Oki IP-6620 Maintenance Manual page 534

8.4 Various Functions for Printing
(1) Cleaning sequence
The following cleaning sequences are included in the printer for optimal printing. Cleaning is
mainly executed by the capping unit, wiping unit, and ink system control firmware. Flushing is
executed by the head unit and control firmware.
- Manual cleaning (Normal / Strong)
To execute this sequence, operate the menu displayed on the operation panel. Use this
sequence when clogged nozzles are not cleared after performing automatic cleaning
included in the printer.
- Automatic cleaning
This sequence is automatically performed when printing.
- Cleaning during idle period (fillcap)
This sequence is automatically performed during idle period of the printer in order to provide
optimal printing condition for the next printing job.
- Automatic air removal from ink tubes
The LCIS model uses non-degassed ink. Therefore, air enters the ink tubes while the ink is
consumed, which may lead to ink ejection problems.
To prevent such problems, an operation to remove air is automatically performed after 3 liters
of ink are consumed.
OKI Data Infotech Corporation CONFIDENTIAL
Chapter 8 Operation Mechanism
8-13