[ubuntu] shared printer undetected

Hello,

stupid problem here but is keeping me blocked...

I have a printer coected with a USB cable to pc-A (ubuntu 16.04). It works fine.

pc-B (ubuntu 16.04) is coected on the same network, actually under the same hub. pc-B sees some 15 printers in the offices around but not the one under pc-A.

From pc-B I can ssh to pc-A without problem.

What am I missing?

best and thanks in advance
g.