Patent ID: 7950786
Filing Date: 2011-05-31
Classification: B41J

Abstract:
1. An ink jet device, used for jetting ink onto a substrate, comprising: an ink reservoir; a print head positioned lower than the ink reservoir; a carry-in pipe connected between the ink reservoir and the print head; an air outlet pipe connected with the print head and intercommunicating with the atmosphere; an ink channel accommodated within the print head, two ends of the ink channel respectively communicating with the carry-in pipe and the air outlet pipe; and a balance pipe fluidly connected between the carry-in pipe and the air outlet pipe and horizontally positioned above the ink channel; the balance pipe is configured for facilitating a pressure balance between the carry-in pipe and the air outlet pipe and eliminating the air bubbles amassed/collected within the ink channel or in any other pipes, thereby the amount of air bubbles in the ink channel or in any other pipes are substantially reduced.