PDF Report : how to disable header and footer lines

With the Zotero software version 5.0.96 installed in my computer running with windows, I generated a report from the selected items like it has to be done https://www.zotero.org/support/reports. Whatever the virtual printers i use (PDF Creator, Microsoft print to PDF, ..), the PDF page printed includes a footer line with date and hour or a header line with a website address. The report generated is not clean for my needs. I looked at the printers parameters to disable the option but i can't find ways.

How to avoid these lines to appear ?
Thank you for your tips.
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