QTR-Quadtone RIP

Bo,

Because you are using the white inks at 100% ink limits, you do NOT have to do anything in the gray and toner tabs. What you have right now is fine.

Sorry I cannot help with the color (CMYK) printing. Can you dedicate a second printer for that?

Shilesh

--- In QuadtoneRIP@yahoogroups.com, "Partus, Inc." <internetsales@...> wrote:
>
> Hi and thank you guys so much for replay. Shilesh that's exactly what I
> needed as far as white ink. Is there something I have to do with gray ,
> tonner and tonner 2 tabs? Right now I have setup for gray tab: highlight 10,
> shadow 10, overlap 100 and gamma 1. Tonner and tonner 2 settings are
> highlight 10, shadow 10 and gamma 1?
> 
> Walker Blackwell I would really appreciate if you can explain a little
> simpler since I am still not that handy with QTR. If this would work I will
> be more than happy to send you guys some T-shirts J
> 
> Best regards
> 
> Bo
> 
>  
> 
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of shileshjani
> Sent: Sunday, January 24, 2010 12:23 AM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] Re: Need help please!!!!
> 
>  
> 
>   
> 
> OK. Let's break this into two parts; I am surmising from Bo's initial
> message that he intends to print with two passes (1) pure white with as much
> ink as he can lay down, and (2) CMYK color image.
> 
> (1) with QTR is easy enough. If you dedicate Lb (more commonly called LK),
> LC, and LM with white ink, and want to fire them at 100% each. Here is what
> I would do. Create a curve setup file (qidf) with LK as gray, 100% density,
> 100% ink limit. Then setup LM, and LC as "copy curve from LK". Create the
> profile. No need to linearize. Now when you print a pure black image through
> QTR with this curve, you will be laying down the white ink in LK, LM, and LC
> each at 100% ink limits (total 300% white).
> 
> (2) As far as I know, there is no way to do the color print from QTR. But, I
> am eager to learn (although have no real use for it). A more full-featured
> RIP can certainly allow you to build profiles that utilize only CMYK.
> 
> Shilesh
> 
> --- In QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP%40yahoogroups.com> ,
> Walker Blackwell <forums@> wrote:
> >
> > Why wouldn't this work with QTR? Simply take a default environment 
> > that uses K and LK (use two white inks-with similar density relation 
> > to the Ks in Epson K2-instead of two black inks if possible, not three 
> > white inks.) Then invert the 21 step linearization target and print. 
> > Then you'll have to somehow invert the density values of each swatch 
> > read against the central mean line between Darkest and Lightest patch 
> > before you build the linearization for the white underbase profile. 
> > You can batch this with a formula in Excel. *I can't quite get my head 
> > around it until I would be sitting down and doing it, but this is a 
> > starting point at least.
> > 
> > This will give you a linearized white environment. Then take the third 
> > channel you were going to use for White and put nothing in it, an 
> > empty cartridge (You will then tell your software that this is your K 
> > channel even though it isn't printing anything). Then you simply build 
> > a profile by printing a color swatch from Gutenprint using straight 
> > CMYK (Lc Lm can probably not be there just fine). This gives you one 
> > more channel to play with in case you ruin a channel with weird ink. 
> > Just build a 300 patch profile (at max!) or so for the CMYK. Nothing 
> > fancy. It will get very tricky to build the tables for the K vs CMY 
> > on this ICC because they will be printed from different programs . . . 
> > But, you should be able to apply the K part of the CMYK icc to the 
> > white print and the CMY parts to the color print easy enough . . . 
> > Will take a bit of tinkering I'm sure.
> > 
> > Should be good to go after this. Happy hacking,
> > Walker
> > 
> > 
> > 
> > On Jan 23, 2010, at 4:26 PM, spopoviccacak wrote:
> > 
> > > I was wondering if any of you guys can help me. I had question in 
> > > the past and this board was more than helpfull. I have epson 2200 
> > > printer that I have converted to flat bad printer. It works great 
> > > and if anybody needs info I can help you with it. I am planing to 
> > > use it for printing on T-shirts. Only problem I have is printing on 
> > > dark shirts. I can use QTR and setup LB, Lm and Lc chanels to print 
> > > white underbase. I have setup curves Lb 100% ink limit gray ink, Lm 
> > > 100% ink limit tonner and Lc 100% ink limit tonner2. Since I like to 
> > > put as much ink as possible on the shirt should I setup Lc and Lm 
> > > also to be gray ink or live it tonner and tonner2?
> > > Most important question is: Since i would be using Lb, Lc and Lm for 
> > > white ink is there any way I can have my CMYK chanels to print image 
> > > without Lb, Lc and Lm. I know there are rip softwares out there but 
> > > they are so expensive. Is it posible to create profile for epson 
> > > 2200 that only uses CMYK channels for color images and profile for 
> > > Lb, Lc and Lm so I can for example use photoshop to print white 
> > > underbase and than switch profile and print color image on top of 
> > > underbase. I am searching for almost two months with no sucess to 
> > > either find some free rip software to do this or driver. If you guys 
> > > have any sugestions please help me.
> > > Best regards
> > > Bo
> > >
> > >
> > > 
> > 
> > Walker Blackwell
> > 802.821.4451
> > www.walkerblackwell.com
> > aim: greendirtblues
> > wblackwell@
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
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