| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet ink which, when applied to a specific recording head achievable of higher image quality of inkjet recorded images and improvement of recording speed, has a superior uniformity in color on plain paper, may hardly cause the positional deviation of satellite droplet impact and is also excellent in the durability of the recording head. <P>SOLUTION: The ink for inkjet is applied to a recording head having a common liquid chamber, a plurality of pressure chambers developing pressure applied to a liquid, individual channels through which the liquid is introduced into the plurality of pressure chambers from the common liquid chamber, and a group of nozzles which communicate with the pressure chambers and eject the liquid, where first nozzles having short individual channels and second nozzles having long ones are alternately arranged at arrangement intervals of <30 μm along one side or multiple sides of the common liquid chamber. The ink includes an aqueous medium, a surfactant and a coloring material. The aqueous medium includes water and a water-soluble organic compound containing at least one alkanediol and has a surface tension of ≥40 mN/m and <60 mN/m in an environment of temperature 25°C and humidity 50%. <P>COPYRIGHT: (C)2010,JPO&INPIT |
