Printing Posters at the Conference
The CCIB recommends using the company “Workcenter”. They are not nearby but they are opened 24 hours (there is no printing company near the CCIB). See their link below:
You can contact Silvia directly. Her email address is Silvia.firstname.lastname@example.org
AND- THIS ONE IS CLOSER
The address is
C/ Rocafort, 152 08015 Barcelona
If you are interested in other places closer to your hotel you can try
to search in google maps for "copisteria"