Because if they instead select Photoshop manages colours then they also have to select a profile, and what would the average user then do? A QTR user may have created an ICC for ABW that they could use, but that's not typical, and not all QTR users would want to do that anyway. You can select the null conversion trick (e.g. AdobeRGB -> AdobeRGB), but Photoshop then gives you this scary warning that would put the typical user off, even though the null conversion still works, last I tried it. Or you can fool PS by assigning sRGB, but that's not something the average user would do either.
So although there are little known workarounds to this little known problem, because they're all little known it remains an issue in Windows.
Re ACPU, the Windows version is broken, in that no matter what margins you use, it always prints with zero top and left margins. So it's useless for image printing, unless you happen to want zero margins. Does anyone have a working version in Windows or are they all broken like this?
[The relevance of all this to a QTR forum is that there is some mention of QTR-generated ICCs.]
---In QuadtoneRIP@yahoogroups.com, <info@...> wrote :
Paul (Lowry) You did not get lost, I did, sorry.
You are right, everything concerning this secret conversion would only apply to MAC users who must select “printer manages colour” in order to have access to the ABW mode.