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Hi folks – this is my first post.? I’m just now learning DTP photogravure and platinum palladium using digital negatives.? I’m working with (against) an Epson P900 with updated firmware via QTR with Print Tool as a front end and Piezography P900-Pro.? Quad files are from the two classes I took on these processes.? I’m in the final steps of setting up a home lab starting with DTP and heading to PtPd as soon as Bostick and Sullivan works through a chemical backorder.
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My prints to DTP are not centering, even though all the various settings seem to be ok.? I’m mounting a Tyobo KM43 plate (8 1/4" x 11 3/4") onto a 12x16 poster board.??After two days of swearing like a 19th century sailor I got that to work consistently on the P900.? Both the physical plate and the image are centered on the carrier board.? If I print a PDF from QTR I get an image that is correct (I've attached a copy of that.)?
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When printing to the plate however the image offsets, printing correctly along the 10” side but with a 2 5/8” bottom margin instead of the nearly edge to edge print I’d expect.? The image is somehow cropped at the top – there is no overprinting onto the carrier, just missing image space.? So for an 8x10 image I’m getting about 5.5x10.?
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The printer is set up as QuadP900-Pro Bonjour and is connected by USB.? QTR mode is 8 bit (the file is 16 bit tif), curve 1 is a custom quad file from a class, paper feed is front poster board, res is 1440 and speed is unidirectional.? On print tool everything is centered and sized correctly.? Management is set to Print-Tool Managed.?
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The images attached are a PDF output directly from Print Tool and a terrible iPhone photo of the plate after printing.?
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Super frustrated.? Any advice is warmly welcomed. 
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Hi Steve,
Not familiar with DTP but it doesn't seems to be a software issue for me. I suppose it is related to the printer sensor that check the paper. I don't use the P900 so other may have a more precise answer about that on this specific printer.
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I don't think the hammer will help you on this one :-D
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You are probably already doing this, but you need to make sure you have a custom media type defined and downloaded to your printer that has a 12 x 16 inch size. You have to have the same media size picked on the printer’s control panel as you have in Print Tool. Any mismatch will print misaligned. IOW, the software will not override the media size selected on the front of the printer.
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On Oct 17, 2024, at 12:12?PM, altstephenrudy via groups.io <altstephenrudy@...> wrote:
Hi folks – this is my first post.? I’m just now learning DTP photogravure and platinum palladium using digital negatives.? I’m working with (against) an Epson P900 with updated firmware via QTR with Print Tool as a front end and Piezography P900-Pro.? Quad files are from the two classes I took on these processes.? I’m in the final steps of setting up a home lab starting with DTP and heading to PtPd as soon as Bostick and Sullivan works through a chemical backorder. ? My prints to DTP are not centering, even though all the various settings seem to be ok.? I’m mounting a Tyobo KM43 plate (8 1/4" x 11 3/4") onto a 12x16 poster board.??After two days of swearing like a 19th century sailor I got that to work consistently on the P900.? Both the physical plate and the image are centered on the carrier board.? If I print a PDF from QTR I get an image that is correct (I've attached a copy of that.)? ? When printing to the plate however the image offsets, printing correctly along the 10” side but with a 2 5/8” bottom margin instead of the nearly edge to edge print I’d expect.? The image is somehow cropped at the top – there is no overprinting onto the carrier, just missing image space.? So for an 8x10 image I’m getting about 5.5x10.? ? The printer is set up as QuadP900-Pro Bonjour and is connected by USB.? QTR mode is 8 bit (the file is 16 bit tif), curve 1 is a custom quad file from a class, paper feed is front poster board, res is 1440 and speed is unidirectional.? On print tool everything is centered and sized correctly.? Management is set to Print-Tool Managed.? ? The images attached are a PDF output directly from Print Tool and a terrible iPhone photo of the plate after printing.? ? Super frustrated.? Any advice is warmly welcomed.<PDF from QTR_1.jpg>
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Thanks Frankie and Clay.? I do have a custom media profile set up for the 12x16 that the Epson seems ok with.? I've tried other images and have the same issue.? Even if I print on the poster board without a plate sitting on top I get the same image offset.??
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I have this issue, but it is not centered horizontally. There is a settings in general printer settings to turn horizontal center. It turn it off and on before every print. This is an issue with print tool. I don’t have this issue with photoshop.?
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On Oct 17, 2024, at 1:15?PM, altstephenrudy@... wrote:
? Thanks Frankie and Clay.? I do have a custom media profile set up for the 12x16 that the Epson seems ok with.? I've tried other images and have the same issue.? Even if I print on the poster board without a plate sitting on top I get the same image offset.??
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I don’t think this is your problem but I ran across a problem with print-tool on some versions of macOS where the various margins ina custom page size ?would be applied to the wrong edge in the print. Eg, if I made the margins L,R,B,T it might have applied it T,L,B,R (or something- I don’t recall the details). My workaround was to make all the margins the same (0.2 inches?) and move the art around manually.?
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On Oct 17, 2024, at 1:46?PM, greg brophy via groups.io <greg@...> wrote:
? I have this issue, but it is not centered horizontally. There is a settings in general printer settings to turn horizontal center. It turn it off and on before every print. This is an issue with print tool. I don’t have this issue with photoshop.? On Oct 17, 2024, at 1:15?PM, altstephenrudy@... wrote:
? Thanks Frankie and Clay.? I do have a custom media profile set up for the 12x16 that the Epson seems ok with.? I've tried other images and have the same issue.? Even if I print on the poster board without a plate sitting on top I get the same image offset.??
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Hi all - I found a workaround in case anyone else encounters this problem.? I cut a new carrier board that is 17" wide and which fills the entire feed space for the P900.? The height is 16" but I don't think that matters.? Now the printed image is centered on the carrier and thus on the plate.? I have exactly no idea why this works, but I have two successful runs this morning.? I'm securing the plate to the carrier with a piece of double sided scotch tape.? I still have load failures but more than half take on the first try.??
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Dear Newbie (altstephenrudy) and ALL-? Do you get any scrapes/gouges on your plates? That’s what I am dealing with on my p900. I finally made a carrier, 17”w by 14” l but haven’t tried it yet. I’m gathering up my courage. Thanks, Cheryl Hanna-Truscott www.HannaTruscott.com
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On Oct 18, 2024, at 10:03, altstephenrudy via groups.io <altstephenrudy@...> wrote:
? Hi all - I found a workaround in case anyone else encounters this problem.? I cut a new carrier board that is 17" wide and which fills the entire feed space for the P900.? The height is 16" but I don't think that matters.? Now the printed image is centered on the carrier and thus on the plate.? I have exactly no idea why this works, but I have two successful runs this morning.? I'm securing the plate to the carrier with a piece of double sided scotch tape.? I still have load failures but more than half take on the first try.??
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Cheryl:? so on the basis of now three first prints, none of which have been through the press yet, I haven't seen any mechanical scrapes on the plates.? This is my media installer profile for the carrier (and if anyone has ideas on the set up please join in.) 
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Hello,
As someone with a new P900, I can feel your pain...10 years with a 3880 with very few problems ( until it died), it has been one issue after another with the P900. Mine works OK with print tool, with respect to centering, however I did have to go through the whole custom Media file set up thing and learning to load it into the printer so it shows up on the media list.?
Anyhow - just for the record I can make mine print a DTP in a carrier ( 1.5mm thickness) with a platen gap of 2.1 mm (I found someone who was printing on 4X matte board).not sure if this give better print quality but it works for me.? Also I have stayed with Sonoma 14.2.1 given all the issues people seem to have with QTR and upgrading. As it is, I get messages from my OS whenever I add a profile to QRT regarding "driver depreciation"...
Hang in there with the P900 once you get all the quirks sorted it seems to be a decent printer.
Dave
On Fri, Oct 18, 2024 at 7:21?PM altstephenrudy via <altstephenrudy= [email protected]> wrote: Cheryl:? so on the basis of now three first prints, none of which have been through the press yet, I haven't seen any mechanical scrapes on the plates.? This is my media installer profile for the carrier (and if anyone has ideas on the set up please join in.) 
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Thanks much. I will keep this in mind. I’m using Toyobo KM95 plates so there might be a slight difference in settings for the platen gap (I’m guessing). And, I haven’t yet tried using the sled. Cheryl Hanna-Truscott www.HannaTruscott.com
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On Oct 18, 2024, at 16:21, altstephenrudy via groups.io <altstephenrudy@...> wrote:
? Cheryl:? so on the basis of now three first prints, none of which have been through the press yet, I haven't seen any mechanical scrapes on the plates.? This is my media installer profile for the carrier (and if anyone has ideas on the set up please join in.) <Screenshot 2024-10-18 at 5.17.39??????PM.png>
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Hi. I'm having a similar issue. In Print Tool I select 11x14 as paper size but when I hit "Print" I get a message that the image does not fit the selected paper size and will be cropped. If I click on "Fit to paper" then it is ok but the image shrinks a bit. (This is for DTP (in a carrier) so it has to be posterboard media. If I select 11x14 posterboard in Photoshop the image is not centred as there seems to be a margin at the top)
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Any idea why??
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thanks
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Joe
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Did you select the paper size in the printer itself?
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On Jan 11, 2025, at 10:35?AM, Joe Smith via groups.io <smithfoto59@...> wrote:
? Hi. I'm having a similar issue. In Print Tool I select 11x14 as paper size but when I hit "Print" I get a message that the image does not fit the selected paper size and will be cropped. If I click on "Fit to paper" then it is ok but the image shrinks a bit. (This is for DTP (in a carrier) so it has to be posterboard media. If I select 11x14 posterboard in Photoshop the image is not centred as there seems to be a margin at the top)
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Any idea why??
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thanks
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Joe
<Screenshot 2025-01-11 at 16.28.32.png> <Screenshot 2025-01-11 at 16.27.54.png>
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No Greg. I had not yet done to that stage. Should I set it on the printer first?
Joe Joseph P Smith MFA Digital Arts (Melit) MSWPP; FMPA; FBIPP; Hon. FMPS; ARPS; AFIAP Instagram: @smithfoto59 Facebook: Twitter: @smithjp59
Did you select the paper size in the printer itself? ? Hi. I'm having a similar issue. In Print Tool I select 11x14 as paper size but when I hit "Print" I get a message that the image does not fit the selected paper size and will be cropped. If I click on "Fit to paper" then it is ok but the image shrinks a bit. (This is for DTP (in a carrier) so it has to be posterboard media. If I select 11x14 posterboard in Photoshop the image is not centred as there seems to be a margin at the top)
?
Any idea why??
?
thanks
?
Joe
<Screenshot 2025-01-11 at 16.28.32.png> <Screenshot 2025-01-11 at 16.27.54.png>
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You have to have both set to the same. You also have to use the Epson media installer to set the paper type. Do a search on YouTube for a video from Northlight in the U.K. on how to set it up.?
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On Jan 11, 2025, at 10:55?AM, Joe Smith via groups.io <smithfoto59@...> wrote:
? No Greg. I had not yet done to that stage. Should I set it on the printer first?
Joe Joseph P Smith MFA Digital Arts (Melit) MSWPP; FMPA; FBIPP; Hon. FMPS; ARPS; AFIAP Instagram: @smithfoto59 Facebook: Twitter: @smithjp59
Did you select the paper size in the printer itself? ? Hi. I'm having a similar issue. In Print Tool I select 11x14 as paper size but when I hit "Print" I get a message that the image does not fit the selected paper size and will be cropped. If I click on "Fit to paper" then it is ok but the image shrinks a bit. (This is for DTP (in a carrier) so it has to be posterboard media. If I select 11x14 posterboard in Photoshop the image is not centred as there seems to be a margin at the top)
?
Any idea why??
?
thanks
?
Joe
<Screenshot 2025-01-11 at 16.28.32.png> <Screenshot 2025-01-11 at 16.27.54.png>
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Thanks Greg. Yes I had already set a new paper type in the installer specifically for DTP. I had not printed DTp for some time so I probably forgot the exact workflow.
Best
Joe Joseph P Smith MFA Digital Arts (Melit) MSWPP; FMPA; FBIPP; Hon. FMPS; ARPS; AFIAP Instagram: @smithfoto59 Facebook: Twitter: @smithjp59
You have to have both set to the same. You also have to use the Epson media installer to set the paper type. Do a search on YouTube for a video from Northlight in the U.K. on how to set it up.? ? No Greg. I had not yet done to that stage. Should I set it on the printer first?
Joe Joseph P Smith MFA Digital Arts (Melit) MSWPP; FMPA; FBIPP; Hon. FMPS; ARPS; AFIAP Instagram: @smithfoto59 Facebook: Twitter: @smithjp59
Did you select the paper size in the printer itself? ? Hi. I'm having a similar issue. In Print Tool I select 11x14 as paper size but when I hit "Print" I get a message that the image does not fit the selected paper size and will be cropped. If I click on "Fit to paper" then it is ok but the image shrinks a bit. (This is for DTP (in a carrier) so it has to be posterboard media. If I select 11x14 posterboard in Photoshop the image is not centred as there seems to be a margin at the top)
?
Any idea why??
?
thanks
?
Joe
<Screenshot 2025-01-11 at 16.28.32.png> <Screenshot 2025-01-11 at 16.27.54.png>
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greg brophy
Cheryl Hanna-Truscott
