IMAGE-FORMING APPARATUS AND INK CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To prevent the clogging of an ink emitting orifice by eliminating the effect of the deterioration of an evaporation heater caused by residue by providing a printing head part having an electric field shutter guiding evaporated and charged ink to a back electrode to cut off the emission of ink and an ink cartridge supplying ink. SOLUTION: Powder ink is stored in a storage part 1 and an evaporation heater 9 is provided to the lower part of the storage part and a wire is provided to the upper half part of a printing head part 60 as a charge electrode 10 charging heated and evaporated ink. An emitting orifice 7 for emitting evaporated ink is provided to an emitting orifice substrate 12 and electric field shutter electrodes 11 controlling the emitting amt. of evaporated ink are provided to both surfaces of the emitting orifice substrate 12 so as to surround the periphery of the emitting orifice 7. The charge electrode 10 is provided at a position not coming into contact with the powder ink in the storage part 1 when an ink cartridge 50 is mounted. By this constitution, even if the residue caused by the evaporation of ink is bonded, it is unnecessary to perform repairing and the clogging of the emitting orifice can be suppressed.