If I print out a Word document created a few days ago (or earlier) there is no problem. However, if I print out a document created yesterday or today, a large part of the page (but not all) is printed "smeared".
Any ideas as to what can be causing this and where to look for the problem? My suspicion is that it is Word, not the printer.
Try converting the file to a pdf document. (Go to 'Print' and change the printer from 'HP Envy 5544' to 'Microsoft Print to Pdf'). Then open it in your default pdf viewer. (e.g. Adobe Acrobat, Sumatra Pdf or Foxit Reader). Print from there. If it prints normally, your problem is with Microsoft Word. If it comes out smeared, your problem is with the printer.
OK. A Word document converted to a pdf printed out OK. We are having the same problem with Excel so the glitch would seem to be with Microsoft Office. When the print problem occurs, a strip or block of text in the centre strip of the page is blurred/fuzzy.
Emails print OK as did a new Word document I created (a page full of X's).
Definitely weird! (At least you've found a workaround for printing new Word documents though, in that you can convert them to pdf and then print from your pdf viewer application).
If all else fails, simply ditch Microsoft Office and use something else. The most popular alternative is OpenOffice (which I use myself)
https://www.openoffice.org/
but LibreOffice deservedly has plenty of fans too
https://www.libreoffice.org/
WPS Office is less well known but is actually just as good
https://www.wps.com/
You definitely don't need to use Microsoft Office!