Re: Setting up P900 for Direct to Plate methods using QTR
From what I can tell, ?platen gap isn’t all that critical - the plates and carriers are well below that thickness - 1.1mm I think. I believe this is just there in case the media is curled slightly and it prevents accidental head strikes. I think the more critical thing is to define the media thickness relatively accurately.?
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On Feb 28, 2025, at 10:57?PM, tex.4810 via groups.io <tex.4810@...> wrote:
Clay, 2.6 seems to be the max platen gap setting the 5370. Any thoughts on how to approximate your P900 DTP settings with this platen gap limitation?
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Re: Setting up P900 for Direct to Plate methods using QTR
Clay, 2.6 seems to be the max platen gap setting the 5370. Any thoughts on how to approximate your P900 DTP settings with this platen gap limitation?
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Re: Setting up P900 for Direct to Plate methods using QTR
Thanks Clay - really appreciate you sharing this info in an easy guide. Very useful! I don't have a P900 as yet, but I know it just around the corner!
Silvi
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Setting up P900 for Direct to Plate methods using QTR
Another PSA. I have wrestled with helping people set up their P900s for DTP use over the last couple of years. I think I have finally figured out a pretty solid workflow for getting this done. It has a number of steps, and is documented here:
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Re: P800 - Only Black Inks Laying Down
Why do you think it is only laying down black inks? Do the negs look different from before? The color inks in the profile are minuscule and only there to make sure some ink is going down all the lines in order to prevent clogs. They would not show up as any color as mixing those together in relatively equal amounts will produce a gray tone.
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On Feb 25, 2025, at 6:34?PM, DM Witman via groups.io <dmwitman@...> wrote:
Update: Thank you for all the suggestions. I've nuked, reinstalled, and checked permissions. All seems right to me.?
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Alan, here is one of the quad files. This is a case of it worked fine before the update, and now it doesn't
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<Trad_Cyanotype_Revere_Starter_40BD-LIN.quad>
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Re: P800 - Only Black Inks Laying Down
Update: Thank you for all the suggestions. I've nuked, reinstalled, and checked permissions. All seems right to me.?
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Alan, here is one of the quad files. This is a case of it worked fine before the update, and now it doesn't
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Re: P800 - Only Black Inks Laying Down
Attach the quad file please.?
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On Feb 25, 2025, at 11:41?AM, DM Witman via groups.io <dmwitman@...> wrote:
? Hello,
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Hoping for some insight/suggestions. This is in a school lab setting. Working with Print Tool and a P800 on a Mac Mini M1. IT forced another update, now to Sequioia 15.3.1. This resulted in the QTP800 printer no long showing up as an available printer. I uninstalled the P800 driver and Print Tool, and reinstalled. This was successful in terms of the printer being available. I reinstalled all of the quad files, and I remade the presets. All seemed fine. When printing digi negs, now the printer is only laying down black inks. I checked the quad files and those look as they should with some color inks. I restarted the machine again and all of the apps. No change, only laying down black inks.
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Any suggestions? (Besides telling IT to stop updating OS in the middle of the term.)
?
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Thanks,
DM
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Re: P800 - Only Black Inks Laying Down
I agree that permissions is a likely suspect.
By far the easiest and best way to repair permissions is to simply
re-run the Install-QTR package. This automatically corrects all the
permissions in the /Library/Printers/QTR/Quadtone folders (fixes both folders and .quad files).
Roy
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Re: P800 - Only Black Inks Laying Down
FWIW, when I run into stuff like this, I nuke (delete) all the .quad files for a particular printer in /Library/Printers/QTR/Quadtone and then do some spring cleaning in my installation folder to get rid of .quad files with names like P8xx-last-desperate-attempt-77.quad before double clicking the install command again. It sounds to me like there may be some cruft in the files in the /Library folders for this printer. You can delete these .quad files and they will re-install
Hope this helps.
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On Feb 25, 2025, at 12:39?PM, Christina Z. Anderson via groups.io <christinazanderson@...> wrote:
Did you check EVERY SINGLE folder in this order for read/write? /Library Printers QTR Quadtone quadP800-QTP or whatever you call it. Every single one. Last time I updated I had to read write every single folder. Because I “think” (but I’m not Roy) the Print-Tool is not accessing your profiles for some reason and printing an unprofiled neg even if the profile shows up in your dropdown menu. Other than that I have no clue but this has happened to me at least four times on 4 different computers with three different printers ad nauseam. Chris ? Christina Z. Anderson
Professor of Photography? Montana State University
Series Editor:? Newly revised? ? ? That was a glimmer of hope, as that is something I would have overlooked for sure. But, all the quads are "write & read".? Anything else? Uninstall again?
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Re: P800 - Only Black Inks Laying Down
Did you check EVERY SINGLE folder in this order for read/write?
/Library
Printers
QTR
Quadtone
quadP800-QTP or whatever you call it.
Every single one.
Last time I updated I had to read write every single folder.
Because I “think” (but I’m not Roy) the Print-Tool is not accessing your profiles for some reason and printing an unprofiled neg even if the profile shows up in your dropdown menu.
Other than that I have no clue but this has happened to me at least four times on 4 different computers with three different printers ad nauseam.
Chris
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Christina Z. Anderson
Professor of Photography?
Montana State University
Series Editor:
Newly revised?
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From:
QuadToneRIP@groups.io <QuadToneRIP@groups.io> on behalf of DM Witman via groups.io <dmwitman@...>
Date: Tuesday, February 25, 2025 at 10:34?AM
To: QuadToneRIP@groups.io <QuadToneRIP@groups.io>
Subject: Re: [QuadToneRIP] P800 - Only Black Inks Laying Down
That was a glimmer of hope, as that is something I would have overlooked for sure. But, all the quads are "write & read".?
Anything else? Uninstall again?
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Re: P800 - Only Black Inks Laying Down
Hi Chris,
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That was a glimmer of hope, as that is something I would have overlooked for sure. But, all the quads are "write & read".?
Anything else? Uninstall again?
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~DM
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Re: P800 - Only Black Inks Laying Down
Are you at work now? Do me a favor and right click on the quad you were using and see if it reverted to read only. That happened to me, and the result was very dense black ink negatives
as if Print-Tool was printing with no profile. I had to go and right click on every quad and change permissions to read/write in the school lab (which has stricter protocols).
Chris
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From:
QuadToneRIP@groups.io <QuadToneRIP@groups.io> on behalf of DM Witman via groups.io <dmwitman@...>
Date: Tuesday, February 25, 2025 at 9:41?AM
To: QuadToneRIP@groups.io <QuadToneRIP@groups.io>
Subject: [QuadToneRIP] P800 - Only Black Inks Laying Down
Hoping for some insight/suggestions. This is in a school lab setting. Working with Print Tool and a P800 on a Mac Mini M1. IT forced another update, now to Sequioia 15.3.1. This resulted in the QTP800 printer
no long showing up as an available printer. I uninstalled the P800 driver and Print Tool, and reinstalled. This was successful in terms of the printer being available. I reinstalled all of the quad files, and I remade the presets. All seemed fine. When printing
digi negs, now the printer is only laying down black inks. I checked the quad files and those look as they should with some color inks. I restarted the machine again and all of the apps. No change, only laying down black inks.
Any suggestions? (Besides telling IT to stop updating OS in the middle of the term.)
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P800 - Only Black Inks Laying Down
Hello,
?
Hoping for some insight/suggestions. This is in a school lab setting. Working with Print Tool and a P800 on a Mac Mini M1. IT forced another update, now to Sequioia 15.3.1. This resulted in the QTP800 printer no long showing up as an available printer. I uninstalled the P800 driver and Print Tool, and reinstalled. This was successful in terms of the printer being available. I reinstalled all of the quad files, and I remade the presets. All seemed fine. When printing digi negs, now the printer is only laying down black inks. I checked the quad files and those look as they should with some color inks. I restarted the machine again and all of the apps. No change, only laying down black inks.
?
Any suggestions? (Besides telling IT to stop updating OS in the middle of the term.)
?
?
Thanks,
DM
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Re: Revisiting Carbon 6/7/8 in 2024
When I bought this 7880 for $100, it had been in storage for around a decade. Ink in the lines had evaporated. Still had the original OEM cartridges from 2010 in it. Original owner had run about 250 posters through it, before upgrading to another printer.
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My investment (in CDN$)
$100 - Printer
$190 - Gloss Optimizer (4x500ml)
$160 - 7880 Refillable Cartridge Set
$150 - Expired ink from eBay
$50 - cleaning solution (1L)
$650 CDN (about 425-460 USD) and I've got this all working and loaded. On to building profile curves.
Many thanks to Paul Roark for his inspiration!!!?
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Re: Revisiting Carbon 6/7/8 in 2024
thanks Paul, that's actually remaining availability, I just replaced it. You'll see it's going down,. 24, 23, 22
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Re: Revisiting Carbon 6/7/8 in 2024
Your printer may not be able to clean itself because your Maintenance Take is full.
Paul
Spoke too soon. gave it another chance of cleaning solution on paper towel and laying it flat under the print head while moving the print head, and another liberal spray of cleaning solution over the parking areas. Followed by a power clean.? Now have it where it was supposed to be. Success.?
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Re: Revisiting Carbon 6/7/8 in 2024
Spoke too soon. gave it another chance of cleaning solution on paper towel and laying it flat under the print head while moving the print head, and another liberal spray of cleaning solution over the parking areas. Followed by a power clean. ?Now have it where it was supposed to be. Success.?
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Re: Revisiting Carbon 6/7/8 in 2024
Well, at this point, I've cleaned and checked everything. I'm suspecting that that area in the print head may not be usable. All is not lost. I still have 7 channels and can use this machine to print on Satin/Glossy and stick with my 7800 for matte paper. Or I move the combo gloss/matte to the 7800 and strip down the 7880 for parts.
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Re: Revisiting Carbon 6/7/8 in 2024
Good advice Don, I’ll try that next. Thank you for the link.
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Re: Revisiting Carbon 6/7/8 in 2024
Jeff
When I have seen this on Epson 3880, P800, P900, P5300, its usually not the lines nor the damper. Its usually dried crud ink that is floating around the capping station and the bottom of the print head.
This is how I clean these areas -?
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Have you done this cleaning already? If not, get same paper towels and some cleaning fluid (Pizoflush is what I use, but there are other concoctions you can mix by searching on the internet).
Don Nelson
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