Hello,

I found previous similar posts but none had a solution only workarounds which do not work for my situation.

I am using Autocad 2021 for Mac. PDF's saved in Autocad show correct on screen but when I (or my clients) print them at home, black areas show up around some objects.

I use a lot of hatches/gradients and blocks. I also re-use blocks quite often because most of my drawings are just simple quick layout for visual purposes.

The black ares seem to show up around the blocks and some hatches, mainly gradients.

Proposed solutions I've tried so far:

- Recreate blocks and hatches few times from scratch but it didn't help.

- I've changed PDF printers - initially used AutoCAD PDF (General/High Quality/ ect.) then tried PDF preview save. Next I tried changing to my printer (HP Photosmart 5524) and used "Save as PDF" button. This worked for a while but now it seems the problem came back at point, and I am not sure where since I dont print out every drawing.

- I tried both solutions from Autodesk Support page: https://knowledge.autodesk.com/support/autocad-for-mac/troubleshooting/caas/sfdcarticles/sfdcarticle...

- re-installing AutoCAD, changing versions (currently on 2021) 

- re-installing PDF Printers

Not sure what to do now. I know there are work-arounds such as saving drawings as JPEG's but in my scenario I need to issue the drawings as a PDF to a client and they print out most of the drawings themselves.

I am hoping someone can suggest a working solution rather than a workaround. I dont seem to have that problem on PC. 

Any advice would be greatly appreciated.