The toner cartridge is the most important and most used type of laser printer. When the toner cartridge is in use, the most easily lost toner is toner, followed by a photoconductor drum, a scraper, and the like. For a toner cartridge, if the toner cartridge is discarded due to the consumption of toner, repurchasing a new toner cartridge is wasteful and can cause pollution. A toner cartridge generally costs between 400 yuan (A4 size) and 1,500 yuan (A3 size) or even higher. If you have a certain understanding of the structure and working principle of the toner cartridge, you can know that the toner cartridge can be reused by filling the powder, and the cost of this calculation is much cheaper than buying a new toner cartridge. For example, the price of a bottle of toner is generally only 1/10 to 1/5 of the entire toner cartridge, and a toner cartridge can generally fill 3 to 5 times of toner, and this also protects the environment.

The media has been introduced for the addition of laser printer toner. But most people's operation is not very ideal, for example, most users drill a hole in the toner cartridge, then pour the toner into it, and then seal the hole. This may be just an emergency method for people who are generally not very good at using laser printers. This will cause the plastic debris in the drilling to enter the toner bin. The volume of this debris is much larger than the volume of the toner particles, which can easily lead to the scrapping of the photoconductor drum.

Through several years of work practice, the author has studied in detail the structure of a dozen HP toner cartridges. After actual exploration, I summarized some HP toner cartridge filling methods for peer reference.

1.C4092A and other five kinds of toner cartridges

The photoconductor drum of the C4092A toner cartridge and the toner cartridge are fixed by two metal positioning pins. Both positioning pins are buried inside, which is difficult to obtain. Some articles say that it is possible to use the same size nails and carefully knock the nails inside, which is actually impossible. Because there is another layer of plastic baffle under the locating pin, the locating pin can't be knocked down. In the practice, the author explored a method, that is, using an electric iron on the side of the positioning pin, and squeezing the two pins along the positioning pin (not too deep, otherwise it is easy to damage the two ears of the light guide drum, the ear one Broken, the entire cartridge is scrapped). Use two clock drivers to hold the positioning pin from both sides, squeeze it up one by one, and after the positioning pin is exposed, pull it out with needle-nose pliers, then insert the flat head screwdriver into the photoconductor drum and the toner cartridge. The photoconductor drum can be separated from the toner cartridge with a slight glance. Open the cover by unscrewing the screw on one end of the toner cartridge and unscrewing it. Note that it is best not to remove the cover, otherwise the position of the magnetic roller connected to it will change, resulting in powder leakage after filling.

Then, press the cover plate to turn 90 degrees or more, you can see a plastic cover exposed, pry it open, you can see the toner cartridge, find a funnel to insert, remove the quality compatible toner corresponding to the toner cartridge model, then slowly pour the toner into the toner hopper. Since the toner particles are extremely small, they can't be shaken when the powder is filled, and they can't be filled too fast, otherwise, the toner will fly. (Editor: Wear a mask when filling the powder to prevent the inhalation of toner from harming health). Be careful not to overfill the toner, cover the plastic cover of the toner cartridge, then reset the cover, screw on the screw, shake the toner cartridge from side to side in the axial direction, and rotate the magnetic roller clockwise by hand (the outer side of the rotatable magnetic roller The gear) makes the toner on the magnetic roller evenly distributed. If it is not uniform, rotate the magnetic roller counterclockwise to make it carry the magnetic iron powder carrier, then consciously turn the iron powder from a lot of places to a small place, then rotate the magnetic roller clockwise to transfer the iron powder into the toner cartridge. Then combine the photoconductor drum with the toner cartridge and knock in the positioning pin. The toner cartridge is installed.

The filling method of the C3977A, C7115A, C3906F, and C3900A toner cartridges is the same as that of the C4092A toner cartridge.
2.C3903F toner cartridge

When I started to fill the toner on the C3903F toner cartridge, I wanted to expose the toner cartridge, but I immediately found that the plastic cover of the toner cartridge was visible, but it was blocked by a plastic stopper, and this plastic shield was blocked. It is integrated with the surface of the drum. No screw is found. It is a truly integrated toner cartridge, which is completely different from the C4092A toner cartridge. After careful observation, the author found six clips, four in the middle equidistant distance, one on each end, and the clips were opened one by one with a clock screwdriver, and then inserted into the flathead with a flat screwdriver, the whole toner cartridge was divided into two. Half, the remaining toner inside sprinkled on the ground. After cleaning the photoconductor drum and the toner cartridge, the author pours the new toner into the toner cartridge, combines the photoconductor drum and the toner cartridge, and re-clamps it with the clip. Although the toner cartridge thus filled can still be used, the powder leakage phenomenon occurs due to the destruction of the seal of the original toner cartridge. How can we solve this problem? After repeated research, the author decided to start with the plastic blank and use needle-nosed pliers to pry off the plastic cover so that the plastic cover of the toner cartridge is exposed. Destroyed the plastic blank, can the toner cartridge not be used? I put the toner cartridge back into the printer and found that it can still be used. This shows that this plastic blank is just an obstacle for HP to prevent users from filling powder. Whether or not there is no effect on the normal use of the toner cartridge. Therefore, I found that the filling of the C3903F toner cartridge is the simplest. As long as the plastic blank outside the toner cartridge is destructively removed, the toner cartridge can be exposed, the plastic cover of the toner cartridge can be removed, and the funnel can be inserted. , you can fill the powder. After filling, cover the plastic cover, and when you refill it, open the plastic cover directly.

3.C4129X toner cartridge

The C4129X toner cartridge is also fixed between the photoconductor drum and the toner cartridge by two metal positioning pins. Next, to the positioning pin, use the electric iron to smear the two grooves next to the positioning pin. Use two clocks to drive the two sides. Hold the locating pin upwards and squeeze the locating pin. Then, insert a flat screwdriver between the photoconductor drum and the toner cartridge to separate the photoconductor drum from the toner cartridge. There are two screws on the gearless end of the toner cartridge. Unscrew it to remove a small cover. This cover is used to fix the magnetic roller so that the magnetic roller can be removed and the entire toner cartridge is removed. It’s all exposed. Pour the toner evenly into the toner cartridge and put it back on the magnetic roller. Note that there are two small plastic sleeves on both ends of the magnetic roller. Don't lose it. Cover the small cover, screw on the screw, and then attach the photoconductor drum to the toner. Put the box together, knock in the locating pin, and the toner cartridge is installed.

4.92298A toner cartridge

The photoconductor drum of the 92298A toner cartridge is connected to the toner cartridge by two plastic clips with springs. There are two screws on the plastic clip. Unscrew the screws, remove the plastic clips, and use a flat screwdriver to slap the photoconductor drum. Separate from the toner cartridge, the following steps are similar to the filling of the C4129X toner cartridge.

5.92274A toner cartridge

This toner cartridge is extremely simple to fill. On the side of the 92274A toner cartridge, you can see the plastic cover of the toner cartridge, remove the movable baffle on the photoconductor drum, use the needle-nosed pliers to pull out the plastic cover, insert the funnel, and directly fill the powder.

6. The second filling

If it is the second filling, consider dumping the waste powder in the waste toner collection bin to clean the surrounding toner and paper scraps. Care should be taken to remove the photoconductor drum first when removing waste toner. Generally speaking, the screws on both ends of the photoconductor drum are first removed, and the plastic (or metal) pins are pulled out. Because the latches on the two ends are different, it should be remembered when loading. Then carefully remove the photoconductor drum, do not place the photoconductor drum in strong light, and be careful not to let it touch other hard objects to avoid being damaged by scratches.

Then pour out the waste toner, wipe the area around the waste toner box with soft things such as cotton, and carefully install the photoconductor drum and the toner cartridge. Do not make mistakes in the position of each screw, drum, or pin during installation to avoid damage to the toner cartridge. After installing it, you can try to print a few sheets, and the whole work is completed.