missing characters in high quality PDF

Hi,

as far as I can see from your screenshots all text of the page is missing.

I assume that the automatic page number is coming from a master.

I do not suppose it's a non-printing layer, because the layer color of the graphic is the same as the layer color of the text frames.

What else could be the case? Non printing text frames perhaps.

https://helpx.adobe.com/indesign/using/grouping-locking-duplicating-objects.html#create_nonprinting_objects

To check that spread by spread turn on Overprint Preview. Can you still see the text?

Also see into Separation Preview. Can you still see the text?

https://helpx.adobe.com/indesign/using/preparing-print-separations.html#preview_color_separations

Further things to consider: What's the color of the text? Is it a spot color or is it [Black] ?

If spot color, is that spot color perhaps redirected to a different spot color that in effect is something like a white color?

For that check the settings in your Ink Manager ( you can reach it in your Swatches Panel ). Look if any spot colors are aliased.

https://helpx.adobe.com/indesign/using/inks-separations-screen-frequency.html

Regards,
Uwe Laubender

( ACP )

Hello,

Avoid any preset that it's not PDF/X. If you can, use the PDF/X-4 and tweak it to your necessities. If not, use the older PDF/X-1a preset.

Afterwards —at least for the first runs—, go to "Acrobat - Tools - Print production - Preflight" and check that the PDF are PDF/X-1a or PDF/X-4 compliant ("PDF/X Compatibility" section, just "Analysis").

Never ever send a PDF to production without preflighting it.

Best regards.

There are multiple ways to tell InDesign not to export different elements within a document. Here are a couple you might want to check...

It's possible to tell an entire layer not to print. Within the Layers panel look for layer names that are italicised. Double clicking on a layer name will open the Layer Options where you can toggle the Print Layer option.

The Attributes panel is found within the Output section of the Window menu. With something selected within your document you can toggle the Nonprinting option.