Probably mine was a resolving issue. I played with /etc/nsswitch.conf to work 
with a VPN and ended up modifying the hosts row this way:
hosts:          files mdns4_minimal [NOTFOUND=return] resolve dns

(note the missing [!UNAVAIL=return] )

I removed the "resolve" keyword and installed libnss-resolve, fixing the row 
this way:
hosts:          files mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] 
dns
and now the printer is recognized and works.

HTH

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to cups in Ubuntu.
https://bugs.launchpad.net/bugs/1873429

Title:
  Problem with printing in 20.04 version

Status in cups package in Ubuntu:
  Confirmed

Bug description:
  In previous 19.10 my Epson Stylus CX3600 both prints & scans fine.

  In 20.04 it scans fine, but in print mode the process banners show the
  job is sent to the printer, then printing is complete. However there
  is no print output. I reinstalled the Epson print drivers but without
  success.

  I'm staying on 20.04, but by running Ubuntu 19.10 from a USB drive the
  printing issue is solved. The Epson is recognised and my documents
  print and scan fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gnome-control-center 1:3.36.1-1ubuntu5
  ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30
  Uname: Linux 5.4.0-24-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 17 10:59:10 2020
  InstallationDate: Installed on 2019-12-10 (128 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: gnome-control-center
  UpgradeStatus: Upgraded to focal on 2020-04-01 (15 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1873429/+subscriptions

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