Kingjet 950XL 951XL Ink Cartridge High Yield Replacements Work for Officejet Pro 8600 8610 8620 8630 8640 8660 8615 8625 Printer (3BK 1C 1M 1Y);

★Little Tips

1: It'd be better to keep the printer power-on if you often use it, as printers will run the printhead cleaning automatically when reset, which will waste ink.

2: But if the machine isn't used frequently, then you can turn it off. Just need to switch on the power weekly, which will protect the printhead from clogging.