Creo Dolev 4press V, User Manual

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Calibrating Laser Intensity 73
Calibrating Laser Intensity
Use newly processed films as the basis for creating a set of default
imagesetter Res/Int tables.
To create the test exposure, proceed as follows:
1.
Ensure that the imagesetter control panel displays the STANDBY
message.
2.
In Service Utilities mode, select
Expose: Test Intensity
.
3.
Fill in the fields in the window which appears.
4.
Press
Done
when you have completed filling the window. The
imagesetter starts exposing the current set of intensity strips.
5.
Repeat this procedure to expose a set of strips for each relevant
resolution: 60, 80, 100, 120, 140, and 160.
Perform the following for each set of strips:
1.
Measure the density of the exposed strips on a light table.
2.
Look for the density you require (above 4.0) and write down the
intensity which appears next to this strip on the film.
3.
To set the new laser intensity value to be used for the current plotting
resolution, select
Util: Res. Int. Setting
on the control panel. The
Service Utilities mode is activated.
Note: Laser intensity must be calibrated for each film type and plotting
resolution used in order to guarantee consistent high-quality exposure.
Note: If you are performing this procedure for the first time, use a high
Intensity Step at first, and gradually reduce it until you find the optimal step.
Note: If you cannot find a strip with the desired density on the film set,
adjust the overall laser intensity and recreate the strips.