Network printer error

[Colin Law]

On Mon, 2 Nov 2020 at 01:38, Brandon Butler
<brandon.butler6 at education.nsw.gov.au> wrote:
>
> Dear Sir/Madam
>
> It is a pleasure to meet you and I hope you are doing well.
>
> My computer runs Ubuntu 20.04.1 and I experience an error in CUPS
> regarding being unable to resolve the IP address belonging to the
> network printer which uses the default drivers from when Ubuntu
> automatically detected and added that network printer after
> installation. The printer model concerned is an EPSON WorkForce
> WF-3640 and is connected via Ethernet and assigned a static IP address
> in the printer's firmware settings and the router's DHCP allocation
> configuration.

First see if you can ping that address when the printer is operating
normally.  I would expect that the printer should respond to ping.
Assuming you can then try the ping again when the printer is not
accessible.  If you can't then it is not to do with the printer driver
but is a network problem or a problem with the printer.
Are you able to access other devices on the network when the printer
is not accessible?
Also, if you have another device on the network, try pinging the
printer from that device.
If you have other devices are you able to print from them when this
machine will not print.

Colin