FILLING LIQUID FOR DISTRIBUTION OF INK JET HEAD, INK JET HEAD, AND DISTRIBUTION METHOD FOR INK JET HEAD

摘要

A filling liquid for distribution of an ink jet head of a thermal type, the filling liquid filling a nozzle flow path during distribution of the ink jet head, a hydrophilic region formed on a periphery of an ink discharge port having an opening area of from 100 to 350 μm2, the filling liquid including: an aqueous medium having at least a water-soluble organic compound and water as constituents; and a dye dissolved in the aqueous medium, a concentration of the dye in the filling liquid being 0.2 mass % or more and 1 mass % or less with respect to a total mass of the filling liquid and the concentration of the dye being equal to or less than saturation solubility with respect to the water-soluble organic compound, wherein the filling liquid has a surface tension of 25 mN/m or more and 34 mN/m or less.

主权项

1. A filling liquid for distribution of an ink jet head of a thermal type, the filling liquid for distribution being to fill a nozzle flow path communicating with an ink discharge port during distribution of the ink jet head, the ink discharge port of the ink jet head having an opening area of from 100 to 350 μm2, the ink jet head including a hydrophilic region formed on a periphery of the ink discharge port,
the filling liquid for distribution comprising: an aqueous medium including at least a water-soluble organic compound and water as constituents; and a dye dissolved in the aqueous medium, a concentration of the dye in the filling liquid for distribution being 0.2 mass % or more and 1 mass % or less with respect to a total mass of the filling liquid for distribution and the concentration of the dye being equal to or less than saturation solubility with respect to the water-soluble organic compound, wherein the filling liquid for distribution has a surface tension of 25 mN/m or more and 34 mN/m or less.