Toner Density Control - Ricoh M001 Service Manual

Toner Density Control

More toner is fed when the
toner coating on the
development roller is thin
[A]: Pre-doctor blade
[B]: Doctor blade
[C]: Circulation of developer
A mixture of toner and developer circulates at the pre-doctor blade [A].
When the toner on the development roller decreases, the circulating region [C] gets smaller
to let more toner get to the development roller.
When the toner on the development roller increases, the circulating region [C] gets bigger
to let less toner get to the development roller.
SM
Less toner is fed when the toner
coating on the development roller
is thick
6-13
Printing Process
M001