This paper describes a computer model for the design integration of a laser marking system. The virtual marker consists of two sets of optical scan systems for the horizontal axis and the vertical axis, respectively. Each scanner includes a mirror as the beam deflecting device, a galvanometer as the actuator, and associated control electronics. A focusing lens is included in the beam path to reduce the spot size and increase the energy density of the laser beam at the marking surface. The virtual laser marker converts a specified pattern to be marked into images of simulated markings. Simulation results as well as experimental results are presented.