BeauchampT
Well-known member
Ok colour management gurus - I'm feeling particularly ignorant today.
My plant is seeking to run to match ISO 12647. I've been noticing that I can never quite achieve my colour gamut needed for paper type we run (although our matches to proof are really decent). Then I looked more closely at the notes I had from the original help we got with implementation and reread the standard as well.
When we were originally trained on how press should implement this colour management, we were told to measure on a BLACK backing. It was explained that we would do this when printing both sides of sheet (somehow it eliminates any reading of print on other side of page???). So, this is what we do. We have a matt black backing on our colour console for all our readings. Never match the gamut required.
I looked at the numbers we in the ISO standard and noticed that there are target values for both WHITE and BLACK backing. So, I tried measuring the same press sheet on both types of backing - WHITE was perfect, BLACK was off (a delta E of 5 with my solid magenta patch).
What sort of backing should I be measuring on? Black or white?
My plant is seeking to run to match ISO 12647. I've been noticing that I can never quite achieve my colour gamut needed for paper type we run (although our matches to proof are really decent). Then I looked more closely at the notes I had from the original help we got with implementation and reread the standard as well.
When we were originally trained on how press should implement this colour management, we were told to measure on a BLACK backing. It was explained that we would do this when printing both sides of sheet (somehow it eliminates any reading of print on other side of page???). So, this is what we do. We have a matt black backing on our colour console for all our readings. Never match the gamut required.
I looked at the numbers we in the ISO standard and noticed that there are target values for both WHITE and BLACK backing. So, I tried measuring the same press sheet on both types of backing - WHITE was perfect, BLACK was off (a delta E of 5 with my solid magenta patch).
What sort of backing should I be measuring on? Black or white?