A toner cartridge having a magnetically coupled drive apparatus is
provided. The cartridge provides a first toner holding member that houses
toner and a second toner holding member adjacent to the first member that
houses toner. A dividing wall separates the first toner holding member
from the second toner holding member. A toner shifting component shifts
the waste toner housed in the first toner holding member and a toner
stirring component stirs the fresh toner housed in the second toner
holding member. The toner shifting component and toner stirring component
are magnetically coupled through the dividing wall so that when the toner
stirring component rotates the toner shifting component rotates. The
magnetic coupling disposed between the toner shifting component and toner
stirring component engages without an opening through the dividing wall.
As a result, waste toner cannot pass through the dividing wall into the
fresh toner housing and vice versa.