US Patent 7106472 Print driver for an extended printing device

A print driver is provided for use in printing a document from a computing device to an extended printing device are provided, the extended printing device being based upon a base printing device. The print driver typically includes a base module configured to process at least one print operation involving printer-specific attributes of the extended printing device that are shared with the base printing device, and an interface module configured to enable an extended module to be added to the print driver to process at least one print operation involving printer-specific attributes of the extended printing device that are not shared with the base printing device.