Epson STYLUS PRO 9400 - Ink Supply Mechanism

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Operating Principles Print Mechanism Components 165
2.2.5 Ink Supply Mechanism
The Stylus Pro 7800/9800 have two Ink Holders (I/H) on left and right side of them
and each I/H carries 8 cartridges for 8 colors. A projection and unique marking are
placed on each color ink cartridge case to prevent wrong insertion so that the correct
cartridge is inserted in the right direction.
 Explanation of valve mechanism mounted on the cartridge
The valve opens and closes when the ink cartridge lever is manually moved up or
down.
Figure 2-16. Valve Mechanism
The ink flow is as shown below.
Each color’s ink cartridge
→ Each color's I/H (Ink Holder) → Each color’s ink tube →
Each color’s head dumper (carriage)
→ Print Head. The information in the NVRAM of
each color ink cartridge is sent through the CSIC Relay Board in each ink holder and
stored in memory on the CSIC Board.
The CSIC Board stores various pieces of information, such as ink colors and remaining
amount of ink. See “Ink Info Menu” (p.104).
Figure 2-17. Ink Supply Mechanism
From the
Pressure Pump
To print head
Ink Holder
(manual opening/
closing)
Air Supply Vent
Ink cartridge
Ink Cartridge
Holder (x 4)
Print Head
Ink Tube (x 8)
To Each Color Head Damper
Damper (x8)
Pressure Pump
Ink Cartridge
Holder (x 4)
Ink Cartridge (x 8)