Konica Minolta DRYPRO793 Installation Manual page 157

Ch.4 Checking Image Quality
(2) For Film Sizes 10X12, 8X10
30% 40% 50% 50% 60%
20%
10%
0%
01 01
02 02
03 03
04 04
05 05
06 06
07 07
08 08
09 09
10 10
11 11
12 12
13 13
14 14
15 15
16 16
01 01
02 02
03 03
04 04
05 05
06 06
07 07
08 08
09 09
10 10
11 11
12 12
13 13
14 14
15 15
16 16
In cases where the printed SMPTE pattern shows abnormalities, appropriate
measures should be taken as detailed in the chapter dealing with resolving
problems in the service manual.
Installation engineers must take film printed during the process of installation and
adjustments with them after completion of work.
DRYPRO Vstage MODEL 793 Installation Manual Ver.1.00 2004.11
1
Check to ensure that the densitometer to be
used is adjusted to zero.
2
Out of the 11 gray scale levels (12 points)on the
70%
SMPTE pattern, use the densitometer to
80%
measure the density value at one location at the
top of the film (where there are density patches
90%
and notches).
100%
- Measure 12 points within the same gray scale
between 0% and 100%. Caution must be exercised
since there are two points corresponding to 50%.
3
Check the differences in density between the
measured and standard values.
- The print is judged to be normal if values measured
at each point fall within the criteria for the
maximum and minimum values.
For standard, maximum and minimum values, refer
to Chart-B.
With the exception of values shown with
asterisks (*), values within the standard +/-0.05D
are judged to be normal.
4
In cases where there are points that fall outside
the prescribed range, the following checks
should be carried out.
1.Was calibration carried out before test printing?
→If any of the supply trays have not been
calibrated, calibration should be executed and
test printing/density judgement carried out
again.
2.Was the internal densitometer calibration result
normal?
→If not normal, densitometer calibration should
be re-executed and test printing/density
judgement carried out again.
< 153 >
SMPTE patterns
printed on 10X12, and
8X10 sizes contain two
patterns on one sheet.
Do not measure the 16
step gray scale on
10X12 and 8X12 sizes.
p.153 Chart B