Thanks for the tip. It worked.
Here's the requested file.
# Printer configuration file for CUPS v1.2.0
# Written by cupsd on 2006-05-21 13:56
Info EPSON Stylus CX5400
DeviceURI usb://EPSON/Stylus%20CX5400
State Idle
StateTime 1148234017
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod
There is someting strange: if I try to copy the file /etc/cups/printer.conf,
I get the following error message: can't read the
file /etc/cups/printer.conf (my translation, from French)
I've tried it as a root and as a normal user. I've even tried to stop cupsys
dameon in case it was locking