Interface card for coupling a computer to an external device

摘要

Apparatus for printing a graphic image on a substrate, a method performed thereby and a card for use in the apparatus, the apparatus being composed of: a computer containing a motherboard which carries a card connector and random access memory, the computer being controlled by an operating system; a controller for storing image data in the random access memory; a card connected to the card connector and having a printing device interface and components for transferring stored image data from the random access memory to the printing device interface; and a digital color printing device connected to the printing device interface for printing the graphic image on the substrate on the basis of stored image data transferred from the random access memory.