[. . . ] The ink cartridges first installed in your printer will be partly used to charge the print head. [. . . ] The ink cartridges first installed in your printer will be partly used to charge the print head. These cartridges may print fewer pages compared to subsequent ink cartridges. Keep ink cartridges out of the reach of children and do not drink the ink. If you remove an ink cartridge for later use, protect the ink supply area from dirt and dust and store it in the same environment as the printer. If you still have discomfort or vision problems, see a doctor immediately. [. . . ] If you remove an ink cartridge for later use, protect the ink supply area from dirt and dust and store it in the same environment as the printer. [. . . ]