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72 Chapter 4 – Calibration and Service Utilities
General
This chapter explains how to set a laser intensity value for each plotting
resolution via the control panel. In addition, the functions available in
Service Utilities mode are listed.
Resolution Intensity Calibration
To guarantee high-quality exposures, a unique laser intensity is required
for each plotting resolution (60, 80, 100, 120, 140, and 160 points/
millimeter).
If the laser intensity is too low, the exposure is too light and quality is lost
(that is, black areas are not uniform, and thin lines and small text may
disappear).
If the laser intensity is too high, thin lines may become too thick and small
text may be covered. In addition, the life of the laser is also shortened.
Each type of film requires a unique laser intensity. Each film manufacturer
has slightly different specifications for various types of film. If you switch
to a new type of film, you must expose several strips of film and check the
density to ensure that the exposure is still of the same high quality. You
must check which laser intensity on the imagesetter yields your desired
exposure results.
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