I correct myself:

I can see the printer, that is connected to computer server, inside the web browser of the computer client at localhost:631.

I read that I can indicate the IP of the client in the file cupsd.conf on the server.
And there I put  :
-----
<Location />
  # Allow remote access...
  Order allow,deny
  Allow all
</Location>
----
I put there "Allow all", because I am not sure about which concrete IP address of client to write  because the IP addresses are assigned (from DHCP) dynamically,  and I find  different values  evry time the computer start..
 

On Wed, Sep 14, 2016 at 11:10 AM, Angelo Moreschini <mrangelo.fedora@gmail.com> wrote:
Hi,

I have a network printer (that I can see on the computer server browser at localhost:631).
When I try to use it,  the jobs are  not processed... - and I get the message
                                      " the printer is not responding".

I fund this information at link ;
https://wiki.archlinux.org/index.php/CUPS/Troubleshooting#All_jobs_are_.22The_printer_is_not_responding.22

-------------------------

All jobs are "The printer is not responding"

On networked printers, you should check that the name that CUPS uses as its connection URI resolves to the printer's IP via DNS, e.g. If your printer's connection looks like this: 

lpd://BRN_020554/BINARY_P1

then the hostname 'BRN_020554' needs to resolve to the printer's IP from the server running CUPS

------------------------

I understand what this means...
but I don't know how to accomplice the task:
                        resolve that the IP from the server running CUPS

Any help to do this will be appreciated.

Thank you

Angelo