Patent ID: 7580051

Claim:
A method for imaging a printing form in a large number of imaging steps, which comprises: providing a plurality of light sources with a first subset of light sources and a second subset of light sources; producing, with the plurality of light sources, a plurality of image points at a spacing greater than a minimum image point spacing in a row on the printing form in one of the large number of imaging steps, and thereby producing a first partial row of image points with the first subset of light sources and a second partial row of image points with the second subset of light sources; during a number of imaging steps, placing at least some of the image points of the first subset along the row in positions between image points of the first partial row, produced on the printing form in a preceding imaging step, and placing at least some of the image points of the second subset along the row in positions between image points of the second partial row produced on the printing form in a preceding imaging step; subsequently carrying out a further imaging step and placing at least some of the image points of the first subset along the row at positions between image points of the second partial row from the preceding imaging step; and choosing a local frequency defined by the forward movement in the number of imaging steps to be different from the local frequency of a grid of a subject to be imaged.