Maintaining Image Quality And Resolving Image Quality Problems - AGFA Drystar 4500 Reference Manual

Maintaining image quality and resolving image
quality problems
Calibration is necessary to maintain optimal Image Quality. This is required in
the following situations:
Before initial use of a film,
•
When loading new films into the input trays,
•
After a certain number of copies have been printed.
•
Overview of calibration functions
Three calibration functions are provided for the Drystar 4500.
Calibration
'Film calibration'
1
'Print head
2
cleaning'
'Print head
profile
3
calibration'
Some calibration functions are interrelated, so do not perform any of the
above calibration functions as an isolated procedure.
Before performing a calibration, read the general guidelines as described in
'Understanding the calibration policy'
2800E EN 20050215
Purpose
• To measure and set the
system density of the
printer.
• To measure and set the
film sensitometry
values.
To reduce irregularities on
the film.
To reduce vertical density
irregularities on the film.
on page 192.
D 4500 R
RYSTAR EFERENCE MANUAL
When?
• Automatic after 'n' film
packs printed.
• After an explicit action of
the operator.
• When image quality
problems occur.
• After an explicit action of
the operator.
Troubleshooting
191