AGFA Drystar 5302 Reference Manual page 136

D 5302 R
RYSTAR EFERENCE MANUAL
Performing the Annual QC tests
Geometric Consistency Test
To be able to notice fluctuations in image size and aspect ratio, you must
perform this procedure once a year.
First, perform the daily test.
1
Use the QC test image of the weekly test and measure the dimensions A and B of
2
the geometric square. Refer to
on page 131.
Make sure to measure distance A from the left edge of the left line to the
right edge of the right line and distance B from the upper edge of the
upper line to the lower edge of the lower line.
We strongly recommend using a 30 cm (12-inch) machinist scale with
0.5 mm divisions (1/64 inch).
Record these values as measured dimensions A and B on Chart 4 ('Drystar 5302
3
Geometric Consistency Control Chart').
Compare the measured A and B dimensions with the reference dimension
4
values, A
ref
Chart').
The differences between measured dimensions of A and B and the reference values
A and B
ref ref
Check for image distortion.
5
Calculate the aspect ratio by dividing A by B.
6
The result must be 1 +/- 0.01
If the image size or distortion values are outside of limits, contact Agfa
service to resolve the problem.
136
Advanced operation (Key-operator mode)
and B on Chart 4 ('Drystar 5302 Geometric Consistency Control
ref
should be less than or equal to 1.0%.
'Establishing the image geometry reference values'
2830A EN 20050526