Dumper; I/H Lever Sensor; Ink Route Inside Of Dumper - Epson Stylus Pro 4400 Service Manual

EPSON Stylus Pro 4400/4450/4800/4880/4880C

Dumper

The dumper is equipped with a valve to prevent reverse flow of ink, and
when this valve opens the ink inside the ink storage space within the
dumper flows and is supplied to the Print Head. Numbers
the figure explain the ink flow sequence inside the dumper.
Front
Figure 2-4. Ink Route inside of Dumper (1)
Valve Close
Figure 2-5. Ink Route inside of Dumper (2)
Operating Principles
though
Back
1
2
3
4
5
Valve Open
Printer Mechanism Components

I/H lever sensor

The left I/H and right I/H each have 1 I/H Lever Sensor located on the side.
This sensor uses a reverse tension switch (mechanical contact) to detect
in whether the ink cartridge is set or released by the ink lever.
Figure 2-6. I/H Lever Sensor
I/H Lever Sensor (Left)
I/H Lever Sensor (Right)
Revision C
119