For very high quality requirements after longer
phases without full color printing
For very high quality requirements after longer
period of time in standby
For very high quality requirements if the color
control is switched on again after longer phases of
print operation with the color control switched
off
If the tone transfer curve is to be checked in the
current status of the printing system
Perform automatic calibration
(see ‘Calibrating the Colors of the
Printing System — Overview’ on
page 244).
If there are large differences in the tone transfer
curve between the upper and the lower print unit
For an error message triggered by the internal half-
tone control:
EL.117.089 ... EL.117.093 / EL.117.124 ...
EL.117.128
EU.117.089 ... EU.117.093 / EU.117.124 ...
EU.117.128
Example:
EL.117.089: 'OPC lower print unit (developer
station 10): Determined tone transfer curve outside
the limit range'
Perform automatic calibration
(see ‘Calibrating the Colors of the
Printing System — Overview’ on
page 244).
For an error message triggered by the external half-
tone control:
EL.362.124 ... EL.362.128
EU.362.124 ... EU.362.128
Example:
EL.362.124: 'OPC lower print unit (developer
station 10): Determined tone transfer curve outside
the limit range'
Perform manual calibration for
this new paper type (see ‘Calibrat-
ing the Colors of the Printing Sys-
tem — Overview’ on page 244).
When using new paper with very different color-
metric properties (for example, if the paper is
changed from white to yellow)
Chapter 6 - Operating the Printing System240
Optimizing the Color Printing — Overview
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