4-1
4. Maintenance of Circulation System
4.1 Structure of Circulation System
4.1.1 Structure of Circulation System
The general structure of the circulation system is shown in the following figure. Using an
open/close type door (unit door) as a partition, the system is roughly divided into an ink
circulating area (the front side of the equipment) and a driving part area (the rear side of
the equipment).
< Circulation unit: front view >