Skip to main content
C
Cynthia lesExpertsImmo
Participating Frequently
August 7, 2020
Answered

White lines on the print

  • August 7, 2020
  • 5 replies
  • 3843 views

Hi communnity.

 

I am having troubles with the In Design software.

I know it happens to export PDFs with sometimes white lines that shouldn't be there, which when they are printed disappear (picture1).

But this is the first time that in addition, there are also some in the print (and not necessarily the same) (picture2).

It's been happening to me for 2 days now.
I did some research on the forum. I tried to export in PDF/X-4, didn't work. The file haven't been opened in ID then in PS, etc...just ID.

Do you have an idea how could I fix it?


Thanks for reading me, have a nice day.

This topic has been closed for replies.
Correct answer rob day

@rob day
Thanks for your reply. 

Really ?? I never had this problem before. I worked on ID to do the shapes.
Is ID bad at exporting PNG ???


Really ?? I never had this problem before.

 

Here I have a placed Illustrator AI file on the left, and an exported PNG of the AI file on the right:

 

 

If I open the AI vector file in Illustrator, I can see there is a rectangle behind the yellow circle with a .1pt stroke.

 

 

 

InDesign doesn’t show the stroke because the background image is interfering. If I hide the image I can see the stroked rectangle in both the PNG and AI files when they are on a dark gray background:

 

5 replies

C
Cynthia lesExpertsImmoAuthor
Participating Frequently
August 11, 2020

Well...thanks all of you for your help.
I changed nothing, but tried to print anyway, see if I could had more luck today...
...no hairline stroke this time.....................................
Ok...no more problem it seems, but I didn't understand what was that.
Big thanks again.
Am i supposed to close the subject in this case ?

Willi Adelberger
Community Expert
Willi AdelbergerCommunity Expert
Community Expert
August 10, 2020

THese stitching lines occur when transparency is flattened. It can happen when you export PDF/X-1a or X-3 or an EPS. Don't use them as import file types. If you import graphics, use PDF/X-4. Take care that no flattend content is placed in the placed images. Never use PNG.

    C
    Cynthia lesExpertsImmoAuthor
    Participating Frequently
    August 11, 2020

    Thanks for your reply.

    Indeed, like @rob day said, I tried export PDF/X-4.
    I also tried in PNG, AI, EPS, PSD format, and copy paste directly shapes i did on ID, to the flyer project ID.
    Could you tell me more on never use PNG on an ID project please ?

    rob day
    Community Expert
    rob dayCommunity Expert
    Community Expert
    August 11, 2020

    Could you tell me more on never use PNG on an ID project please ?

     

    There is no problem using a PNG as an image format for print as long as it is saved as 24-bits, with enough resolution, and an embedded color profile. PNGs can only be RGB, but they can be converted to CMYK on Export if necessary. When you Export an InDesign page to PDF, the original image format is lost—Acrobat’s Object Inspector would not show a difference between PNG, TIFF, or PSD.

     

    But if the PNG was generated from a vector format like AI, or PDF; and you have the original vector file, PNG would not be a great choice. You would always be better off placing the vectors and not rasterizing the art.

     

    For images, PSD is a more flexible format—you can turn a PSD’s layers on and off inside of InDesign via Object>Object Layer Options... PNGs can include transparency, but they can’t have multiple layers.

      Ashutosh_Mishra
      Ashutosh_Mishra
      Inspiring
      August 8, 2020

      Hi Cynthia,

       

      Sorry to hear about your experience. In addition to the questions asked earlier, I'd suggest trying steps given on this help article and let us know if they work.

      Looking forward to your response.

       

      Regards,

      Ashutosh

      C
      Cynthia lesExpertsImmoAuthor
      Participating Frequently
      August 10, 2020

      Thanks for your answer.
      I didn't found what I needed, but thanks for the share.

      jmlevy
      Community Expert
      jmlevyCommunity Expert
      Community Expert
      August 7, 2020

      Bonjour,

      Les impressions sont faites de quelle manière ? À partir d'InDesign ou d'un lecteur de PDF ? Sur quelle type d'imprimante ?

        C
        Cynthia lesExpertsImmoAuthor
        Participating Frequently
        August 10, 2020

        Bonjour et merci pour ta réponse.

        J'ai tenté les deux provenances, mais le résultat a été le même. 
        L'imprimante est une HP Office JetPro 8730.

        rob day
        Community Expert
        rob dayCommunity Expert
        Community Expert
        August 7, 2020

        If the lines are showing in a PDF/X-4 export, and in print output they are not stitching artifacts, which can occur when live transparency is flattened on export (PDF/X-1a). Looks like the placed logos are PDF or AI files? Without seeing the file and assets I would guess there is a hairline stroke somewhere in the logo file, or applied to the logo’s parent frame?

        C
        Cynthia lesExpertsImmoAuthor
        Participating Frequently
        August 10, 2020

        Thanks for your return.
        In fact, it seems to be random. I tried to use many formats (EPS, AI, PNG...) of the same picture, whites lines were always there. I checked open it in AI : there png was indeed parasite by...sort of invisible cubes, which souldn't been there. Is that what you call "hairline stroke" ?
        Then, I tried to import another PNG in ID, white lines there too. So I did same shapes but directly on my current working page, no importing anything. No longer white lines appeared.
        That was the time when i thought i fixed the matter.
        But when I opened another file, and copy paste the "good" shapes from when it worked, then again, white lines.

        I'm french, maybe I don't understand 100%, sorry !


        jmlevy
        Community Expert
        jmlevyCommunity Expert
        Community Expert
        August 10, 2020

        Bonjour

        Et est-il possible d'avoir une copie des fichiers (ai, png) qui sont importés ?

          Terms & ConditionsAccessibility statement
          Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices