G - Physics – 03 – G
Patent
G - Physics
03
G
G03G 15/04 (2006.01) B41J 2/45 (2006.01) G03G 15/043 (2006.01)
Patent
CA 2421343
Described is a method for imaging a printing form (10) using tine or more laser diode bars having a number n of individually controllable laser diodes (16) whose imaging spots (20) lie essentially in a row on the printing form (10), for the case that at least one laser diode (16) on the laser diode bar (14) cannot be activated, but a maximum number m of laser diodes (16) whose neighboring imaging spots (20) have a distance a on the printing form (10) are able to be activated. The relative speed between the imaging device (12) and the printing form (10) is increased by the factor (n/m). The exposure time per printing dot (69) is shortened by the factor (m/n). In order to input in each case an amount of energy per printing dot (69) on the printing form (10), imaging is carried out using the m activatable laser diodes (16) with an imaging intensity which is a function of the exposure time and of the specific amount of energy per printing dot (69).
Dennison Associates
Heidelberger Druckmaschinen Aktiengesellschaft
LandOfFree
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