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.
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.
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