Copy link to clipboard
Copied
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.
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
...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:
Copy link to clipboard
Copied
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?
Copy link to clipboard
Copied
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 !
Copy link to clipboard
Copied
Bonjour
Et est-il possible d'avoir une copie des fichiers (ai, png) qui sont importés ?
Copy link to clipboard
Copied
Ce que dit Bob, c'est qu'il pense qu'il ya réellement des filets très fins (hairline strokes) dans le logo ou sur le bloc dans lequel le logo est importé.
Si je comprends bien ta dernière phrase, tu dis que quand tu crées directement une forme dans InDesign, il n'y a pas ces fines lignes mais que si tu copies cette forme dans un autre fichier, elles réapparaissent ?
Copy link to clipboard
Copied
Merci pour ta réponse, et désolée pour mon anglais 😃
Désolée je ne peux pas fournir les fichiers sources malheureusement, seulement des screenshots.
Lorsque j'ai copié collé mon montage de formes (le "badge") préalablement fait sur une autre fenêtre ID, sur mon projet de flyer, les lignes sont apparues. J'ai vérifié tous les contours et styles d'objets, il n'y avait rien pourtant.
J'ai donc refait le même montage directement sur le flyer, et les lignes ne sont pas apparues.
Copy link to clipboard
Copied
Sans voir les fichiers, c'est difficile d'avoir une idée juste du problème. Mais c'est résolu ou pas ?
Copy link to clipboard
Copied
PNG is an image format, so the lines may have been added when the original vector art was exported to PNG.
Copy link to clipboard
Copied
@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 ???
Copy link to clipboard
Copied
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:
Copy link to clipboard
Copied
I understand now, thanks for your patience.
I get this when I select the stroke window.
Copy link to clipboard
Copied
It looks to me like the art you have selected in Illustrator is a placed image file—it’s just pixels and no vectors? If that’s the case the lines could be opaque pixels in the image file.
Can you share the Illustrator file along with any placed assets?
Copy link to clipboard
Copied
Indeed, I did the concept on In Design, so it's not vectorial, just pixels. So it could be sort of opaque pixels ?
Edit : Jmlevy corrected me, I did the concept on Indesign, so it's vector and no pixels.
Copy link to clipboard
Copied
Mais ce logo, il a été créé dans quel logiciel, à l'origine ?
Copy link to clipboard
Copied
Je l'ai fait sous In Design.
Copy link to clipboard
Copied
Mais si tu l'as fait dans InDesign, pourquoi l'as tu exporté en png ? Pour un usage web ?
Et en anglais, tu écris « ce n'est pas vectoriel, que des pixels ». Si tu l'as fait dans InDesign, c'est justement le contraire : que des vecteurs, aucun pixel.
Copy link to clipboard
Copied
Je l'ai d'abord fait sur un projet in design à part, pour le conserver plus pratiquement vu que je savais que j'allais probablement m'en resservir ailleurs.
J'en avais besoin sur un autre projet type flyer, donc je l'ai copié du projet 1 pour le coller au projet flyer.
J'ai eu ces traits blancs, donc j'ai essayé d'autres moyens, d'où le coller dans d'autres "formats".
Copy link to clipboard
Copied
Bonjour,
Les impressions sont faites de quelle manière ? À partir d'InDesign ou d'un lecteur de PDF ? Sur quelle type d'imprimante ?
Copy link to clipboard
Copied
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.
Copy link to clipboard
Copied
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
Copy link to clipboard
Copied
Thanks for your answer.
I didn't found what I needed, but thanks for the share.
Copy link to clipboard
Copied
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.
Copy link to clipboard
Copied
The OP tried PDF/X-4 so they are not stitching artifacts.
Copy link to clipboard
Copied
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 ?
Copy link to clipboard
Copied
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.