| 摘要 |
<p>Systems and methods to control the print-ability of an ink comprising water are presented In exem¬plary embodiments of the present invention, monitoring the conductivity of the ink via a conductivity measure¬ment device yields a signal which, for example, decreases strongly and linearly as water is removed from the ink In exemplary embodiments of the present invention a lower limit on this signal can be set to control the turning on of a pump, and/or the opening of a valve to allow flow of a makeup fluid into the ink In exemplary embodiments of the present invention the makeup fluid can, for example, be comprised of water, a caustic substance, and an in¬hibitor Such a make-up fluid can restore the lost compo¬nent(s) and correct for damage due to ink heating on press Similarly, in exemplary embodiments of the present in¬vention, an upper limit on the conductivity signal can also be set to turn off the pump and/or close the valve, so as to prevent over-addition of the makeup fluid and avoid ink dilution and/or insoluble phase formation</p> |
