LED Print Head
This black bar is the transfer mechanism that writes received/copied information to the image drum. This bar should be cleaned each time the toner cartridge is changed.
Image Drum Unit
The image drum unit contains a green photosensitive drum which receives information from the LED print head and transfers it to the printing paper.
Toner Cartridge
This black cylinder, installed inside the image drum unit, contains the black powder used as the machine’s ink for printing data. Install a new toner cartridge* when the Replace Toner Cart message appears on the display panel.
*Only toner cartridges specified for use in this machine by Oki should be installed.
Handbook 7