Windows 7: ! Printer not responding false message

Christmas Greetings to all forum members,

This is my first thread, and I hope I have chosen the appropriate place to seek help with a minor, but annoying, problem.

Recently, I set up an Apple Airport Express Base Station, connected to an existing Belkin N300 wireless router network. My Canon MX860 printer plugs into the USB port on the Express. The apparently easy way to set up a wireless printing network, where one wants to use computers with different operating systems... My Mac Book, Win 32-bit 7 PC (it needed Bonjour to work) and Ubuntu OS computer all print wirelessly from the printer. There are no problems or false error messages with the Mac or the Ubuntu computers. However, when I print from the Win 7 PC, under the printing details heading, there is a false message -

! Printer not responding

But it is! I am not sure if this is a driver problem.

Any one struck this quirk before?

Cheers, all

Ken