Color laser printing method and its device

Abstract

The present invention relates to a colorful laser print method and a device thereof. A group of laser scanning units (LSU) are used for emitting single or multiple light beams, a reflector is disposed on the path irradiated by the light beam, the reflector can be driven by a motor controller to form different reflect angles, and the reflector can be set with corresponding reflect angles based on the arrange position of light sensing drums. When the motor controller and the laser scanning units are simultaneously receiving signals and acting at the same time, the reflect angle position of the reflector can be controlled by time difference of the light irradiation, then the group of the laser scanning units can exposure the light sensing drums at different positions, so the using number of the laser scanning units can be reduced in order to reduce the whole volume of the laser printer and make small type design, and further the cost of manufacture and vendition unit price can be reduced.

Description

technical field [0001] The present invention relates to a method and device for color laser printing, in particular, only a single laser scanning unit (LSU) can be used to directly expose photosensitive drums at different positions, so as to achieve the effect of color printing, thereby reducing the number of laser scanning units reduce the number of laser printers used, reduce the overall manufacturing cost and sales unit price. Background technique [0002] The most important component in a laser printer is the photosensitive drum (that is, the organic image conduction mechanism; OPC for short). The entire printing process is centered on the photosensitive drum, and it operates repeatedly. The entire process of the laser printer can be said to be charging, exposing , developing, transferring, fixing, clearing, and removing the image as an action cycle; in detail, when the user issues a print command in the application, the prelude of the entire laser printing process begin...

AI Technical Summary

Problems solved by technology

[0004] Therefore, some related companies have developed the "one-time imaging" printing technology of color laser printers. In the machine, the toner cartridges of four colors no longer share a single laser scanning unit (LSU) and a photosensitive drum, but use four One set of laser scanning unit (LSU) and four photosensitive drums (OPC) respectively correspond to four toner cartridges, so that four sets of laser scanning units can simultaneously expose four photosensitive drums, and four photosensitive drums can also be exposed at the same time Adsorb the toner from the corresponding toner cartridges, and make the paper pass through the Y, M, C, B four-color toner cartridges at one time to complete color printing. Although this method can increase the printing speed, the current color laser printer is designed to meet More user-friendly operation and convenience of positioning, its appearance is constantly developing in the direction of small size and light weight, and its internal parts must also be designed to be precise and miniaturized. If four sets of laser scanning units (LSU) are stacked at one time When installed in a color laser printer, the four sets of laser scanning units (LSUs) will inevitably occupy a certain amount of space in the color laser printer. In this way, the volume of the color laser printer cannot be miniaturized, and the overall external structure will appear cumbersome and bulky , relatively, the manufacturing cost of the four laser scanning units (LSU) will be reflected in the unit price of the color laser printer, and when assembled, its complicated assembly process and time will increase the overall assembly cost

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