Epson first launched its high-capacity ink tank printers in October 2010 in Indonesia. They spread into other countries (including Australia in the second half of 2015), and by June 2016 cumulative sales reached 15 million.
Benefits include infrequent refilling, lower printing costs, and reduced waste.
Sales have now reached 20 million, and according to the company's research the range now takes around 10% of the combined laser and inkjet market in the 150 or so countries where it is sold.
Epson estimates it has achieved 25% year-on-year unit sales growth for these printers during the year ended March 2017, with ink tank models accounting for approximately 40% of its inkjet sales.
"High-capacity ink tank inkjet printers offer customers the ability to print without worry about the cost or running out of ink," said Epson printing solutions operations division director, managing executive officer and chief operating officer Koichi Kubota.
"Epson's unique Micro Piezo inkjet technology achieves stable, high-level printing performance. Customers appreciate the environmental performance, too: with no ink cartridges to change, the series generates little waste. These factors have helped Epson's high-capacity ink tank inkjet printers reach a cumulative 20 million units sold globally."