Patent ID: 6811243
Filing Date: 2004-11-02
Classification: B41J

Abstract:
An improved ink jet ink printing process for priming passage ways to printhead(s) and the interior of printhead(s) used in an ink jet printing process to remove air and contaminants therefrom, which comprises the step of passing an aqueous priming fluid through said passages and into the interior of the printhead(s), wherein the improvement comprises that the aqueous priming fluid has an advancing contact angle of less than about 25 degrees and comprises the following:about 10-90% by weight, based on the total weight of the priming fluid, of at least one polar, water miscible organic solvent having a solubility of at least about 5 parts per 100 parts of water (by weight), and correspondingly, about 90-10% by weight, based on the total weight of the priming fluid, of water.