Dotgain compensation
- Thread starter sornchai
- Start date
Martin Mueller
Member
- Joined
- 2019
- Posts
- 51
- Geo
- Essen/Germany
Hi sornchai,
ICC profiles do not contain dot gain curves for printing processes, but rather printer linearizations of the proof printer and a defined "ideal color space" (G7, FOGRA39, etc.) for the printing process.
Dot gain during printing must be determined using a "linear printing plate set" and is stored in the CtP plate setter RIP software to be taken into account during plate exposure.
ICC profiles do not contain dot gain curves for printing processes, but rather printer linearizations of the proof printer and a defined "ideal color space" (G7, FOGRA39, etc.) for the printing process.
Dot gain during printing must be determined using a "linear printing plate set" and is stored in the CtP plate setter RIP software to be taken into account during plate exposure.
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Biggs
Senior Member
- Joined
- 2017
- Posts
- 252
- Geo
- New Jersey
Martin is generally correct, just to add to the above in the event you're printing digitally. Your digital press maybe have a calibration process which would be similar to the linearization mentioned above (or below, i forget how the thread works).
This process will measure your individual separations with tints from 0-100, usually in a random grid across the sheet, if you use a G7 method you'll see both your primaries and shades of grey across the sheet in a similar fashion.
Between this and your substrate calibrations, you will be accounting for dotgain.
In fact, the substrate calibrations should show a set of curves afterwards. one set being your target, and the other, what was measured.
This process will measure your individual separations with tints from 0-100, usually in a random grid across the sheet, if you use a G7 method you'll see both your primaries and shades of grey across the sheet in a similar fashion.
Between this and your substrate calibrations, you will be accounting for dotgain.
In fact, the substrate calibrations should show a set of curves afterwards. one set being your target, and the other, what was measured.
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