Abstract: A laser diode collimating system comprises a collimating lens for receiving a laser beam from a laser diode LD. First and second orthogonally arranged cylindrical lenses are provided through which the laser beam passes. The cylindrical lenses are positioned so as to have a substantially common focal plane and operate substantially independently on the divergence and/or convergence of the laser beam in its fast axis and slow axis directions respectively. A convex lens, through which the beam passes, has a focus lying in the said common focal plane.

Abstract: A laser diode collimating system comprises a collimating lens for receiving a laser beam from a laser diode LD. First and second orthogonally arranged cylindrical lenses are provided through which the laser beam passes. The cylindrical lenses are positioned so as to have a substantially common focal plane and operate substantially independently on the divergence and/or convergence of the laser beam in its fast axis and slow axis directions respectively. A convex lens, through which the beam passes, has a focus lying in the said common focal plane.

Abstract: Apparatus for exposing an image recording medium, the apparatus comprising a radiation source; a switch comprising an input arranged Lo receive radiation from the radiation source, and a plurality of imaging outputs, wherein the switch selectively routes the radiation received at the input to a selected one of the imaging outputs; and a device for directing the radiation from each imaging output onto the image recording medium to expose the image recording medium.

Abstract: A method of input scanning an image using a detector comprising an array of radiation sensors, the method comprising1) exposing the radiation sensors to radiation from the image over a plurality of sampling periods, and for each respective sampling period:2) obtaining a single data value from each radiation sensor;3) summing the data values obtained during the sampling period;4) determining a peripheral response value in accordance with the sum obtained in step 3), wherein the peripheral response value for each sampling period is determined independently of the peripheral response values for the other sampling periods; and5) modifying the data values in accordance with the peripheral response value obtained in step 4).