HP indigo 4500

[Aleksandaraci]

Hello, I am looking this HP indigo 4500, don’t know what the orange part is on the picture; is that factory part, and what is this for?

 

[rolermanto]

Hello, I am looking this HP indigo 4500, don’t know what the orange part is on the picture; is that factory part, and what is this for?

Hello,
This is old system developed to eliminate the vacuum boxes and work with balanced roller.
As i remember was developed from print’s paul years ago