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Title: PRO-100 Odd reversal at bottom of step chart Post by: CHoffman on February 06, 2024, 09:23:39 PM I was printing a color chart and step tablet and noticed that I couldn't see a difference between the last two dark steps of the tablet. When I looked closer under very bright illumination, the last step was actually slightly lighter then the next step. The RGB values were something like zero and maybe 8-12. Shining an LED flashlight through the paper, there's definitely less ink on the last step (that should be the darkest.) Paper is Red River UltraPro Gloss II with their profile (I think). Is this a profile issue or is there something else I should look at? It doesn't affect images because we're talking the blackest of the blacks, but it's also not the way things should be.
Title: Re: PRO-100 Odd reversal at bottom of step chart Post by: admin on February 06, 2024, 09:48:04 PM I wouldn't worry about distinguishing the last two steps on a grayscale. They often require a lot of light to see, as you discovered. It doesn't mean there is anything wrong with the profile.
Regards, Mike Title: Re: PRO-100 Odd reversal at bottom of step chart Post by: CHoffman on February 07, 2024, 06:18:36 PM Thanks! I know it doesn't matter but it will probably bug me until I figure it out. One speculation is that the printer might avoid making a mess by limiting ink flow whenever it sees an RGB value of zero.
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