The laser value refers to the amount of exposure of the phototypesetting laser. It not only determines the size of the film's solid density and whether the dot value displayed by the software matches the input dot value of the imagesetter, but also has nothing to do with the life of the laser.
Under the requirement that the development and fixing requirements (temperature and time) are absolutely fixed, the film solid density D real ≥ 4.0, when the measured dot percentage of 50% is greater than 52%, the laser value can be appropriately increased; the measured dot of 50% When the percentage is less than 48%, the laser value can be appropriately increased. The increase and increase of 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 film type is changed, the laser value should be re-tested. Under the condition that the development, fixing and film are fixed, the laser exposure is also relatively fixed, which does not meet the request The position can be adjusted by film linearization.
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