Epson STYLUS Scan 2500 Service Manual page 36

EPSON Stylus Scan 2500
Ink Out
sensor
actuators
PZT
(Piezo)
unit
Nozzle
plate
Figure 2-2. Printhead Sectional Drawing
Ink Out sensor actuators (x2)
The Ink Out sensors (x2) detects whether or not an ink cartridge is
installed according to the position of the Ink Out sensor actuator.
When a cartridge is installed, the actuator is pushed down, which
turns the shaft that is connected to the actuator. The flag at the other
end of the shaft activates the Ink Out sensor when the cartridge is fully
in place.
See the next page for more details on the nozzle selector board and the ink
ejecting process.
Operating Principles
Nozzle selector
Board
Needle
Ink cartridge
Filter
Ink cavity
Printer Mechanism Operation
Revision A
36