Image forming apparatus provided with ink cartridge preventing deterioration of heater by ink and ink cartridge of the same

摘要

An image forming apparatus for recording a prescribed image by vaporizing, charging and ejecting ink onto a recording medium includes a printing head unit (60) and an ink cartridge (50) detachably mounted to in the printing head unit (60). The printing head unit (60) includes an ejecting unit (12) for ejecting charged gaseous ink by attracting the ink toward a back electrode provided over the rear surface of the recording medium, and an electric field shutter unit (11) for controlling ejection of the ink from the ejecting unit (12) based on a signal corresponding to image data to be recorded. The ink cartridge (50) includes an ink chamber (1) for storing ink, and a heating unit (9) for vaporizing ink within the ink chamber (1), the ink chamber (1) having an ink supply port for supplying ink into the printing head unit (60).