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?
/Tomas?
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Re: If it isn't one thing it is another
I have a text expander snippet for this because I have to answer it so often... The cause of all permissions problems is macOS updating and it reverting all the permissions that QuadToneRIP sets for the library/printers stuff.
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You need to reinstall QuadToneRIP from the downloadable install package from, http://www.quadtonerip.com/html/QTRdownload.html?
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After reinstalling QTR, run the install command for your printer(s), and then quit and relaunch PrintTool and it will all be solved.?
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Hope that helps,?
Richard Boutwell
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richardboutwell.com
bwmastery.com
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Re: If it isn't one thing it is another
Permissions are an ongoing issue. Some setups are for one personal computer and others
are for multiple people sharing printing -- like classes.
The default in QTR is sharing access and control of all the curves. This means read/write access to
all the folders and quad files under /Library/Printers/QTR/quadtone
The Install-QTR package automatically repairs/changes all access to red/write so this is the
easiest fix for permission issues. But of course this sets to read/write for everyone.
If you have a system where you'd only like everyone to have read-only access the commands
that Blayne shows would work -- but of course you need to run this after everything is setup.
You won't be able to modify anything anymore.
Roy
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Re: If it isn't one thing it is another
Ohhhh, crap! The commands sometimes don't display right through these emails, or on groups.io. The "escape" can stripped off the semicolon. They should really end in a backslash and then semicolon. Let's see if this works better. If you see two backslashes use only one.
sudo find /Library/Printers/QTR/quadtone -type d -exec chmod 555 {} \;
sudo find /Library/Printers/QTR/quadtone -type f -exec chmod 444 {} \;
Blayne Puklich Minneapolis, MN PGP Key ID: 0xC52CA6C1
- mailto:blayne at puklich.com
I'd explain it to you, but your brain would explode.
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On 31 Jan 2024, at 20:41, Blayne Puklich wrote:
Well, that's a shotgun-type approach that leaves everything in it's path writable by the world. Just be aware that's what it does. You may not want that.
I'd suggest this, a little more correct and will give the world read permission which is all it really needs:
sudo chmod -R 555 /Library/Printers/QTR/quadtone
Now, being a Unix admin from the olden days as they say, I typically do this, but remember I'm a certified nerd.
sudo find /Library/Printers/QTR/quadtone -type d -exec chmod 555 {} ;
sudo find /Library/Printers/QTR/quadtone -type f -exec chmod 444 {} ;
For those curious these two commands will find and then modify files of type directory first to be "open" to the world, then normal files. That's even a little more correct, but do whatever turns your crank!
Blayne Puklich Minneapolis, MN PGP Key ID: 0xC52CA6C1
- mailto:blayne at puklich.com
I'd explain it to you, but your brain would explode.
On 31 Jan 2024, at 17:59, Clay Harmon wrote:
My guess would be a permissions issue. I have a shortcut in the files section of the ?site that will fix it. Or type this:
sudo chmod -R 777 /Library/Printers/QTR/quadtone
in a terminal window and give it your administrator password
====================================
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:
Has anyone seen this message and have a fix.
All my students for the last week have been printing cyanotype negs with apparently NO profile (since the printing still happens in Print-Tool).
I thought I was nuts and that I was a horrible profile maker because their prints were way too contrasty but on my office P900 the negatives are awesome as they are at home.
Until I found out the real issue I thought well hell, maybe all Epson P900s are not created alike.
This has happened with some new security update.
It may be I have to right click on the QuadP900 folder and select read/write?
There’s a reason I store a bottle of bourbon in my office file cabinet….
Chris
?
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Re: If it isn't one thing it is another
Well, that's a shotgun-type approach that leaves everything in it's path writable by the world. Just be aware that's what it does. You may not want that.
I'd suggest this, a little more correct and will give the world read permission which is all it really needs:
sudo chmod -R 555 /Library/Printers/QTR/quadtone
Now, being a Unix admin from the olden days as they say, I typically do this, but remember I'm a certified nerd.
sudo find /Library/Printers/QTR/quadtone -type d -exec chmod 555 {} ;
sudo find /Library/Printers/QTR/quadtone -type f -exec chmod 444 {} ;
For those curious these two commands will find and then modify files of type directory first to be "open" to the world, then normal files. That's even a little more correct, but do whatever turns your crank!
Blayne Puklich Minneapolis, MN PGP Key ID: 0xC52CA6C1
- mailto:blayne at puklich.com
I'd explain it to you, but your brain would explode.
toggle quoted message
Show quoted text
On 31 Jan 2024, at 17:59, Clay Harmon wrote:
My guess would be a permissions issue. I have a shortcut in the files section of the ?site that will fix it. Or type this:
sudo chmod -R 777 /Library/Printers/QTR/quadtone
in a terminal window and give it your administrator password
====================================
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:
Has anyone seen this message and have a fix.
All my students for the last week have been printing cyanotype negs with apparently NO profile (since the printing still happens in Print-Tool).
I thought I was nuts and that I was a horrible profile maker because their prints were way too contrasty but on my office P900 the negatives are awesome as they are at home.
Until I found out the real issue I thought well hell, maybe all Epson P900s are not created alike.
This has happened with some new security update.
It may be I have to right click on the QuadP900 folder and select read/write?
There’s a reason I store a bottle of bourbon in my office file cabinet….
Chris
?
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Re: If it isn't one thing it is another
My guess would be a permissions issue. I have a shortcut in the files section of the ?site that will fix it. Or type this:
sudo chmod -R 777 /Library/Printers/QTR/quadtone
in a terminal window and give it your administrator password
====================================
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:
Has anyone seen this message and have a fix.
All my students for the last week have been printing cyanotype negs with apparently NO profile (since the printing still happens in Print-Tool).
I thought I was nuts and that I was a horrible profile maker because their prints were way too contrasty but on my office P900 the negatives are awesome as they are at home.
Until I found out the real issue I thought well hell, maybe all Epson P900s are not created alike.
This has happened with some new security update.
It may be I have to right click on the QuadP900 folder and select read/write?
There’s a reason I store a bottle of bourbon in my office file cabinet….
Chris
?
|
If it isn't one thing it is another
Has anyone seen this message and have a fix.
All my students for the last week have been printing cyanotype negs with apparently NO profile (since the printing still happens in Print-Tool).
I thought I was nuts and that I was a horrible profile maker because their prints were way too contrasty but on my office P900 the negatives are awesome as they are at home.
Until I found out the real issue I thought well hell, maybe all Epson P900s are not created alike.
This has happened with some new security update.
It may be I have to right click on the QuadP900 folder and select read/write?
There’s a reason I store a bottle of bourbon in my office file cabinet….
Chris
?
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Re: Increasing Desnity on Negatives with QTR and QCDN
I have uploaded the relevant quad files to the SC P800 folder in the files section here on the groups.io site.? This is an example of the PMF result 
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The following files and folders have been uploaded to the Files area of the [email protected] group.
By: Clay Harmon <w.clay.harmon@...>
Description:
Quad file for 7 layer Printmaker's Friend negative using Photo black ink and Print Tool set to output a negative. Negative exposed using a 365nm light.
The following files and folders have been uploaded to the Files area of the [email protected] group.
By: Clay Harmon <w.clay.harmon@...>
Description:
Palladium negative profile for Epson P800. Exposure using a 365nm light.
The following files and folders have been uploaded to the Files area of the [email protected] group.
By: Clay Harmon <w.clay.harmon@...>
Description:
Linearized matte black ink profile for making DTP plates using the JET
LSL43 SM plate material
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Re: Increasing Desnity on Negatives with QTR and QCDN
I am getting good results with PMF on my P800 using Photo Black. I’ll post the linearized profile when I get to the studio next.?
Clay ====================================
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:
This Xmas i have bought PrintMakers Friend. He recommends a negative of 2.4 but with my EpsonP800 with PhotoBlack Ink Printing the QTR calibration test i can get at 75% ink only 1.8-1.9 Density. And i would like to get 2.2-2.4. If i set to 80% the film doens't allow such amount of ink and i can't get finer details.
Do you get more density with Epson printer? Chaning to MB doens't affect only 3%
I use QTR with EpsonP800 and OEM inks. I linearize with Richard Boutwell software and with my I1Pro.
Thank You
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Increasing Desnity on Negatives with QTR and QCDN
This Xmas i have bought PrintMakers Friend. He recommends a negative of 2.4 but with my EpsonP800 with PhotoBlack Ink Printing the QTR calibration test i can get at 75% ink only 1.8-1.9 Density. And i would like to get 2.2-2.4. If i set to 80% the film doens't allow such amount of ink and i can't get finer details.
Do you get more density with Epson printer? Chaning to MB doens't affect only 3%
I use QTR with EpsonP800 and OEM inks. I linearize with Richard Boutwell software and with my I1Pro.
Thank You
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Did you tried differents paper feed adjustments ?
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Hi Dieter, Thank you for your answer. I am printing DTP. Using Toyobo-plates. These are horizontal lines. When I turn the image 90 degrees in PrintTool , the lines remain horizontal. So it has something to do with the printer or the software, I think.
Best regards, Eric Verstuurd vanaf mijn iPhone
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Op 31 jan 2024 om 15:36 heeft Dieter <daemen.dieter@...> het volgende geschreven:
?Hi Eric,
Based on your images I have the idea those are scans from BW negatives. Am I correct? I have bumped into similar artefacts with poorly scanned or processed images from clients (i.e. trying to get too much detail out of the shadows, scanning too dark or too bright and adjusting that in post-processing, ...).
The grain on those prints appears particularly sharp and I have the impression you have a few sharpening artefacts going on due to oversharpening. In my experience oversharpening can indeed lead to banding. You could try printing the same image without any sharpening applied to see if the banding persists.
Printing through QTR with dedicated BW inksets can yield such high fidelity that prints sometimes reveal issues that are very difficult to spot on a computer screen. Even more so if that screen is a laptop screen or an average desktop monitor.
Let me know if this helps.
Kind regards,
Dieter
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Hi Eric,
Based on your images I have the idea those are scans from BW negatives. Am I correct? I have bumped into similar artefacts with poorly scanned or processed images from clients (i.e. trying to get too much detail out of the shadows, scanning too dark or too bright and adjusting that in post-processing, ...).
The grain on those prints appears particularly sharp and I have the impression you have a few sharpening artefacts going on due to oversharpening. In my experience oversharpening can indeed lead to banding. You could try printing the same image without any sharpening applied to see if the banding persists.
Printing through QTR with dedicated BW inksets can yield such high fidelity that prints sometimes reveal issues that are very difficult to spot on a computer screen. Even more so if that screen is a laptop screen or an average desktop monitor.
Let me know if this helps.
Kind regards,
Dieter
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Re: Low resolition/“grainy” prints-negatives
What a strange issue. Seems to make more sense lately to have a computer dedicated solely to printing and not updating it until all bugs are worked out. I see and hear of so many people having issues because of updates and now other devices attached.?
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On Jan 31, 2024, at 5:40?AM, tomasmouckastudio@... wrote:
?I figured out, the issue was caused by the scanner connected while printing with QTR.?
once I disconnected the scanner and closed Silver Fast, the prints were fine.?
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Hi Tomas,
Thanks for your mail!
The thing is, I do DTP. I also narrowed the platen gap from Widest to Wide, but the horizontal lines remain.
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Hello Eric,
?I had the same issue with Epson SC-P6000.?
?I was using Tecco production SF140 film to print the negatives.?
?I assume the horizontal lines was caused by the substrate being to thin. 140gsm. I have experimented with different media type, creating my own media settings, but nothing helped.?
?I switched to Fomei Clear Film 180, which is 180gsm. Also set the media type to Premium Glossy Photo Paper 170 and Narrow platen gap, which solved the issue.?
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Hello Eric,
?I had the same issue with Epson SC-P6000.?
?I was using Tecco production SF140 film to print the negatives.?
?I assume the horizontal lines was caused by the substrate being to thin. 140gsm. I have experimented with different media type, creating my own media settings, but nothing helped.?
?I switched to Fomei Clear Film 180, which is 180gsm. Also set the media type to Premium Glossy Photo Paper 170 and Narrow platen gap, which solved the issue.?
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Re: Low resolition/“grainy” prints-negatives
I figured out, the issue was caused by the scanner connected while printing with QTR.?
once I disconnected the scanner and closed Silver Fast, the prints were fine.?
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Re: Revisiting Carbon 6/7/8 in 2024
PK can be used on any paper. MK, not so good on glossy. Dilutions use less ink, so if you use PK for that you'll have an inkset that you can use for any kind of paper if you have 100% PK and 100% MK positions in your printer with your custom dilutions. Super flexible because you can print on any paper finish. MK should also get you a denser black which would be more desirable instead of using PK for everything. That's roughly what I do but I include that toner I was talking about to shift the tone blue.
Blayne Puklich Minneapolis, MN PGP Key ID: 0xC52CA6C1
- mailto:blayne at puklich.com
I'd explain it to you, but your brain would explode.
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On 30 Jan 2024, at 16:49, Jeff Kew wrote:
thanks Walker, at a high level, what's the logic behind not diluting matte black ink? Ecomics of it, or quality?
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Re: Revisiting Carbon 6/7/8 in 2024
thanks Walker, at a high level, what's the logic behind not diluting matte black ink? Ecomics of it, or quality?
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Richard Boutwell
greg brophy