I'd also like to recommend http://www.refillhouse.com/ Their "Magic Tube" refil kits make refiling a simple job. (They are Taiwanese and I have no financial interests with them.)
I use a Design Jet in Australia, When installing the printer it asks what loation is it in and shows a large choie to choose from. I say "Australia" and then have no further problems with reffilling or firmware updates. I think HP know that in Australia it is ilegal to prevent the use of...
We have been using pigment ink from : https://www.aliexpress.com/store/group/Pigment-Ink/2027030_509371356.html?spm=a2g0o.detail.100008.38.4a8d57edFkU7IO
We've been using them for about 4 years with...
The above is a photo of a black and white print with no color. I used a low cost HP T120, and told it was printing on matt film, which then prints in gray scale on glossy which had been loaded. It uses pigment black which I fix with a lght coad of gloss clear coat (There's a couple of shiny...