[hessammehr]

Ink spread and feathering on cheap paper is unfortunate and frustrating. I would also add pretty much any pigment or iron gall-based ink to your suggestion. Unlike dye-based inks, i.e. the vast majority of your vibrant colors on the market, these contain tiny particles that are (with a little bit of oversimplification) permanently trapped in the cellulose fibers of paper as you write. The end results is that these inks are waterproof and don't show the dreaded feathering/bleeding on cheaper paper. I recommend the Rohrer and Klingner Salix and Scabiosa, two inexpensive iron gall inks (blue-black and purple-gray), Sailor Kiwa Guro and Sei Boku (pigmented black and blue) and the Platinum pigmented inks (available in blue, red and black IIRC). The Salix and Sei Boku have worked wonderfully for me on copier paper with no clogging/cleaning issues so far.