Aqueous paint composition, conductive elastomer roller, method for producing the same, process cartridge using the same, and image forming apparatus

Abstract

The present invention provides an aqueous paint composition, a conductive elastomer roller, a method for producing the same, a process cartridge using the same, and an image forming apparatus. Wherein the water-based coating composition includes the following components by weight: water-based film-forming material, curing agent, conductive filler, auxiliary agent and water, wherein: the water-based film-forming material is the first water-based resin and the second water-based resin by weight ratio greater than 1:1 mixing; the first water-based resin is selected from water-based polyurethane resin and / or modified products of water-based polyurethane resin; the second water-based resin is selected from at least one of the following types of water-based resin: water-based fluororesin, water-based acrylic resin, water-based Epoxy resins, and modified products of these types of waterborne resins. When the water-based coating composition is used for conductive elastomer rollers, it has good adhesion and excellent wear resistance, and can be adapted to working environments of high temperature and high humidity and low temperature and low humidity.

Description

technical field [0001] The invention relates to a water-based coating composition, a conductive elastic body roller and a manufacturing method thereof, a process box using the same and an image forming device, and belongs to the technical field of image forming. Background technique [0002] In various image forming devices such as laser printers and copiers, various conductive elastomer rollers are widely used as charged components to participate in the imaging of the developer. An important part that carries the developer in the developing cartridge to its surface and charges the developer, and then delivers the developer with a predetermined amount of electricity to the surface of the photosensitive member. As another example, the charging roller used in the developing cartridge charges the photosensitive member opposite to it, so that the surface of the photosensitive member has a uniform amount of electricity, and the irradiation of the laser beam causes an electrostati...

AI Technical Summary

Problems solved by technology

Traditional resin coatings usually use organic solvents to dissolve and mix various components, and during the construction of the surface layer, VOC emitted from organic solvents is an important pollutant in modern society, which can cause serious pollution to the environment and human body and hurt

[0004] In order to solve the above-mentioned pollution problem, the technology of applying water-based paint to the surface layer and / or the middle layer has been developed in recent years, but the surface layer formed by the water-based paint has poor adhesion and wear resistance on the outer periphery of the elastic layer of the conductive elastomer roll. performance and image quality and image uniformity when finally used in image forming devices, etc., all put forward stricter requirements on the performance of water-based coatings; in addition, the components in water-based coatings often cannot maintain a uniform dispersion state, Especially in mass production, precipitation and delamination will occur, which is not only unfavorable for the construction of the surface layer, but also leads to uneven resistance distribution on the surface of the coating, which affects the performance of the conductive elastomer roller, which requires Continuously introduce more perfect water-based paint formulation system

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