Re: Increasing Desnity on Negatives with QTR and QCDN
Did you calibrate your times with stouffer 31 step or did you print a 31 stepwedge and calibrate with It?
I mean to get the printing times. In calvins guide he finds time with stouffer31.
Thank you
|
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
|
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:
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
|
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
|
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
|
Re: Revisiting Carbon 6/7/8 in 2024
my cartridges are super low and it's time to prep a new fill, which is why I'm looking to try a new configuration. How have you configured your cart positions?
|
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:
Hi Clay, I only use Matte Black ink. Eric
Verstuurd vanaf mijn iPhone Op 1 feb 2024 om 12:56 heeft Clay Harmon <w.clay.harmon@...> het volgende geschreven:
? 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:
?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?
|
Re: If it isn't one thing it is another
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.
?
?
?
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.
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.?
|
Hi Clay, I only use Matte Black ink. Eric
Verstuurd vanaf mijn iPhone
toggle quoted message
Show quoted text
Op 1 feb 2024 om 12:56 heeft Clay Harmon <w.clay.harmon@...> het volgende geschreven:
? 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:
?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?
|
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.
toggle quoted message
Show quoted text
On Feb 1, 2024, at 2:56?AM, Tomas Holmqvist <tomas@...> wrote:
?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?
|
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?
|
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.
?
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
?
|
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
|
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.
toggle quoted message
Show quoted text
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
?
|
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
?
|
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
?
|
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 
|
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
|
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
|
Richard Boutwell