Creating Printer Profiles: The Option ‘Highlights’ for Simulating the First Printed Tone

In flexo printing the first printed tone is often subject to a rather high tone value increase. Additionally, in some flexo printing processes there is no transfer of tone values below a certain percentage in the highlight areas. However, the simulation of those process properties is particularly important for proofing applications to truly simulate the final print result in the highlights. It may also be necessary to increase the tone values in the highlights when using the profile for production or separation.

For that reason we integrated four settings in CoPrA to adjust the Highlights when creating printer profiles (New Printer Profile > Customize > General).

These settings allow you to specify when the First Printed Tone in the profile should be recognized and appear in the proof (hard or soft proof) or how high the tone value will print at 1%. This ensures that your proof matches your printout. Analogically, when a profile is used for separation which was created with a value of 3% for the first printed tone, small tonal values will be raised to 3% to be printed reliably.

Default: This setting results in ‘normal’ profiling behavior in highlight areas. Use this setting for all printing processes that don’t require any adjustment of the first printed tone.

First Printed Tone (Preserve White): Preserves the paper white, however, small tonal values are immediately raised to the set levels producing a strong slope.

First Printed Tone (Minimal Tone): Produces a white that is printed with the set tonal value in all channels.

Printed Tone at 1 % (Proof): This setting defines the tone value to be achieved at 1% in proof direction of the profile. In separation direction of the profile, the setting Default is used (in contrast to other highlight settings).

Based on data: If the loaded measurement data contains enough data points in the highlights CoPrA also provides information about the start of the first printed tone (see screenshot). This information may be used as a guide value to assess the value that should be entered in the input field to the right.

Note: The information Based on data will only be displayed when one of the Highlight settings is selected from the drop-down menu and the data allows a different recognition of the first printed tone compared to the Default setting. Before using the value for profiling we suggest analyzing the data in ColorAnt.

 

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