Solved Stop printing unwanted copies

Reinstalling seems to be a bad option.

First, this issue is not worth the trouble. I would prefer to buy a new printer.
Second, I already reinstalled Windows in march. See https://pchelpforum.net/t/cannot-install-windows-10-from-dvd-or-usb-stick.73833/
The printer troubles appeared on a clean install. On the previous install on this PC it worked normally.

There were minor problems during the isntallation of Windows 10 (after the hard drive problems were solved), but if I have to reinstall every time there is a problem, it may take weeks to install Windows.

I hadn’t seen that suggestion about the two-waqy communication yet. I’ll probably try it this afternoon.

I reinstalled the printer as TCP/IP printer using already installed driver chosen by Windows. Test page printed fine. Printing from Foxit reader again resulted in an attempt to print extra copies.

On the tab ‘Poorten’ I disabled the setting ‘Ondersteuning in twee richtingen inschakelen’.

I again instructed the HP LaserJet 1022n to print from Foxit Reader and something extraordinary happened. It printed correctly without trying to print extra pages.
From LibreOffice Writer : the same.

So, it looks like the problem is solved. I wonder what the downside is of disabling two-way communiction.

Thank you for your help guys.