I own a digital print shop so have used lots of laser printers in the past, i have 3 colour laser printers atm 2 canon and one konica minolta and they all use continuos tone and produce great photos but they cost up to £36,000 each and yet dont even come close to my canon i9000 desktop inkjet costing £300, desktop lasers dont use this method and use diffusion i think and you will get a banding effect, bad contrast and bad graduations