Ink Supply Control - Ricoh C231 Service Manual

6.8.5 INK SUPPLY CONTROL

[B]
Mechanism
When the ink level is low, the pins [A] do not touch the ink.
↓
The ink pump motor keeps the ink level normal by supplying ink when the level is
low.
NOTE: 1) The ink detection pins [A] detect the capacitance of the ink between the
ink roller [B] and doctor roller [C].
2) If the pins detect an insufficient amount of ink after activating the ink
pump motor for 27 seconds, a "no ink condition" is detected. The add ink
indicator on the operation panel will light.
3) The ink roller blades [D] on both ends of the ink roller scrape off the
built-up ink on the ends of the ink roller.
SM
[C]
[D]
6-27
[A]
C267D014.WMF
DRUM
C267