55
Ricoh Co. Ltd.
http://www.ricoh.com/
Model: M-G1a/M-G1b/M-G1L/M-G1W/R-
G1
Machine Codes:
J017/J019/J021/J023/J018
Slide 55
Ink level monitored
electrically via sensor pins
in head tank.
Ink level monitored
mechanically via arms
attached to bellows in head
tank.
To maintain proper
pressure and ink level in
print head tank, air release
valves adjust tank air
pressure level as needed.
Ink level is controlled by
a combination of input from
electrical sensor pins
(detecting excess air / lack
of ink) and mechanical
feeler arms attached to tank
bellows.
Redesigned (electrical)
ink level detection pins
reduce detection errors
brought about by machine
tilting.
Sensor Pins
(Electrical)
Ink Inputs
Air Release Valves
Feeler Arms
(Mechanical)
Print Head
Air
Filter
Print Heads - 1/2
Redesigned
•
Air Release
Valves have been
redesigned (see
next slide) with
filter to block dust
from entering.
•
Sensor pins
have been
redesigned to
increase accuracy
under tilted
conditions.
No additional notes.