2.1 Main Components and Functions 35
Front cover opened with the lever A
utput tray cover
(Can be opened by pressing the orange button on the left after opening the front
cover.)
Front cover opened with the button B
Interior
No. Name Description
1 Toner cartridges Each contains toner of one of four colors: black, yellow, magenta, and cyan.
During printing, the part of the printer that holds the cartridges rotates, and the
cartridges deposit toner on paper.
2 Drum cartridge Consists of a photosensitive drum, an intermediate transfer belt, and a waste
toner box. An electric charge is first projected on the drum and develops a print
image on the drum's surface.
3 Fuser Unit Fuses toner onto paper by means of heat and pressure.
Important
• Do not touch the fuser unit while the printer is in operation. The fuser unit
becomes very hot during printing.
4 Duplex unit Enables 2-sided printing. This is optional for the DocuPrint C3055.