Laser versus Dot Peen?
Laser markers normally provide a more precise mark than a dot peen marker. Since the precision of the mark is an important factor in machine readability, this results in better readability for laser marking in certain applications. Dot peen marks are by nature low contrast marks, which depend solely on illumination techniques to create the contrast required for marking. On the other hand, in certain applications, laser marks produce higher contrast, which tends to add to their readability. The minimum size of a dot peen 16 x 16 element code is around 4 x 4 mm. By contrast, a laser code of the same structure can still be read with similar ease at half the size ( 2 x 2 mm). Dot peen markers imprint a round dot; whereas a laser marker is capable of marking a square cell. This adds to the relative readability of laser marks in 2D applications, since a theoretically perfect 2D code is based on square cells. Dot peen markers cost considerably less than laser markers. A dot peen marker utiliz
