The Print command in writer fails to print the top half of some characters in a line.

I create a Writer document but when I print the document the top half of the characters in every 6th line only partially prints, the lower half is fine.
I am using Libre Office 6.3 in Windows 10 Pro

What kind of printer? If it’s a laser printer, it might be that the toner cartridge is damaged. Please provide more information.

Sounds like a printhead problem in an inkjet printer

Hello @FJ45, Try to print a vertical line (e.g. a table border) to discard a printer issue. If not a printer issue, share a copy of the file (first remove all sensible data).

Click edit below your question to add more information, and use the paper clip to upload a sample file.

Potentially, it might just need the printer to be hard reset. It might just need the printhead being cleaned. The manual for your unknown printer should tell you how to do it.