Sorry for delay, I detailed process at length then web page became unavailable. let's try again.
On the Canon printer,
Additional features button,
one Touch button
browse for server, and computer name
then "name and password" fields appear,
After submitting these they are blanked out ready for re-entry.
Network cable through a BrightBox (supplied by Orange for my Broadband).
N.B. Printing works perfectly.