Printing exposure laser adjustment

What is the laser value? How to adjust?

Answer: The laser value refers to the exposure of the phototypesetting laser. It not only determines the size of the film on-site density and whether the dot value displayed by the software is consistent with the output dot value of the imagesetter, but also is closely related to the life of the laser. Therefore, a suitable laser value should be selected for the contrast printer in the development and fixing conditions (Temperature and time) Under relatively fixed conditions, the film solid density D real ≥ 4.0, when the measured 50% dot percentage is greater than 52%, the laser value can be appropriately reduced; when the measured 50% dot percentage is less than 48% The laser value can be increased appropriately, and the range of increasing and decreasing the laser value should make the 50% dot percentage error within ± 2%. Similarly, when D is less than 4.0, when the measured dot value at 50% is greater than 52%, the laser value should be appropriately reduced. When the dot value at 50% is less than 48%, the laser value should be appropriately increased . The laser exposure of different types of film will be different, so every time the type of film is changed, the laser value should be re-tested. When the development, fixing and film are fixed, the laser exposure is also fixed, and there are some The place can be adjusted by film linearization.

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