Unwanted border in print tiling

[desjardins25]

Hello!  I'm trying to print a large image, to create a tracing remplate.  When I try tile printing, each individual tile prints with a heavy black border around the image.  I've tried printing Imageable Areas and Full Pages, and Visible/All Layers and the borders won't go away.  I've attached a photo of a sample print page.  The black border isn't in the image file, and the artboard is set to artwork bounds.  Any ideas?

I tried attaching the native .ai file to this message, and get an error "content type (application/postscript) does not match its file extension".  I'm saving directly from the current version of Illustrator (25.4.1)

Thanks very much for your help.

[Luke Jennings3]

I don't know what's causing the border, but try printing from Acrobat. You can attach a file to your post by clicking the gray button at the bottom left side of this panel (Drag & drop here), if it's still not working, save your file as a pdf, using the Illustrator default settings, then attach.

[J E L]

I don't know much about tile printing, but when you have the document open in Illustrator and click “View” and “Show Print Tiling” to see how your Illustrator design is going to look when it is printed, do you see the borders then?

[J E L]

Also, can you show us your printer settings? Are you specifying an overlap?

[desjardins25]

Thank you for the replies!  I've attached my print settings; I've also tried "tile full pages" and specified a .25 overlap; the border effect still appears.  I do *not* see the borders when using "view tiles".

The forum still won't let me post the native.  I've attached a pdf version using AI's standard settings.

 

[desjardins25]

Following up - I tried printing the file from Acrobat, using the "poster" settings with a .25" offset.  The same borders appear on the print, but not on the preview.  "Cut marks" is NOT selected.

[J E L]

Hmmmm... I'm out of ideas, unless this has to do with your printer settings and not Illustrator. Have you been able to do tile printing with this same printer before without getting a border? If not, are you sure your Brother MFC-7820N is capable of borderless printing? 

Your design is so pretty, by the way!

[desjardins25]

I've definitely printed tiled images before, from MS Paint (this image is too big for Paint to handle).  The printer can't print all the way ot the edge of the page, but it printed tiles without adding additional lines. 

And thank you for the compliment on the design! I hope I can sort out the printing. 

[Luke Jennings3]

I opened your attached PDF in Illustrator and I see a numbered grid pattern, how did you make it? It looks like the grid lines are printing as a solid line, where they appear as a dotted line on your PDF. The unwanted border on your sample tile image matches the position of the numbered grid on the pdf (#3), which suggests this is the source of the problem. Also, I would remove the 18pt. stroke around the outside of the file.

Edit, I don't know how to edit or remove the numbered grid in your Illustrator file, but I can remove it in Acrobat- File> Save as other> Optimized pdf. (see screen shot for settings), this will alter the original Illustrator layers, so save as a new name.

[Ton Frederiks]

Luke, that is the Print Tiling Tool, hidden under the Hand tool in the Toolbox.

[Luke Jennings3]

Ah, thanks Ton. How do you delete them? I don't think they are necessary, as you can add tick marks and overlap when tile printing from Acrobat. It appears desjardain's printer is printing the tiles as a border, removing them should fix the issue. It's also possible selecting the print option "Document" instead of "Document & Markups" might also work.

[Ton Frederiks]

View > Hide Print Tiling.

[desjardins25]

I saved the file with the Print Tiling showing, but that's not what creates the printing issue.  The 18pt stroke around the whole thing is part of the design, for tracing. 

[Lukas Engqvist]

Are the shapes masked? Using path finder mix mode so that the shapes you are tiling are solid rather than masked should resolve the issue. 

Note that in illustrator it is possible to make overlapping artboards so that you could tile it manually by creating your own Art Boards and then exporting these. 

Here is attatched an expanded and merged copy (As PDF)

And a PDF ust to show how you can do artboards to tile manually

[Lukas Engqvist]

Note that if you want to alt drag your artboards to create new artboards and don't want to copy the artcoard you need to make sure this icon is not checked in the control panel.

[desjardins25]

So the mix made a difference, but didn't entirely resolve the issue - you'll see in the attached tile, the border now only runs from her hand, and across the top of the page.  I haven't tried manipulating the artboards.

I did find a workaround, though.  I saved the file as a png, reopened and printed with the same tiling settings.  No line.  So it must be some sort of invisible overlapping going on, but still very strange.

Anyway!  I'm back on track for now.  Thank you all for the comments here!  I really appreciate it.

[Ton Frederiks]

I printed your file to a PostScript file and converted it to PDF.

The result looks fine, even including overlap to glue the pages together.

Here the result when imported (and with rearranged artboards) in Illustrator.

[desjardins25]

That's the issue.  The file *looks* fine in the print preview.  The borders only show up in the print.