Ink Supply Mechanism; Ink Flow Path; Ink Pressurizing Mechanism - Epson Stylus Pro 3800 Service Manual

Epson Stylus Pro 3800/3800C/3850/3880/3885/3890

2.3 Ink Supply Mechanism

2.3.1 Ink Flow Path

The ink flow path is shown below.
Ink Cartridge
Figure 2-5. Ink Flow Path
OPERATING PRINCIPLES

2.3.2 Ink Pressurizing Mechanism

This printer employs an ink pressurizing mechanism to stably supply ink in the ink
cartridge (ink pack) to the print head. This ink pressurizing mechanism consists of a
pressure pump unit installed in an ink supply mechanism and tightly-sealed ink
cartridges. Air pumped into the tightly-sealed ink cartridge from the pressure pump
unit squashes the ink pack in the cartridge, causing the ink inside the pack to be
transferred to the print head.
Ink Selector
+
Dumper
Pressure Pump
Print Head
Ink Supply Mechanism
Pressure Sensor Unit
Figure 2-6. Ink Pressurizing Mechanism
Revision C
Ink Cartridge
To Print Head
Air flow path
Ink flow path
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