Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-25 by Ernst Dinkla
... Roy, I have learned a thing or two along the thread. There s less to be alarmed about than I thought at the beginning. At least I know better what
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RE: [QuadtoneRIP] UT7 - Apply Roark or Staver curves or both?
2005-08-25 by Daniel Staver
Hi Dave, With QTR you don t apply any of Paul Roark s curves. You just send a plain grayscale TIFF file. Paul s curves are for printing with the Epson driver
UT7 - Apply Roark or Staver curves or both?
2005-08-25 by dave_in_gva
Hi there, First time poster here and just cutting my teeth on QTR. Thanks to Roy Harrington and all those who have brought this to the B&W printing community.
Re: R1800 error - "Can't find escp2-R1800" ?
2005-08-25 by Richard Cooke
Never mind - I downloaded the latest Beta and it looks like it s working now.
R1800 error - "Can't find escp2-R1800" ?
2005-08-25 by Richard Cooke
Hi All, Can anybody shed some light on what this error means and what I can do to fix it? For what s it worth - I m able to print via the Epson driver and
Any curves available for Permajet MonoChrome Pro CIS and Permajet papers
2005-08-25 by Jamie
Hi everybody, Is anybody willing to share a few QTR curves (windows) for 1290 using Permajet MonoChrome Pro CIS and Permajet papers, just to get me started,
RE: [QuadtoneRIP] 2400 ILFORD PROFILES
2005-08-24 by Stephen Billard
Open them in the Curve Creator part of the application and press the Create Curve button. -Stephen www.sbillard.org/Stephen ... From:
Re: [QuadtoneRIP] 2400 ILFORD PROFILES
2005-08-24 by Carl Schofield
Peter, The profiles are just text files and they will work with a PC, but I don t know what the PC procedure is for converting these curve descriptor text
2400 ILFORD PROFILES
2005-08-24 by Peter Mc Mahon
Carl, thanks for your reply, thought they might be Mac, shame. Yes my typo error Epson should have read Ilford. regards, Peter. Message: 8 Date: Wed, 24 Aug
Re: QTR 51-step linearisation2
2005-08-24 by Roy Harrington
... everything ... I think you are assuming that weaving is a bit more magic than it really is. On say the 2200 in one pass the head puts down a dot up to
Re: QTR 51-step linearisation2
2005-08-24 by Roy Harrington
... The quad setup was not mine so I don t have all the details. It was for a MIS FS inkset (same densities as piezotones). By just looking at the numbers the
Re: [QuadtoneRIP] 2400 PROFILES
2005-08-24 by Carl Schofield
Peter, The profiles were made using a Mac. I can t advise how to use them with a PC, but PC users on this forum may be able to help. Note also that they are
Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-24 by Ernst Dinkla
... For the K7 it has even more mixing than I expected. What is the overlap number you use to get the quad result below and for which printer was it used ?
Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-24 by Ernst Dinkla
... The weaving of more heads certainly will help in smoother patterns. Less nozzles per head can be compensated by more passes and with that speed sacrifice
2400 PROFILES
2005-08-24 by Peter Mc Mahon
Carl Schofield, Carl, I have recently set up my 2400 printer and have just downloaded your QTR profiles for ESP using windows. I tried one of your sepia and
Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-23 by Roy Harrington
... Here s a couple of examples of what partitioning looks like for 2, 4, and 7 grays. They are crude text graphs but show that at all times there are 2 or 3
Re: QTR 51-step linearisation2
2005-08-23 by Roy Harrington
Hi Olivier, I think the Epson article is just trying to help people who think in LPI to understand comparisons. I don t believe that any of the inkjet drivers
Re: QTR 51-step linearisation2
2005-08-23 by Roy Harrington
... I can t see number of nozzles having any effect. The only difference between say the 2200 w/96 nozzles and R2400 w/180 nozzles is that the head is larger
Re: QTR 51-step linearisation2
2005-08-23 by Tyler Boley
... middle ... like ... the ... I think I see what you are doing. Similar setups could be put together with some creativity with SP, but the main tool allowing
Re: QTR 51-step linearisation2
2005-08-23 by Olivier
I would like to add/inquire about another factor in the smoothness/banding issue. In a technical article from Epson, the company claims : Halftone printing
Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-23 by Ernst Dinkla
... With some printers that have few nozzles per head it may be worth it. For example the C86 and similar ones. For BO printing or a semi BO with one lighter
Re: Relative Percentage Formula
2005-08-23 by Tom Husband
OK. Thanks Tom and Roy. It s clearer now. Not crystal clear but I get the gist of it. I m sure it ll make sense after I do it a few times. Now I just need
Re: Relative Percentage Formula
2005-08-22 by Roy Harrington
... The idea is called interpolation. In the example: we are looking for is what would match 1.29 (the 100% light-black) so in the black ramp we have: patch
RE: [QuadtoneRIP] Relative Percentage Formula
2005-08-22 by Tom Moore
Tom Here s an improved explanation that I provided to another confused curve maker. Perhaps the math is less obvious than my User Guide suggests. ... The
Relative Percentage Formula
2005-08-22 by Tom Husband
I m struggling with the math required to come up with the percentages of black ink relative to light black. On page 14 of the User Guide it says to find the
Re: QTR 51-step linearisation2
2005-08-22 by Roy Harrington
... partitioned series, ... more ... too short ... There s certainly lots of ways to make curves for the inkset. A 7-way partition is probably the most
Re: QTR 51-step linearisation
2005-08-22 by Roy Harrington
John, That s basically correct but when I did the 2200 I found the biggest dot outputing too much ink so I ended up using just the 2 smaller sizes. The
RE: [QuadtoneRIP] Re: QTR 51-step linearisation
2005-08-22 by John Moody
Roy, I thought the 2-bit VSD mode had three drop sizes? The bits would be no-dot, 00, then 01, 10, and 11, right? It appears the relative drop size ratio is
Re: [QuadtoneRIP] Re: QTR 51-step linearisation2
2005-08-22 by Ernst Dinkla
... I ve used a quad setup on the 9000 that had the Eboni black + the middle grey ink in the Mm channels and was linearised like that and in the Cc channels,
Ink level error
2005-08-22 by ghillje2002
I just started using the quadblack system from mediastreet for my Epson R200. Prints look great so far, except today, all of a sudden, the red light
RE: [QuadtoneRIP] Image Printing The Wrong Size in QTR
2005-08-22 by Stephen Billard
When you place the mouse over the image, what size is shown in the hint? If you click the right mouse button, you are given the opportunity to size the width
Image Printing The Wrong Size in QTR
2005-08-21 by Robert Byers
I am using QTR vr. 2.2.4 in a PC with XP Pro. When I bring my image into QTR to print the width of my image is 8 inches. I am using a letter size paper to
Re: QTR 51-step linearisation
2005-08-21 by Tyler Boley
... Are you speaking of using different density K inks in parallel rather than partitioned series, or some combination of the two? We discussed this once
Re: [QuadtoneRIP] Re: QTR 51-step linearisation
2005-08-21 by Ernst Dinkla
... Which to me means that the K7 inkset is already stretching the ink partitioning too far. Better linearisation of the droplet transfer points should
Re: [QuadtoneRIP] Re: QTR 51-step linearisation
2005-08-21 by Ernst Dinkla
... I thought that I described that in similar words. ... Whether it exactly divides up to equal linearisation points per channel doesn t matter much. But if
Re: QTR 51-step linearisation
2005-08-21 by Tyler Boley
... That s certainly what I m seeing here. Of course once again Epson seems to able to utilize their screening, dithering, ramping dots sizes, etc to best
Re: QTR 51-step linearisation
2005-08-21 by Roy Harrington
... From what I ve gathered so far the transitions between dropsizes is easily as crucial as the transitions between inks. Unless both are done smoothly as
Re: QTR 51-step linearisation
2005-08-21 by Roy Harrington
... The 7 inks for K7 worked just fine. The partitioning code has been the same since day one. I thought about more levels of linearization but I d probably
Re: QTR 51-step linearisation
2005-08-20 by john dean
What I d really like... not vareiable, but to have different dots sizes available in different inks. For example- Give me the smallest size, particularly in
Re: QTR 51-step linearisation
2005-08-20 by Tyler Boley
... which has ... my smaller ... in their more ... Yes! Seeing that here too... Basically, with the x600s and SP, variable dot can t be linearized with over
Re: QTR 51-step linearisation
2005-08-20 by Roy Harrington
... Interesting comments. I hadn t thought to compare the number of steps with the number of ink partitions. It probably depends somewhat on the method used
Re: QTR 51-step linearisation
2005-08-20 by Tyler Boley
... snip... ... build ... actually ... that ... My impression of the process is a bit different, correct me if I m worng. Individual ink components of a color,
Re: [QuadtoneRIP] Digest Number 134
2005-08-20 by Andreas Altenmüller
Jon, you could publish the LAB data of a printed stepwedge, so everyone would know what can be expected from K7. Andreas
Re: R1800 Newbie
2005-08-20 by dick_barbour
... Alex, I can successfully print with QTR using the R1800 setting with the beta version. It does a fairly good job in spite of having only one black ink. The
Re: [QuadtoneRIP] Re: QTR 51-step linearisation
2005-08-20 by Ernst Dinkla
... That s what I expected to be the cause. ... The targets you mention are the ICC profiling targets that usually build on linearised inkchannels.
C86 Bad Nozzle Check Follow Up
2005-08-20 by Scott McLoughlin
I had banding in deep shadows. Nozzle check was quite bad for black. Did a cleaning cycle, waited overnight and no change. Status monitor showed about 25-30%
Sotf-proofing
2005-08-20 by Olivier
Hi Roy, I d like confirmation on the usage of the soft-proofing with the QTR- ICC : when you soft-proof on PS only media white is appearing, there s no shift
R1800 Newbie
2005-08-20 by adydula
Hello, I tried the Beta code and could not get it to print with my R1800. I keep getting a I/O 32 error message. I tried both firewire and usb connections to
Re: QTR 51-step linearisation
2005-08-19 by Roy Harrington
... The Linearization does work with 51 steps but since the step values are closer its a little more sensitive to lack of separation betweem the steps. For the
Re: QT and Inkjetmall K6 inks
2005-08-19 by john dean
Makes sense to me as long as the dmax is about the same as the selenium tone set I will probably go for it. Thanks, John ... as we go for a sample ... is dMax