Patent ID: 6257712
Filing Date: 2001-07-10
Classification: B41J

Abstract:
An ink jet printer, comprising:a main tank that stores inkan ink subtank having a casing that stores the ink, the casing including a first ink supply port, a second ink supply port, an ink outlet port and at least one ink partition wall that partitions the casing to form multiple chambers, the at least one partition wall having an upper communicating part which allows air to move in an upper part of the multiple ink chambers, and a lower communicating hole which allows ink to move in a lower part of the multiple ink chambers;a print head having multiple apertures that jet the ink on a recording medium and an ink housing that distributes the ink to the multiple apertures, the ink housing including one connector and another connector;a first supply part that connects the main tank to the first supply port to feed the ink from the main tank to the ink subtank;a second supply part that connects the ink outlet with the one connector to feed the ink from the ink subtank to the print head; anda return part that connects the another connector with the second supply port to feed the ink from the printhead to the ink subtank;wherein the first ink supply port, the lower communicating hole and the ink outlet are arranged so as not to be aligned and formed so that ink meanders in the ink subtank.