A tank printer draws ink from a well which is a tank that you fill with ink. A cartridge printer draws ink from a disposable cartridge you buy. Pros and cons are: Cartridges can be expensive, but at least they are clean and easy to change and readily available at lots of stores.
https://www.quora.com/What-is-the-difference-between-a-tank-printer-and-cartridge-printer-Which-is-better-for-home-use
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The machine is the first of its kind in Britain, and the printer manufacturer claims it will cost a fraction of the price to fill it with ink. Tokyo-based electronics company Epson has unveiled two new printers that have refillable tanks rather than ink cartridges.
http://www.dailymail.co.uk/sciencetech/article-2778082/End-ink-cartridge-Epson-unveils-printer-refillable-TANK-print-6-500-pages-needs-refilling.html
Depend on unsurpassed quality and reliability with Original HP ink cartridges. Plus, free shipping, delivered next business day. Depend on unsurpassed quality and reliability with Original HP ink. Free shipping, delivered next business day.
http://store.hp.com/us/en/mlp/ink--toner---paper/ink-cartridges
When your enrolled printer is connected to the Internet, your printer automatically orders ink for you because it knows when you are low on ink. Your printer orders ink when your cartridges have enough ink to print twice the number of average pages included in your monthly plan.
http://www8.hp.com/us/en/instant-ink/overview.html
When you are looking to buy a printer buy it according to the use. Tank printer and cartridges printer are both different from each other. Tank printer takes ink from its tank that the user fills, while a cartridges printer takes ink from its cartridges which you buy. The use of cartridges is expensive but they are easy to use, change and clean are can be easily bought from the market, while the ink used in tank printer is cheaper than cartridges.
https://www.quora.com/What-is-the-difference-between-a-tank-printer-and-cartridge-printer-Which-is-better-for-home-use
When you enroll in an HP Instant Ink plan, you pay a monthly fee to print a defined number of pages per month. The plans are based on the number of pages that you print, not on how many ink cartridges you use. Your monthly fee pays for ink, shipping, and recycling.
http://www8.hp.com/us/en/instant-ink/overview.html
Yes, you can print full color photos, color documents, or high-quality black and white pages. Each page costs the same. Your monthly fee is based on the number of pages you print, not on the amount of ink you use. You never have to worry again about printing in black and white to avoid using your color ink cartridges.
http://www8.hp.com/us/en/instant-ink/overview.html
But forking out for printer cartridges may soon be a thing of the past. Epson has launched a cartridge-free printer that uses a refillable ink tank. The machine is the first of its kind in Britain, and the printer manufacturer claims it will cost a fraction of the price to fill it with ink. Scroll down for video. Tokyo-based electronics company Epson has unveiled two new printers that have refillable tanks rather than ink cartridges.
http://www.dailymail.co.uk/sciencetech/article-2778082/End-ink-cartridge-Epson-unveils-printer-refillable-TANK-print-6-500-pages-needs-refilling.html
HP Instant Ink sign-up required to use these cartridges. Exclusively for printers: ENVY 4500, ENVY 5530, OfficeJet 4630. Save up to 50% on Original HP Ink - ordered by your printer, delivered to your door. Plans starting at $2.99/month - $20 credit included (up to 6 months of printing)
http://store.hp.com/us/en/mlp/ink--toner---paper/ink-cartridges
what is cartridge free printing
Cartridge free printing is a printer that uses a refillable ink tank.