Preparation method of dry-type nonmagnetic single-component positive electricity carbon powder for laser printer

Abstract

The invention relates to a preparation method of dry-type nonmagnetic single-component positive electricity carbon powder for a laser printer, which is implemented according to the following technical proposal: the raw material for the semi-finished product in the dry-type nonmagnetic single-component positive electricity carbon powder for the laser printer contains the following components in parts by weight: 100 parts of adhesive resin, 1 to 20 parts of coloring agent, 0.1 to 15 parts of demolding agent and 0.1 to 10 parts of charge control agent; and the preparation method comprises the steps of uniformly mixing the adhesive resin, the coloring agent, the demolding agent and the charge control agent in a high-speed mixer in proportion, melting and mixing by using an extruder, inputting into a ball mill for roughly crushing after extruding and performing through the extruder, further crushing and grading through a jet mill to obtain the semi-finished product, and adding an external additive in the semi-finished product to prepare the product in the invention. The product in the invention has the advantages that excellent image quality can still be maintained even in a low temperature and moisture environment and a high temperature and moisture environment, the printed images have high durability and low cost, and the product is suitable for a plurality of positive electricity laser printers.

Description

technical field [0001] The invention relates to positively charged carbon powder for laser printers, in particular to a preparation method of dry non-magnetic single-component positively charged carbon powder for laser printers. Background technique [0002] At present, the common disadvantages of positively charged toner for laser printers in the domestic market are poor durability, ghosting, bottom dust, and reduced uniformity of the full black plate in long-term printing. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcoming that above-mentioned laser printer uses electropositive carbon powder to exist, provide a kind of preparation method of dry type non-magnetic one-component electropositive carbon powder for laser printer, make the product of the present invention can be used at low temperature It maintains excellent image quality in low humidity and high temperature and high humidity environments, and the printed imag...

AI Technical Summary

Problems solved by technology

[0002] At present, the common disadvantages of positively charged toner used in laser printers in the domestic market are poor durability, ghosting, bottom dust, and uniformity of the full black plate after long-term printing.