Certainly, on this occasion, I have used an Epson Stylus Photo 1500W
https://www.epson.co.uk/products/pri...00w/Tech-Specs
I would try another printer for a comparison.
You could also, should you want to, upload an actual document with the tables and stamp(s) images for a comparison print at my end.
PS - just thought, what is the document format - is it
.doc or
docx. What ever it actually is, save as the other, again for comparison print outs.