InDesign PDF export body copy changing - please help
Hello All,
This is my first post and I am in dire need of assistance. I am having an issue with the body copy in a print magazine I am self-publishing about performance cars.
Basically whenever I export to PDF, the body copy is changing and "fattening" whilst also losing definition. Best illustrated by these images of a direct print out of ID vs a print from the exported pdf;


I had a 5 dummy issues of the magazine made up and printed off at a not insignificant cost and they all featured the fatter body copy.
However...if I right click the exported file and open it with Acorbat DC, then print out of that, the body copy prints off as it should...
I am by no means an expert, and with the magazine pages being uploaded to the printers via an online portal, I need to find a solution to the dilemma to ensure the correct file is sent. Please forgive me if this is a simple fix, I am not a professional/an expert...this is a passion project. I would be happy to share any required files
Many thanks in advance,
Craig
