A cradle unit for an inkjet printer comprising: a body complementary to a removable inkjet cartridge of a type having a pagewidth printhead and a refillable ink supply; and a controller for controlling the operation of the printhead to facilitate printing; wherein, said body is configured to receive a refill unit for supplying refill ink to the cartridge and includes a refill actuator for dispensing ink from said refill unit into said refillable ink supply.