Hitachi IJ UX Instruction Manual page 23

(2) External views (rear side)
Air-purge
connection port
Attention to the instruction of IJ printer
Stainless steel of the main body has the character it not to be easy rust, but it is
a possibility that rust is generated when leaving it for a long time. To prevent rust
being generated, we will recommend that the surface of the main body be kept
clean as much as possible.
Exhaust duct
connection port
●External views 2-2