| 摘要 |
PURPOSE:To improve the cleaning property of the title toner by constituting the toner of a spherical toner particle having specified mean volume particle size and atomic ratio of a fluorine atom. to a carbon atom. in the surface layer of a toner particle, respectively. CONSTITUTION:The toner is constituted of the spherical toner particle which has the mean volume particle size of 2-20mum and contains the fluorine atom. in the surface layer of the toner particle in the atomic ratio of the fluorine atom. to the carbon atom. of a range of 0.01-1.000. The toner particle is produced by a suspension polymerization method. In this case, when the atomic ratio of the fluorine atom. to the carbon atom. is <=0.01, the sufficient cleaning property of the toner particle is not obtd., while when the ratio is >=1.0, adversely, the effect of the fluorine atom. to the electrostatic charging property of the toner particle becomes large, thereby taking place an undesirable phenomenon in image quality such as a white spot and an image unsharp, etc. Thus, in case that the toner particle is produced by the suspension polymerization, the faulty cleaning property of the toner particle caused by sticking force is improved, and the toner having the good flowability and the less change of the image quality which are the characteristic of the toner particle obtd. by the suspension polymerization is obtd. |
