Printers of all types are limited in the quality of printing that it is capable of. The resolution of the printer determines the quality of the output available.
Resolution is defined as defined by the dictionary is the degree of sharpness of a computer-generated image as measured by the number of dots per linear inch in a hard-copy printout or the number of pixels across and down on a display screen.
The amount of resolution is usually stated in dots per inch (dpi). All id card printers in the current market, whether entry level or professional level print at a 300 dpi resolution.