Patent ID: 7952603

Claim:
Apparatus for marking on laser-responsive medium, comprising: a laser arranged to emit a beam of laser-radiation; a scanning mirror reciprocally oscillatable about a rotation-axis; a focusing lens; an optical arrangement for delivering the beam to the scanning minor, the scanning minor being arranged to direct the beam to the focusing lens, and the focusing lens being arranged to focus the beam to a focal-spot on the medium; a carriage on which the scanning mirror and focusing lens are mounted, said carriage being movable in a first (X) direction parallel to the rotation-axis of the scanning mirror such that the focal-spot is swept back and forth in a second (Y) direction, perpendicular to the first direction, to create a wave-like path over the medium as the carriage is moved in the first (X) direction; and a mechanical arrangement for incrementally driving the medium in the second (Y) direction such that the focal-spot can be swept in another wave-like path over the medium with the second wave-like path being parallel to the first wave-like path and wherein the laser beam intensity is modulated based on the position of the scanning mirror to selectively mark pixels on the laser-responsive medium.