... ;4. warranty 3 month.We have almost all models of printer parts, and we are involved in: 1) Dot matrix printer ... , carriage, RDA, ribbon mask, tractor, gears... 2) Laser printer parts, like fuser film, heating elements, upper roller & pressure roller, transfer ... roller, format board, power board, scanner, and fuser unit... 3) Barcode (Label) printer parts: scanner head, mother board, power board, main ...