Toner Refill

What is A Transfer Kit?

Transfer unit

What is A Transfer Kit? 

The transfer unit is part of the laser printer mechanism wherein the image is impressed on the paper before the fusing process. It is found beyond the photosensitive drum and before the fuser assembly. Like most part of the printer, the transferring process also involves passing through the different parts of the unit. After the developing of image on the photosensitive the drum, the paper then passes through two rollers (upper and lower). The lower roller is charged with electrostatic attracting the toner to stick to the paper from behind to form the image. The rollers finally imprints the image on the paper while at the same time clean up excess or loose toner and deposits it in the toner waste hopper.

More tips and tricks to printer maintenance and how you can save on printing supplies from the Printer Encyclopedia.

Transfer kit vs Maintenance kit

There is very much a big difference between the transfer kit and maintenance kit, although both contain a laser printer’s replacement parts. The maintenance kit or the preventive maintenance kit has the basic and general parts for replacement. As we know, each unit or mechanism of a printer has a lifespan. The kits are used to replace these units’ assembly so overusing may be prevented. The maintenance kit usually includes a transfer roller, multiple paper tray feed and retention rollers and some has pick up roller, Fuser, and even separation pads depending on the manufacturer. It may take thousands of cycles or years before a moving printer part needs replacement, however, it is always recommended to have one at a ready.

What’s in the kit?

transfer kit

On the other hand, the image transfer kit solely contains replacement parts for the transfer unit, which includes transfer drum, belt, charger, cleaning roller, and a charcoal filter. It would take more than 50,000 page yield for CMYK and at least more than 100,000 pages for monochrome before another replacement is required for the transfer unit. No worries how you will be able to figure out if it’s time to change the parts because the transfer unit also has a counter that also needs to be reset whenever replacement occurs. Don’t forget to calibrate though after resetting so you know that everything is still in order.

What needs replacement?

transfer kit


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The transfer unit is a moving part of the laser printer and therefore prone to problems and eventually wear out. Transferring of images requires precise movement of the transfer rollers and transfer belt for the toner. They must be correctly aligned so the image on the paper is accurately placed. As mentioned, the transfer unit is also responsible for clearing the excess toner so there wouldn’t be any build up or loose toner in any other part of the printer. When these parts are defective, unclean or worn out, expect numerous cases of poor quality printouts and other possible interior problems.

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