What is a drum cartridge and what is the difference between a drum cartridge and a toner cartridge?
A Toner Cartridge holds toner and dispenses it as needed to make
copies (in a copier) or to print pages (in a printer).
Another element in xerographic copiers is the photoreceptor
drum. This is the surface to which the toner adheres before being
transfered to the paper. The photoreceptor has a long but finite
useful lifetime and must be replaced occasionally. Some
copiers/printers have drum cartridges which can be changed out by
the user. The alternative would be to have a service person open
the machine and replace the photoreceptor drum.
So, a drum cartridge alows the user to replace the photoreceptor
drum and a toner cartridge allows the user to replenish toner
supplies, both easier than before cartridges were developed for