Low glycol inks for plain paper printing.

摘要

An ink composition for printing on plain paper and other media using a thermal ink-jet printer is provided. The ink composition comprises at least one member selected from the group consisting of ethylene glycol and diethylene glycol, present in an amount ranging from about 5 to 10 wt%; dye, ranging from about 1 to 4 wt%; and the balance water. A biocide ranging from about 0.01 to 0.3 wt% and/or a buffering agent ranging in concentration from about 0.05 to 0.5 wt% may also be included. The ink compositions of the invention permit printing on a large variety of plain papers, including bonds, photocopy paper and laser jet paper. These compositions are an improvement over other ink compositions and permit both high quality and letter quality printing to be achieved.