This printer series enables high-volume printing without having to worry about the remaining ink reserves, due to the use of a large-capacity ink tank. By efficiently arranging the ink tank on the right and left sides at the front of the printer, it was possible to greatly increase the ink capacity while maintaining a conventional printer size, along with comfortable usability due to a window at the front of the printer where you can monitor the amount of ink remaining, and refill when necessary. This printer thus combines the color qualities of an inkjet printer with the high-volume capacity of a laser printer.