Ink powder special for Kyocera digital printing and copying machine without bottom ash and preparation method thereof

Abstract

The invention provides ink powder special for a Kyocera digital printing and copying machine without bottom ash. The following components in additive amounts based on the weight of the ink powder are added in an external adding process of the ink powder: 0.2 to 1 percent of electropositive silicon dioxide, 0.3 to 0.5 percent of polymetylmethacrylate, and 0.05 to 0.15 percent of titanium dioxide. The invention also provides a method for preparing the ink powder. The ink powder of the invention can control electric charge within a normal developing region, so that the density of images is moderate; the distribution of the electric charge is not too wide; and anti-polarity particles are also removed. The bottom ash phenomena existing in printed documents of the Kyocera digital printing and copying machine can be avoided. In addition, when the external additives are added, the compatibility of the ink powder is also enhanced; and the bottom ash phenomena can be avoided when the compatible ink powder is used. The ink powder special for the Kyocera digital printing and copying machine without the bottom ash can be prepared by uniformly mixing the ink powder and the external addition materials according to the prior art and has high practicability.

Description

technical field [0001] The invention relates to a special toner, more specifically to a special toner for Kyocera digital printing and copier without back ash, and also relates to a preparation method of the special toner for Kyocera digital printing and copier. Background technique [0002] In the modern office field, Kyocera's printers and copiers are widely used. However, for Kyocera printers and copiers that require the toner to achieve a narrow charge distribution under low charge (such as the digital copier Kyocera KM-1620), the back of the print is prone to bottom dust, that is Gray back. Especially when compatible toner is used, the graying phenomenon is more serious. [0003] The generation of back dust is due to the fact that the electrostatic charge on the surface of the drum begins 100 milliseconds after the photosensitive drum is started, and the drum is not charged at the beginning of the 100 milliseconds of rotation. Once the copying starts, the toner rubs ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing Kyocera digital printing and copier toners are easy to produce back dust, and provide a kind of particle charge that can be controlled in the normal development area, and the charge distribution can not be too wide, and then there is no back dust. Toner for Kyocera digital printers and copiers with graying phenomenon

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