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Re: Revisiting Carbon 6/7/8 in 2024
开云体育Just for ideas, where Paul has his second 100% MK I've put a 6% PK dilution in place. Maybe that's too close to 9%, maybe not, but that's what I did. Blayne Puklich Minneapolis, MN PGP Key ID: 0xC52CA6C1
On 2 Feb 2024, at 9:38, Paul Roark wrote:
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Re: Horizontal lines
开云体育Thank you for answering!Just to be sure: I print DTP on Toyobo-plates using QTR and PrintTool. And for that you only use Matte Black isn’t it? The thing is, I only see it in the, let’s say, ?50-70% black parts. Eric ? ? ? ? de Liefde 16 ?1052MZ-Amsterdam ? ? ? ?@eric1levert
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Re: Revisiting Carbon 6/7/8 in 2024
Blayne Puklich <blayne@...> wrote:
Yes, those are the ingredients I buy by the liter from STS.? The mixing formula is shown at? . Note, again, however, that the dual MKs are only for Arches watercolor paper and not needed or useful for most people who should stick with inkjet paper. Also, be sure to go to the next page of the PDF for the dilution?ratio of the toner.? Being on a different page, that critical?step, if missed, with result in very blue prints.? (A mistake I once made.) Paul |
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Re: Revisiting Carbon 6/7/8 in 2024
开云体育Contact STS Inks down in FL. Shoot email to Joe. I’ll not post his email here but it’s pretty easy to deduce from what I just said.MK = wj1082 PK = wj1122 glop = wj824 Double-check those with Joe in case they’ve changed. --- Blayne Puklich ? ? ? ? ? ? Minneapolis, MN ? ? ? PGP Key ID: 0xC52CA6C1 * mailto:blayne at? ? ? ? ? ?I'd explain it to you, but your brain would explode On Feb 2, 2024, at 8:51?AM, hank.roark@... wrote:
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Re: Increasing Desnity on Negatives with QTR and QCDN
开云体育I got the printing time with a Stouffer’s 31-step, and then used that time to determine the correct maximum blocking density for my printer
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Re: DTP with Toyobo / Measles (Mottling) Issue
开云体育Hi Sayuri,Thanks very much for the info.? At this stage there are pro’s and con’s to using Torelief plates. They may get rid of the measles problem but also may have a highlight ( tonality) issue and are more expensive than the Toyobo plates. I assume the price did not include VAT ( sales tax)? As I no longer have an issue with measles and the suppliers of Toyobo are within easy reach of me I will pass on Torelief ( for now ) I would love to see your results though All the best
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Re: DTP with Toyobo / Measles (Mottling) Issue
Hi David,
I have finally received the pricing details from Dantex. The price for a sheet size WS .95 . = 215mm x 305mm
Is : ?10.48 plus surcharge of 5.5%
Plus delivery.
If you are interested in purchasing Torelief plates from Dantex, Kevin, the sales representative, will?assist you. ? |
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Re: Increasing Desnity on Negatives with QTR and QCDN
I determine exposure using a Stouffer TP4x5-31. On Thu, Feb 1, 2024, 11:34?PM Carlos Lopez <carlospardines1@...> wrote: Did you calibrate your times with stouffer 31 step or did you print a 31 stepwedge and calibrate with It? |
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Re: Horizontal lines
Eric,
Looking at your original images the bands look approximately 1inch apart which is the head size. So my guess is that you are seeing the variation of the inkjets -- probably normal manufacturing tolerances. The close bands at the top of a print are likely because the reads have to make closer passes over the paper there. The way this is normally avoided (actually hidden) is using lots of different jets scattered seemingly randomly. The interleaving of passes helps a lot but also using more different inks helps a lot. When you mentioned using only one ink this suggests to me you are using lots less different jets. You've said the Epson driver is better and its because it uses lots of different inks -- grays as well as all the colors. This gives smoother results but may not be the inks you want. Of course this is the advantage of QTR -- you get control of the inks. But you still have to use several inks to hide banding. I don't do negatives in general but most curve-profiles I've seen use many inks with the same curve shape. For instance Y is ordinarily not very dense but to UV light it is quite dense. So try adding inks -- reduce MK and increase others. You ought to have tested the different inks for UV density previously. Roy |
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Re: Increasing Desnity on Negatives with QTR and QCDN
I found the same thing about the dMax. However, it printed perfectly when I followed Calvin’s instructions for the 7 layer monochrome. I arrived at this by actually making a test with layer one to find the maximum blocking density. I think the spectral density is much higher than the dMax you get using a densitometer. My Heiland TR-2 shows the same results ~ 1.6, yet it prints as if it is closer to that 2.4. My lights are 365nm LEDs...
==================================== I have a ridiculous number of email accounts for lots of reasons. This email is the best one to use for anything that is not business-related: On Feb 1, 2024 at 1:57:40?PM, Carlos Lopez <carlospardines1@...> wrote:
Hello, Clay. I have printed a step wedge with your calibration file and the Dmax is 1.60 i can't get more than that. I suspect that my film can't handle more ink. Or maybe your file was at 50% curve. I'm using a film (140 miicrons) from a dealer here in Spain. It's not Fixxons or Pictorico. But never had any problems with Cyanotype or Gum. |
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Re: Increasing Desnity on Negatives with QTR and QCDN
Hello, Clay. I have printed a step wedge with your calibration file and the Dmax is 1.60 i can't get more than that. I suspect that my film can't handle more ink. Or maybe your file was at 50% curve. I'm using a film (140 miicrons) from a dealer here in Spain. It's not Fixxons or Pictorico. But never had any problems with Cyanotype or Gum.
Has anyone tested it with Fomei film ? Thank you in advance |
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Re: Revisiting Carbon 6/7/8 in 2024
This is the carbon approach I've used for years now: The dual MK in this inkset is only for Arches watercolor paper, which, frankly, I have not used in a long time.?? That said, the image on my wall? --? ? --? ?is a100% carbon, neutral-appearing print on Arches that will outlive us by multiples.? (But who, other than museums, really cares.) PK, MK, and dilutions of PK will do satin (what I prefer), glossy and matte papers.? ? I do use a bluish "toner" that is a blend of Canon blue and cyan inks to?offset the yellowish tone of carbon.? I think it is the most stable we can mix from commonly available pigments that are compatible with Epson inkjet printers.? Paul |
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Re: Horizontal lines
Okay - scratch that as a possible cause! I’m stumped.
==================================== I have a ridiculous number of email accounts for lots of reasons. This email is the best one to use for anything that is not business-related: On Feb 1, 2024 at 7:29:45?AM, Eric Levert <eric1levert@...> wrote:
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Re: If it isn't one thing it is another
开云体育Thanks, all. All your answers will give my tech something to work with. ? Mind you, multiple times since being QTR-centric I have had to go in and change rewrite permissions on file folders but in that case it was apparent because a message would pop up telling me access was denied so I had a prompt I needed to do so. ? This is the first time I have seen the computers in the lab go ahead and print unprofiled negatives with no pop up message. The message was hidden in the print center and the only way I knew something was quite wrong was printing a negative from my office P900 on the same sheet of Pictorico as the lab P900s and that showed the radical difference. Way high contrast, not much detail in shadows, highlights uber black. ? I made two assumptions at first, one that all P900s were just not the same and I would have to make profiles for three separate P900s; second I must have made crummy profiles. It didn’t occur to me that between Print-Tool and the P900 that it would still print. ? This is all with a new security update, Ventura 14.2. 1, on Macs with an Apple M1 chip (I think I read that all right). ? Chris ? PS that banding issue occurs with our printers, too. If the students have the negative no larger than 9.5 inches longest side and start the negative about an inch down on the top edge (which comes through the printer first) it tends to alleviate the type of banding that happens on the top edge. I remember someone on the list suggesting a fix to cut and paste a strip of the image first and then start the image later, too, so all the banding happened on the cut and paste, and then cut that off. ? ? ? From:
[email protected] <[email protected]> on behalf of Richard Boutwell <richard@...> I have a text expander snippet for this because I have to answer it so often... ? You need to reinstall QuadToneRIP from the downloadable install package from, http://www.quadtonerip.com/html/QTRdownload.html? ? After reinstalling QTR, run the install command for your printer(s), and then quit and relaunch PrintTool and it will all be solved.? ? Hope that helps,? Richard Boutwell ? richardboutwell.com bwmastery.com ? |
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Re: Horizontal lines
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Op 1 feb 2024 om 12:56 heeft Clay Harmon <w.clay.harmon@...> het volgende geschreven:
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Re: Horizontal lines
开云体育Question: does your DTP profile only use one ink? You mention three different print heads in your post.?Unless you have a custom ink setup, you really should only be using matte black ink in a single ink profile. Clay On Feb 1, 2024, at 2:56?AM, Tomas Holmqvist <tomas@...> wrote:
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Re: Horizontal lines
Hello Frankie and Eric
I have tried different media settings and created my own? media settings for DTP and for film. The horizontal lines still appear, suspect it must be the QTR software as the lines do not appear with Mirage or Epson's driver with the same picture. Apparently three different print heads are used and QTR may not be able to control which one is used for which image. It can cause different results for different images, for me with SC p 7000 and DTP. Anyone know how it is controlled? |
John Isner