an electrostatic image used in an electrophotographic method, an electrostatic recording method, or the like.Description of the Related Art[0002]In order to cope with recent high image quality, energy saving, and high-speed printing, it is required to use a toner having a small particle size, low-temperature fixability, and sharp meltability. For example, for energy saving, power consumption in a fixing process is suppressed using a binder resin having a low glass transition point or softening point for the toner. Furthermore, in order to cope with high-speed printing, the toner is quickly melted using a binder resin having sharp meltability for the toner. In addition, in order to cope with high image quality, the toner has a small particle size to suppress a noise on an image and improve micro-image quality.[0003]However, when such a technique is used, toner particles may ...

Claims

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Application Information

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IPC IPC(8): G03G9/097G03G9/087
CPCG03G9/09708G03G9/08755G03G9/09725G03G9/0902G03G9/08797G03G9/0825
Inventor OOYAMA, KAZUNARINISHIMURA, YUUSUGAHARA, NOBUYOSHISANO, HITOSHITAKAHASHI, TORUMURATA, KAZUKITSUJIMOTO, DAISUKEISHIGAMI, KOHKITAMURA, SHINSHIBATA, TAKAHONAKAJIMA, RYO
Owner CANON KK
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