| abstract |
Provided is a gray ink composition for ink jet printing that is excellent in terms of high reproducibility of coloration, with color reproducibility within the gray color range being extremely good in particular, has good emission stability, and has very good shelf life in that it does not undergo solid separation, property changes, color changes, and the like after long-term storage. Also provided is a method for ink jet printing of cellulose fibers using the same. The gray ink composition of the invention is a dye that contains the compound represented by formula (1) or a salt thereof. |