Chapter 2
2-17
b) Nozzle assembly structure
Inks supplied from the ink tanks are filtered through a mesh ink filter before being sent to the nozzle assembly.
Each nozzle train is supplied with an ink from the common nozzle chamber. When a head drive current flows
through the nozzle heater, the ink boils, generating bubbles to discharge ink drops from the nozzle from the
nozzle assembly.
F-2-11
2.3.2.5 Purge Unit
2.3.2.5.1 Functions of Purge Unit
0013-8022
The purge unit maintains the nozzle assembly of the printhead to maintain print quality.
Functions provided by the purge unit include capping, cleaning and ink supply.
a) Capping function
The capping function presses the caps in the purge unit against the face plate of the nozzle assembly to protect
against drying and foreign matter adherence.
Capping takes place at the end of printing, during a suction operation and when the printer stands by in the wake
of an error occurrence.
The capping function connects the printhead to the ink passage of the purge unit.
b) Cleaning function
The cleaning function restores the nozzles to facilitate ink discharges through them. It consists of the following
three operations:
-Wiping operation
Wipe off paper fibers or residual inks adhering to the face plate of the printhead.
-Pumping operation
Sucks inks from the nozzle assembly and refreshes the inside of the nozzles with new inks.
-Maintenance jet operation
Discharges inks from the nozzle assembly to the caps or to the borderless printing ink jet tray and paper surface
to remove bubbles in the nozzles and dust around the ink discharge ports.
The cleaning function is described below
T-2-3
Cleaning
mode
Name
Description of cleaning
Cleaning 1
Normal cleaning
Removes dried ink from nozzles, thick ink
accumulated on the face, and paper particles.
Cleaning 2
Ink level adjustment
cleaning
Adjust the ink level in the head by suction, and then
performs normal cleaning.
Resin
Sillicon plate
Heater
Shared ink chamber
Heater
Содержание iPF700
Страница 11: ...Chapter 1 PRODUCT DESCRIPTION ...
Страница 44: ...Chapter 2 TECHNICAL REFERENCE ...
Страница 85: ...Chapter 3 INSTALLATION ...
Страница 89: ...Chapter 4 DISASSEMBLY REASSEMBLY ...
Страница 121: ...Chapter 5 MAINTENANCE ...
Страница 124: ...Chapter 6 TROUBLESHOOTING ...
Страница 169: ...Chapter 7 SERVICE MODE ...
Страница 189: ...Chapter 8 ERROR CODE ...
Страница 197: ...APPENDIX ...
Страница 202: ......