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Colorful laser printer and printing method

A laser printer, color technology, used in printing, optics, instruments, etc., can solve the problems of color registration errors and high requirements

Inactive Publication Date: 2008-12-10
LITE ON OPTO TECH (CHANGZHOU) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: four exposures, need to wait four times the time of black and white printing; high requirements for alignment design during paper transmission, otherwise it will cause color registration errors

Method used

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  • Colorful laser printer and printing method
  • Colorful laser printer and printing method
  • Colorful laser printer and printing method

Examples

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Embodiment Construction

[0022] The basic structure and working principle of the color laser printer 100 provided by a preferred mode of the present invention will be described below with reference to figures.

[0023] see Figure 4 , a structural schematic diagram of the printer 100 of the preferred embodiment, the printer 100 includes a photosensitive drum 110, a charging unit 120, an exposure module 130, a developing module 140, a transfer roller 150, and a scraper 160 for removing residual toner particles.

[0024] Wherein the exposure module 130 includes a laser light source and a light source power control circuit, please refer to Figure 5 , the laser light source includes four laser diodes 131 combined in parallel, the ratio of the maximum output power of the four laser diodes 131 is P4:P3:P2:P1 is 192:48:12:4, wherein LD1 is controlled to provide four levels Power: 1 / 4P1, 2 / 4P1, 3 / 4P1 and P1, the LD2, LD3 and LD4 are controlled to provide three levels of power: 1 / 3P2, 2 / 3P2 and P2; 1 / 3P3, 2 / ...

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PUM

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Abstract

The invention relates to a laser color printer, which comprises a sensitometric drum, an exposure module group and a development module group; wherein, the exposure module group comprises a laser source and a source power control circuit, and provides beams with energy amplitude grades; the development module group comprises four graphite powder boxes, each of which is provided with carbon powders with one color; a given number of charges are carried by the carbon powder particles of each color, and the given numbers of the charges have different given amplitude grades with the variation of color. Through the energy grading on the laser diode source of the exposure module group, the laser color printer can form a latent image with color signals during exposure in one time; meanwhile, because of the difference of the charge grade carried by the four-color carbon powders separately, the printer can complete the development of the colorful latent image in one time. Therefore, the printing of the colorful pictures can be easily completed only by one exposure and one development; not only the printing speed is improved, but also the chromatography errors is reduced, and the resolution is high.

Description

technical field [0001] The invention relates to a laser printer, in particular to a color laser printer and a printing method thereof. Background technique [0002] A structural principle commonly used in the middle and low-end color laser printers currently on the market, such as figure 1 As shown, the printer 10 uses four photosensitive drums 11 and four exposure units (LSU) 12 at the same time. The printing paper passes through the four photosensitive drums 11 sequentially, and four transfer rollers are needed to transfer the toner to the paper. This structure uses four photosensitive drums 12 and four exposure modules (LSU) 11, which makes the whole machine bulky and expensive; and four exposures require waiting four times longer than black and white printing. [0003] Another structural principle commonly used in middle and low-end color laser printers, such as figure 2 As shown, the printer 20 adopts the toner conveyor belt device 21 to sequentially transfer the fo...

Claims

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Application Information

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IPC IPC(8): G03G15/01G03G13/01B41J2/47
Inventor 霍哲蔡毅韩涛戚志恩
Owner LITE ON OPTO TECH (CHANGZHOU) CO LTD
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