| 摘要 |
<p>A method for designing or preparing an ink for an ink jet printer having a printhead with a nozzle plate and a piezoelectric actuator comprises: (i) mixing together components to form an ink; wherein: F is the frequency (KHz) at which the piezoelectric actuator operates when printing and D is the average ink droplet volume (picolitres) created by the piezoelectric actuator at frequency (F); and (iii) if Equation 1 is not satisfied, adding one or more components to the ink in order to satisfy Equation 1. Typically, the ink components comprise (a) compound having one ethylenically-unsaturated group (preferably N-vinylcaprolactam with 2-phenoxy ethyl acetate), (b) compound having more than one ethylenically-unsaturated group (preferably urethane diacrylate oligomer optionally combined with ethoxylated trimethylolpropane triacrylate and propoxylated neopentylglycol diacrylate), and (c) a colorant.</p> |
