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Bug #10857

Borderless printing with white line

Added by Marek Vančo over 4 years ago. Updated over 3 years ago.

Status:
Closed: invalid
Priority:
Low
Assignee:
Category:
Printing
Target version:
Start date:
01/07/2016
Due date:
% Done:

0%

Estimated time:
Affected Version:
2.0.0
System:
other GNU/Linux
bitness:
64-bit
hardware architecture:
amd64/x86

Description

Hello,

Thanks you very mucn for a excelent work!

Printer module do not print very well borderless photo A6 on my Epson PHOTO PX700W.
One side is with white band. (I cropped photo before with A4 ratio).

Attached scanned photo on gray background to better seeing white band.

Thanks you very much!

(ArchLinux)

Marek

printed_A6.jpg (66.3 KB) printed_A6.jpg printed photo with borderless options (-1) Marek Vančo, 01/07/2016 01:34 AM
Screenshot from 2016-01-07 00-33-00.png (2.88 MB) Screenshot from 2016-01-07 00-33-00.png screenshot of darktable setting print module Marek Vančo, 01/07/2016 01:35 AM
A4_band_on_right_and_bottom.jpg (1.21 MB) A4_band_on_right_and_bottom.jpg Marek Vančo, 01/16/2016 12:14 AM
DSC_4161.NEF (9.9 MB) DSC_4161.NEF Marek Vančo, 03/08/2016 11:50 PM

History

#1 Updated by Marek Vančo over 4 years ago

When I trying to print to A4, I have allways the same line on two sides. The white band is more small as on A6 format. (May be there is problem with Round values on ratio in algoritmes)??

Scanned photo printed as A4 is attached. (on gray backgroud to better see white band.

#2 Updated by Pascal Obry over 4 years ago

Borderless printing is tricky. How did you specify the print in the print module? Generally you need to add a small negative border. This has been reported by other users.

Note also that on A4_band_on_right_and_bottom.jpg the paper seems to not have a fixed size. The margin on the right is lot smaller on the top than on the bottom. Or maybe the paper was taken straight into the printer?

Looking at the printed_A6.jpg ouput, it looks like the width match exactly the one on the original image. And the height is slightly cut. The image don't have a size (ratio) compatible with the paper. So it may explain that.

#3 Updated by Pascal Obry over 4 years ago

  • Assignee set to Pascal Obry

#4 Updated by Pascal Obry over 4 years ago

Ok, I see the print options.

You've added a -1mm on each side. This is certainly not sufficient for the image. Can you post the NEF and .xmp for me to play with this?

#5 Updated by Marek Vančo about 4 years ago

Please excuse me for late response. I was busy.
Here is attached requested .png file.

(For ratio, I used orginal A6 Epson Glossy paper).
Thanks you very much!

#6 Updated by Pascal Obry about 4 years ago

There is something wrong on the screenshot (Screenshot from 2016-01-07 00-33-00.png) to me.

The picture is 4352 x 2868, so a ratio of 1.517

The A6 paper is 148mm x 105mm, so a ratio of 1.409

So the picture is actually wider than the paper. In this case when fit into the paper (all margin of 0) we should have a little border on the top and on the bottom. This is what I'm seeing on my side. With a -1mm margin, I still have two little margins and my displayed picture size is: 148 x 98 which is still close to the image aspect. Good.

In your case you have : 148 x 104 which is not close.

It looks like your printer driver is not sending properly the size of the A6 paper. Also just to be sure, your paper is really 148x105 mm, right? There is some many different paper like A3, A3+ SuperA3... with different sizes!

Another point, I see that you're using the same profile as printer and print settings profile. This is wrong. What is this .ICC? It looks like a .ICC from a paper manufacturer, if so you can't use it in dt. Remember a profile depends on the printer, the paper AND the print-driver. Using a Windows profile here is wrong.

#7 Updated by Marek Vančo about 4 years ago

Thanks you very much.

My paper is 4"x6" Photo Paper Glossy Epson: 152x102mm (ratio 1.49)
A6 is 148x105mm = A6 (ratio 1.40). So this explicate the difference. And you have right, there are any notion about A6 on the user manual or on package of photo papers about A6 (I made it up). It's 4"x6" so ratio is different of A6.

Another point, I see that you're using the same profile as printer and print settings profile. This is wrong. What is this .ICC? It looks like a .ICC from a paper manufacturer, if so you can't use it in dt. Remember a profile depends on the printer, the paper AND the print-driver. Using a Windows profile here is wrong.

Yes, the profiles are from windows. But I don't know where find rights profiles for CUPS (Gutenprint) Linux for Epson photo papers...

#8 Updated by Pascal Obry about 4 years ago

The story is simple... You cannot find the right profile anywhere. The paper maker are providing only ICC suited to the Windows or Mac printer driver (and paper + printer model).

You have two options:
  1. make your own profile. I've done so.
    see http://pobry.blogspot.fr/2013/06/creating-icc-profile-on-gnulinux.html
    WARNING: do not use EoG to print, there is a bug (I have reported it years ago) where the picture is printed with the screen profile.
  1. use a professional service which will create a profile for you. You generally just have to print 3 or 4 A4 sheet of paper from a specific document provided by the professional and send them. Easiest path, but not fun :)

In both cases you must be sure to know what was the CUPS options used to create the ICC and to never touch them again. The most important point is to disable any color management on CUPS driver.

Hope this helps.

#9 Updated by Pascal Obry about 4 years ago

  • Status changed from New to Closed: invalid

No need to keep this open at this stage.

#10 Updated by Roman Lebedev over 3 years ago

  • Target version set to 2.2.0

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