Method for recovering and regenerating abandoned carbon dust of laser printer and laser duplicator

A technology of laser printers and copiers, applied in the fields of optics, electrical recording, instruments, etc., can solve the problems of cumbersome recycling process, high recycling cost, complicated process, etc., and achieve simplified process steps, strong recycling pertinence, and good recycling effect Effect

Inactive Publication Date: 2011-06-22
ZHUHAI YIFAN DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If waste toner is mixed with finished toner in an amount of 25-85% according to this patent, the final product obtained will not meet the requirements of normal printing at all
In addition, this patent does not involve the drying treatment of carbon powder, and the recovered carbon powder often has the problem of moisture. If the method described in this patent is used for regeneration without drying treatment, the expected effect will often not be achieved
In addition, this patent also removes the small particle carbon powder by the method of classification, but it still has not been fully utilized.
Furthermore, because waste toner needs to be mixed with finished toner in proportion, once the product is unqualified, not only does the waste toner not be utilized, but the normally usable toner becomes unusable. , economically uneconomical
[0007] To sum up, the existing carbon powder recovery technology has technical defects such as complex process, cumbersome recovery process, high recovery cost and poor recovery effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]The remaining toner of HP2600 is sorted and recycled according to the four colors of red, yellow, blue and black. Because the recycling process is strictly controlled, the remaining toner does not need to be sorted. After testing, its water content also meets the requirements, so the red toner is taken directly. 1 kilogram, according to weight percentage, the addition amount of described surface modification additive is 0.12%, wherein adds the silicon dioxide 8.0g of small particle size, adds the silicon dioxide 4.0g of large particle size, high and low speed in the high-speed mixer Mix alternately for about 6 minutes. The obtained carbon powder is then sieved using a 200-mesh vibrating sieve. The toner powder before treatment has a low density, and there is serious powder leakage, so it cannot be used normally at all. After processing, all printing indicators are qualified. The following is the specific test data:

[0027] Powder Addition Average Color Density Average...

Embodiment 2

[0030] The recycled toner of HP series will only be recycled according to the four colors of red, yellow, blue and black, but the proportion of each type of toner is not clear. Compared with the physical and chemical parameters of the powder, it is confirmed that it is relatively close to the physical and chemical parameters of Samsung CLP300 toner. Take a total of kilograms of red sample powder, first use a 200-mesh ultrasonic vibrating sieve to carry out the aforementioned sorting steps, then carry out vacuum drying, and then according to the difference between its various physical and chemical parameters and the sample Samsung CLP300 toner, and the characteristics of the Samsung CLP300 printer itself, And the printing quality of the recovered carbon powder when it is actually printed, according to the percentage by weight, in this example, the addition of the surface modification additive is 0.15%, wherein 5.0g of silicon dioxide with a small particle size is added, and 5.0g...

Embodiment 3

[0034] 1 kg of the red recovered carbon powder described in Example 2 was first tested for various physical and chemical parameters, and then sieved with a 200-mesh ultrasonic vibrating sieve. According to its physical and chemical parameters, and its difference with the original HP4600 carbon powder, add 10.0g of silicon dioxide with a small particle size, and 8.0g of silicon dioxide with a large particle size, and mix them in a high-speed mixer at high and low speeds for about 6 minutes. The obtained carbon powder is then sieved using a 200-mesh vibrating sieve. The toner before treatment has a high background gray on the HP4600 printer, low color density, and serious flying powder phenomenon, which cannot be used normally at all. After processing, all printing indicators are qualified. The following is the specific test data:

[0035] Powder Addition Average Color Density Average Base Gray Page Yield (5% Coverage)

[0036] 178.7g 1.22 0.006 8219

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PUM

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Abstract

The invention discloses a method for recovering and regenerating abandoned carbon dust of a laser printer and a laser duplicator and aims to the method for recovering and regenerating the abandoned carbon dust of the laser printer and the laser duplicator, which is simple, is low in recovery cost and good in recovery effect. The method comprises the following steps of: recovering and gathering, namely recovering and gathering the abandoned carbon dust of the laser printer and / or the laser duplicator; drying, namely drying the recovered abandoned carbon dust; performing surface modification, namely performing surface modification on the recovered abandoned carbon dust by using a high-speed mixer; and screening, namely screening the semi-finished product carbon dust generated in the step of the surface modification so as to remove blocks generated by mixing. The method can be widely applied to the recovery field of the carbon dust of the laser printer and the laser duplicator.

Description

technical field [0001] The invention relates to a recycling method for waste carbon powder of laser printers and copiers. Background technique [0002] Toner is the developer material of laser printers and copiers, and the particles are mostly below 10 microns, and are generally stored in replaceable toner cartridges. In addition to a small amount of waste toner produced during the printing process, after the toner cartridge has completed its service life, there will still be some residual toner remaining in the toner storage container of the toner cartridge. Especially after each printer manufacturer invented the counting chip, the residual amount of remaining toner became larger, and some even approached 50%. This has just caused huge waste, and caused great pollution to the environment. In order to solve this problem, there are already some patents related to the regeneration of these waste carbon powders. [0003] Patent No. 01127963.X "Copier Waste Toner Treatment Pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/00G03G9/08
Inventor 胡新建
Owner ZHUHAI YIFAN DIGITAL TECH
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