The actual material being printed on is usually paper which is out of wood, how ever the printer may be made out of metal, and I am confused on which one you are asking about.
I believe the answer would be by radio. I hope this helps!
As an adhesive for two materials that aren't too smooth.
In the Vegas lights
Where villains spend the weekend
The deep end
We're swimming with the sharks until we drown.
By: Panic! at the disco.
Album: Too Weird to Live, Too Rare to Die!
Answer:
It added depth and made it more realistic. It opened artists and peoples eyes to the idea of representing distance and depth in art.
Explanation: