Oki IP-6620 Maintenance Manual page 529

8.3 Ink Delivery System
As shown in the following figure, the ink system consists of the ink cartridges, ink box, ink supply
pumps, ink supply tubes, capping unit, wiping unit, carriage board (HCB1M), IPB5 board, and ink
system control firmware.
8-8
Figure 8.4 Ink system outline block diagram
Figure 8.5 Conceptual diagram of ink system
OKI Data Infotech Corporation CONFIDENTIAL
Chapter 8 Operation Mechanism