(c) With each succeeding process of film, another control strip is
processed along with the film.
The densities of these control strips are
also measured with a densitometer and then compared to the standard control
strip's densities.
The differences between the two strips are plotted on
the control chart. If these differences are within acceptable tolerances,
the process is in control.
If not, through proper analysis you should be
able to determine the reason why.
Film and chemical manufacturers supply
this information for this purpose. The exact procedures are not within the
scope of this course.
15.
Summary.
This concludes lesson 2.
Before proceeding to lesson 3, complete the
following practice exercise.
If you have any problems, refer back to the
pages indicated in the practice exercise answer key and feedback.
Then
continue to lesson 3.
2-21
SS0514
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