writer v6.0 poor text print quality

My HP Deskjet printer prints text which is bolder at the top of each character when printing from Writer v6: if I print a document from another app on the PC the text is perfect.
Does anyone else have this problem or know how to fix it?

For printing issues you really should include LibreOffice version, Operating system and version, Printer brand and model, how it is connected, Wifi, USB, Network cable.

I would update the printer drivers, check the operating system is up-to-date and has been restarted recently and not waiting for reboot. Try running HP Print and Scan Doctor, and also re-aligning print heads

Maybe the font in your document is damaged (or not installed, if LO is using a substitute then the font name will show as italicised in the toolbar if I remember correctly), can you print properly using that particular font from another application? Maybe export a document as pdf and print from a pdf viewer.

I have use HP Officejet (but not Deskjet ) printers with LO Writer on Windows and Linux Mint without any printing quality problem that I recall. Cheers, Al

Libreoffice version is 6.0.7.3 running on Linux Mint 19.3. Printer is HP Deskjet 1512 connected by USB.
If I use Linux printers-local host properties and print test page it looks good, as it does if I select a pdf and print using Linux document viewer.
In Writer my Font list starts with aakar but there are no fonts such as Courier, Times New Roman, Arial etc.
The fault is strange: the top 25% of each character is bold and the lower 75% is not.
I have created a test page selecting a different font for each line of text: FreeMono, FreeSans, Liberation exhibit this problem.
I downloaded the printer driver from the HP site: HPLIP-3.20.9 because I was trying to get the ink levels reported back but it still does not report the ink levels (I thought initially that I had an ink problem).

Just upgraded LibreOffice to 7.0.3.1 and still seeing the same problem.

Can you print OK in LibreOffice Safe Mode (Help >Restart in Safe Mode)? The User profile is retained through upgrades and if it is corrupted that will carry through.

If it prints OK then exit out of LO entirely. Using a file manager, navigate to your user folder and rename it User[YYYYMMDD]. Restart LO and it will create a new user folder. Close LO and copy back over just some of the folders,e.g Autocorrect, Autotext, Backup, basic, template, wordbook.

I thought I would try to connecting the printer to my old Windows PC which has Microsoft Word on it. I basically got the same problem so I downloaded another driver from the HP site and still had the problem. I tried taking the printer apart, as much as I could but could not find anything wrong / worn, so I tried resetting it according to someone on YouTube, and it seems to have cleared the problem, so I think it was a printer problem, even though some documents seemed to print correctly.
Thanks for your help Al