Drum surface aging caused by abnormal printing

[code]A friend in a unit HPLaserJet1320 printer printing anomalies Print out of the handwriting is not only blurred, but also accompanied by white horizontal lines appear, So what should we do when we meet this problem? Let us talk the detail as below.
As the machine is a laser printer, we should check whether it is lack of ink first, so open the printer cover, carefully remove the toner cartridge, and then shake the toner cartridge horizontally, and then the cartridge is installed, after that we should boot print, however the printed is good than before, but horizontal lines still exist. Is the cartridge should be replaced? Upon asked my friends, the machine was purchased in 2006, according to its unit print frequency and print quantity, the printer toner cartridges should be replaced. So I and my friends went to the electronics market to buy a cartridge to solve the problem. However, in order to find out the specific reasons of the aircraft failure, the author asked help online, the cartridge is go back under the guidance of a master. I first bought some chromium oxide, tweezers with medical tweezers dipped in absorbent cotton, and then along the direction of the drum axis, carefully wipe the surface twice evenly. After the reagent is dried, the printer is installed, the fault is disappeared completely, and the printer resumes the previous state.
 
The point of failure of the printer is the surface of the toner cartridge caused by abnormal printing anomalies. With chromium oxide will be removed the photosensitive drum surface layer, exposing the aging surface that is photosensitive, so it can let the printer prints as normally. When we wiping the surface that we must be careful to avoid scratching the drum membrane, film drum worn out the drum scrapped. Cartridge generally consists of aluminum tubes and photosensitive materials, the surface is generally composed of three layers of material, and some special cartridges, the surface will have 4to 5 layers of material. In addition to the first three ordinary cartridge, the fourth and fifth layer designed to protect the photosensitive layer that in order to protect the long drum cartridge life.
However if we still can’t resolve this problem by ourselves that we can choose to purchase the cartridge on the website. Such as if the we need to Brother TN770 that we can choose Brother TN770 this is a international brand to sell printer cartridge.
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