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Upper fuser roller is also called as fuser roller , which is an important part to be used with fuser film sleeve that cover over it, and there is a piece of printer heating element set in such a roller to generate heat, when the paper pass through the roller, the heat is conducted by the fuser film sleeve to melt and fix the toner particle onto the paper. When the upper fuser roller working, such an action is also assisted by the lower pressure roller that is located under it to press the melted toner particle to attach tightly onto the paper.

When your printer has been used for some time, it's print job will become not as good as new one, you need to clean the toner cartridge and other printer components periodically.   Turn off the power of printer and unplug the power cord for 1 hour, allow to cool down the heat in the printer before cleaning. Open your cover and remove the toner cartridge. Pull the toner cloth gently several times to activate the cloth. Toner cloths are designed to capture loose toner powder in the air. Wipe gently the toner cartridge and head thoroughly with the toner cloth. Many toner cartridges have a protective cover over the print head that also should be cleaned. Remove spilled toner inside and outside of the printer with the toner vacuum, taking care not to touch or break any exposed wires in the printer. Install the toner cartridge back and power the printer on to resume normal use of your printer.

When you notice that the paper comes out from your printer with streaking, jamming, double images, black lines and smudges, do you know what's wrong with your printer? you would probably replace the fuser film sleeve or fuser roller that are worn off and damaged after certain amount of printing pages. Some printers comes with intelligent functions that shows you error codes indicating which part fail to work. In addition to reasons mentioned above, there are some other problems you many need to find out with your fuser assembly , such as the broken gears, bad pressure roller, and heating element and thermistor work abnormally may cause these problems, so you need to detach your machine to do the trouble shooting and fix it.

Fuser roller has one or two heating elements (hologen lamps) inside to generate heat and transfer to the toner to melt and bond on the paper. Fuser film sleeve has a piece of ceramic bar to release heat and transfer via the fuser film sleeve to the toner. Fuser roller features high power consumption, slow preheating, but has long lifespan. Conversely, fuser film sleeve features low power consumption, fast preheating but wear resistance not good as fuser roller.

Fuser unit is the component in a laser printer, copier or laser fax machine, after the image and text is transferred onto the paper, if without fuser unit , the toner particle can not melt and bond on the paper. To do this important process, you can find out there are two steps to make this done, heat and pressure. There are two rollers set in the fuser unit, one is upper fuser roller which is to generate heat to melt the toner, another one is located downside to press and assisit fusing, so it's call lower pressure roller . When the paper with loose toner powder pass through between these two roller, there's a heat element inside the upper fuser roller release heat that transferred via fuser film sleeve to the toner, and the lower roller conduct a pressure to make the fusing much more firm.

Fuser film sleeve for HP P4015 is also compatible with P4014 and P4515 fuser assembly. When it's time to replace your worn fuser film, there're various manufacturers that we select, the fuser assembly is the pricy unit that fuser film sleeve set in it, so it's very important to pick up the right quality film to fit it, additionally the procedures of replacement is also important, the fuser assembly may be damaged if operate improperly. When we get started to do it, lets firstly take out the fuser assembly from your printer, you can see a metal cover plate at the side, use a phillip screw driver to remove the screws on it, also remove the red wire right next to it, and then you can slide the cover plate to the left and take it off. Use a flat blade screw driver to release the clips of a group of driving gears and take them off from the fuser assembly. And then there are two screws nearby the blue clip at the bottom left, so these also need to be released to remove

Printer fuser assembly, as known as fuser kit or fuser unit, it's the component that works with heat and pressure to melt and fix the toner particle onto the paper, such type of part need to repair or replace when your printer has printed out certain amount of pages. In addition to the fuser unit , there are other interchangeable parts that need to replace and are available on the market, such as pickup roller, separation roller, separation pad and transfer roller. Many manufacturers pack a whole set of these parts and sell them together, we usually call them as maintenance kit. Nowadays, maintenance kit is very popular solution for the printer users to maintain their printers, but there are many products by different producers on the market, so sometimes we need to pay particular attention to the quality you get from them, though good quality kit is a little more expensive, but durable and long run can low down your page cost.

On the cost for laser printing, in addition to the paper, laser printer parts and supplies are also the main consumption you need to consider of, such as toner cartridge, drum, fuser assembly, transfer roller etc. all these parts can not last forever as they must wear with use and time. When it's time for replacement, you need to pay much money for original parts and supplies, but just don't worry about that because we have other solutions, the compatible laser printer parts and remanufactured consumable supplies are the best options to go. We sometimes don't need to replace the whole piece of fuser assembly, there are single pieces in this unit and we can change them individually, such as upper fuser roller , lower pressure roller , fuser film sleeve, heating element, driving gear and so on. The ways mentioned above can save your money up to 50-70%, but we have to take the quality in to consideration, as there are a variety of suppliers on the market, inferior qu

Firstly just first show you where is the transfer roller in your HP 4250/4345/4350... , make sure if the power is off and unplug the power cord, lift up the top cover to remove the toner cartridge and than you can see the transfer roller, hung over under the cartridge. at the left side of the roller, use the blue spring hook in your maintenance kit to catch the metal edge near the blue gear and pop the left end out, after lift up the left side of the transfer roller, slide out its right end from the white circle that hold the right end, and than you can take it out of the cabin. After take out the worn transfer roller, get a new one ready, put the right side without blue gear into the white circle, and than left hand side (with a blue hear) has a black stand, position it face down to place into the left side of the base, and than press it down gently until you can hear a snap, so the transfer roller replacing is done, after that, reinstall the toner cartridge back and turn the

Speaking of laser printer parts, there as a pair of fuser roller to work through a combination of heat and pressure to bond the toner powder on the paper, the upper roller, sometimes called upper fuser roller, is covered around by fuser film sleeve which has excellent performance at thermal conduction and wear resistance, the function of fuser film is to transfer heat quickly from the upper fuser roller to the toner and melt it onto the paper sheet, and after bonding the toner, it also can release the heat quickly from the paper. For the original HP design fuser unit, it comes with plastic fuser film sleeve around the upper roller, the problem with the plastic film is that it’s not very durable material and tear within 30,000-50,000 pages of paper. So in these years, we’ve developed maintenance kit with new technologies, which the film surface comes with metallic coated and some material with electromagnetic induction, such type of item can excellent solution to last your

Sometimes you may be able to solve the common problems yourself in your laser printer if you know a little about the structure inside it, such as paper jams due to improper positioning at the transfer roller. Before the printing process at the fuser assembly , the paper has to pass through the transfer roller inside a laser printer that is used for transferring toner from the cartridge drum onto the printing medium. It works with opposing electrical charges to pull the toner particles. Paper jams usually occur at the image transferring process, if the paper get stuck at the transfer roller, just open up the side cover and pull out the paper gently, don't touch roller surface without gloves when hold the ends of the roller, as the sweat and oil of your hand can pollute and damage the surface material.

Fuser assembly has a piece of upper fuser roller over the top side for generating heat, and a piece lower pressure roller to assist the upper roller to perform the final printing process which is to fuse and bond the toner onto the fiber of paper, that is to say, to fix the texts and graphics on the paper. In addition to the pair of rollers mentioned above, fuser assembly also has other parts in it to complete the fusing process, such as fuser film , heating element, fuser thermistor and driving gears, so you sometimes only need to purchase the single part and replace it to fix the problem.