Tesco Canon PGI-550 XL Ink Cartridge Black, New and Sealed | eBay
Canon UK and Ireland on Twitter: "@sputniksteve @Tesco Thanks. Error 1485 is displayed when an 'appropriate ink cartridge is not installed' so this may indicate a problem with the ink cartridge itself.
Tesco Compatible Printer Ink Cartridges for Canon for sale | eBay