David, I believe the curves are showing you the percentages of each ink as it is brought into play along the light to dark scale. If you matched everything except the yellow limit to the black ink I think it should show both curves to be the same except the yellow as a lesser relative percentage. I haven't done this so I may very well be wrong on it. If so, perhaps someone reading this who knows better will pipe up and speak truth. I have used toner inks in a similar fashion when I wanted them to be involved all along the black scale and it seemed to work. OK. I assumed at the beginning that you had reason to be trying QTR so I hadn't given much thought to other options until receiving the e'mail. Regards, Duane --- In QuadtoneRIP@yahoogroups.com, "David" <dkfreed@...> wrote: > > Thanks again Duane. > > Yes, I see the check-off now. Another question: when I hit the "create > curve" button found in the Curve Creation tool, it brings up a > graphic, scaled 0-100 going both up/down and across, with lines > plotted for the ink colors. What is this showing me? > > Regarding the gentlemen's email, I know that this should be easier, > but there are issues with using the Epson R2400 printer with its > default driver for this task: 1) the black inks have trouble blocking > UV light; 2) the printer has no true "black only" mode; 3)I can't get > it to print at a lower DPI (ideally 360 or 720 DPI) to get the > dot/grain pattern I need; and 4) the matte black ink has higher > opacity, but by itself doesn't adhere well to most quality > transparency films. > > So, I'm using QTR to both control the inks and the printer resolution. > > Yes, I've been fooling at this for far to long, and if I don't get > results soon, I may have to break down and buy a second printer such > as the Epson 3000, which does a much better job at this. > > Best, David > > > --- In QuadtoneRIP@yahoogroups.com, "dlruckus" <dlruckus@> wrote: > > > > Hi David. In QTR you have the option of matching the curve generated > > for an ink with the curve from another ink in your description. It's > > one of the check-offs in the Gui version. > > A gentleman e'mailed me > > suggesting that he has been using the method for many years to make > > etching transparencies with black only. He said we were making life > > too difficult. Based on your latest e'mail I'm inclined to agree;) >
Message
Re: help needed in creating unusual curve
2008-04-25 by dlruckus
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