Method for repairing covering film on surface of selenium drum powder-outlet knife

A powder knife and coating technology, which is applied to the electrical recording process using the charge pattern, the equipment of the electric recording process using the charge pattern, and the electrography, etc., can solve the problem of increased carbon powder accumulation, waste of resources, and loss of printing function and other issues, to achieve the effect of saving social resources, prolonging service life and high economic value

Inactive Publication Date: 2017-05-10
陈卫权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes the accumulation of toner to increase continuously, resulting in printing vertical bars until the printing function is completely lost
Therefore, although a thin layer of lamination has a huge impact on the printing quality
[0005] However, there is no good way to effectively repair the film so that the powder knife can be further used. Because of the problem of the film, the entire powder knife cannot be used, and the waste of resources cannot be effectively avoided.
In order to continue to use the powder knife, the damaged film on the surface of the powder knife can only be ground off now, but this kind of powder knife that removes the surface film can only be printed about a few hundred times, more than 400 to 500 times After that, the quality of the printed ones drops sharply and has no practical value.

Method used

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  • Method for repairing covering film on surface of selenium drum powder-outlet knife
  • Method for repairing covering film on surface of selenium drum powder-outlet knife
  • Method for repairing covering film on surface of selenium drum powder-outlet knife

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Image printing is carried out by using recycled powder knives, and the printing results obtained are as follows image 3 shown. Then remove the powder knife, and perform thermal repair on the powder knife. The repair steps include:

[0041] 1. Clean the surface of the discarded powder knives, and then check the surface shape of the powder knives under a 40X microscope to see if there is any damage. It was found that there was no damage on the surface of the powder knife. Under a 50X microscope, it was checked whether there were wrinkles on the surface of the powder knife. It was found that the polyurethane film on the surface of the powder knife had been damaged and could not be applied to the laser printer toner cartridge again and needed to be repaired.

[0042]2. Clean the surface of the powder knife that needs to be repaired, and then heat the surface of the powder knife instantly and then cool it down. The heating temperature described in the technical solution i...

Embodiment 2

[0049] Image printing is carried out by using recycled powder knives, and the printing results obtained are as follows Figure 5 shown. Then remove the powder knife, and perform thermal repair on the powder knife. The repair steps include:

[0050] First, clean the surface of the powder outlet knife that needs to be repaired, and then heat the surface of the powder outlet knife instantaneously and then cool it down. The heating temperature described in the technical solution is 500° C., and the heating time is 0.1 second. Under the high temperature state, the polyurethane film softens, and the polyurethane film is stretched under the action of surface tension, so that the polyurethane film becomes a taut and smooth state. After the instant heating stops, the heat of the polyurethane film is quickly transferred to the metal blade, so that the temperature of the polyurethane film decreases rapidly, the smooth state of the surface of the polyurethane film is fixed, and the poly...

Embodiment 3

[0054] Image printing is carried out by using recycled powder knives, and the printing results obtained are as follows Figure 7 shown. Then remove the powder knife, and perform thermal repair on the powder knife. The repair steps include:

[0055] First, clean the surface of the discarded powder knives, and then detect the surface shape of the powder knives under a high-power microscope to see if there is any damage. If it is found that there is no damage on the surface of the powder knife, but there are wrinkles on the surface of the powder knife, the polyurethane film on the surface of the powder knife has been damaged, and it cannot be applied to the laser printer toner cartridge again, and needs to be repaired. Then clean the surface of the powder outlet knife that needs to be repaired, and then cool the surface of the powder outlet knife after being heated instantaneously. The heating temperature described in the technical solution is 100° C., and the heating time is 5...

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Abstract

The invention relates to a repairing method for printer accessories, belongs to the re-manufacturing filed of the printer accessories, and discloses a method for repairing a covering film on the surface of a selenium drum powder-outlet knife; the method is characterized in that the powder-outlet knife in a laser printer selenium drum is heated at a temperature of 100-500 DEG C for 0.01-5s; after heating, the powder-outlet knife is placed in a standing state at a room temperature for 0.1-5h to remove stress; and next, the covering film on the surface of the powder-outlet knife is coated with liquid polishing wax and n-heptane. By virtue of the method, the wrinkles of the covering film on the surface of the powder-outlet knife can be repaired effectively, so that the covering film on the surface of the powder-outlet knife can be leveled after heating under the effect of surface tension; and circulation and re-manufacturing of the powder-outlet knife can be realized, and social resources can be reduced.

Description

technical field [0001] The invention relates to a method for repairing printer accessories, in particular to a method for repairing the coating film on the surface of a toner drum output powder knife. Background technique [0002] Laser printers are currently one of the most widely used external computer output devices. It uses the distribution of charges to transfer toner according to the shape of the font, and then outputs text or images. The entire laser printing imaging process can be divided into seven steps: charging, exposure, development, transfer, fixing, cleaning, and power elimination. During the developing process, there is a gap of certain thickness between the powder knife and the developing roller, and the carbon powder is evenly distributed on the developing roller through the gap. In order to realize the above functions and ensure the uniform thickness of the toner, the powder knife needs to provide a certain degree of elasticity during the printing process...

Claims

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Application Information

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IPC IPC(8): G03G15/08
CPCG03G15/0812
Inventor 陈卫权
Owner 陈卫权
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