Ink Supply Mechanism; Ink-Related Sensors - Epson StylusPRO 7000 Service Manual

EPSON Stylus Pro 7000

2.2.5 Ink Supply Mechanism

There is only one ink cartridge holder for all six cartridges. The design of the
holder makes it quite easy to install and replace ink cartridges from the front
of the printer. To prevent users from accidently installing a color ink cartridge
in the wrong slot, the cartridges have slightly different designs.
One of the main differences between the EPSON Stylus Pro 9000 and 7000 is
that there is no ink tube valve. So no more embarrassing tales about tearing
the printer apart only to realize that the valve on the side was closed. On the
other hand, before moving the printer you or the user now has to flush the ink
system as described in "Transportation Mode" on page 54.
Another difference is that the ink tubes are clear, allowing you to check ink
flow visually.
Operating Principles

INK-RELATED SENSORS

The following sensors are located in the ink cartridge compartments.
"
Ink Cartridge sensor
This mechanical sensor (microswitch) is built in all six ink cartridge
slots.
When a cartridge is installed, switch = closed
When a cartridge is not installed, switch = open
"
Ink Low sensor
This mechanical sensor (microswitch) is at the bottom of all six ink
cartridge slots and detects when ink is running out.
When the I/C is nearly empty, the switch = open
When the I/C is not low (normal), the switch = closed
Ink Cartridge
Description of Components
Ink Low Sensor
Figure 2-14. Ink Cartridge Holder Sensors
Revision A
Ink Cartridge Sensor
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