The present invention relates to an inkjet printer ink cartridge, which configures a sponge-free ink-filling device into a combined structure of a case and an ink outlet base body, which is then attached onto a printed circuit by PECVD. A stand having a recess on the ink outlet base body thereon can be used to dispose a socket. A nozzle plate connected to a heater chip can be inserted to the socket therein. The heater chip is electrically connected to a heating element in airflow guides formed on a surface of the socket thereto. A vertical wire attached to the socket is electrically connected to the vertical wire bent on the printed circuit at an edge of the stand. Therefore, when the heater chip has been used for some time and is required to be replaced, only the nozzle plate and the heater chip are independently replaced, whereas the case and the ink outlet base body can both be repeatedly used. For example, when short circuit occurs on the printed circuit, or ink is soaked into the printed circuit, only the ink outlet base body is required to be replaced, whereas the case can still be repeatedly used, so as to cut costs and achieve environmental protection.

 
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