Patent ID: 7292259

Claim:
A system for recording a datum onto a pixel on a light-sensitive-sheet, said system comprising: a controlling/processing unit for receiving the datum, and controlling a first actuating device and a second actuating device; a recording head disposed to face a side of the sheet where the pixel is formed when the sheet is installed in said system, the recording head comprising: a light-emitting device for emitting a light; an interfering device having a plurality of gratings, the interfering device being disposed in a way, so that the light is interfered by at least one of the plurality of gratings, wherein the controlling/processing unit determines the at least one grating from the plurality of gratings in accordance with the datum; and the second actuating device, for movably carrying the interfering device, the controlling/processing unit controlling the second actuating device to move the interfering device to interfere the light; and the first actuating device, for movably carrying the recording head, the controlling/processing unit controlling the first actuating device to move the recording head to a position corresponding to the pixel on the sheet.