Installing Canon-BJC265sp printer: do I need more than PPD file?

I have recently installed Ubuntu Linux. I have installed my Canon-BJC 265sp printer through CUPS. Or at least it looks as if I have. The CUPS web interface shows:

Description: CANON
Location: Local Printer
Make and Model: Canon BJC-265SP Foomatic/bjc250gs (recommended)
Printer State: processing, accepting jobs, published.
Device URI: canon:/dev/lp0

Only, when I tried to print a test page, or anything else, the light on the printer flashes, paper starts feeding - and then nothing happens.

All I've done to install the printer is download the PPD file and tell CUPS where it is. Have I missed something? CUPS seems to think it has the driver it wants. But other sources on the web, e.g. http://bjc250gs.sourceforge.net/, suggest much more complicated and lengthy installation procedures.