DECOLORABLE INK FOR INKJET PRINTING AND INKJET PRINTING METHOD USING SAME

摘要

A decoloring ink for ink jet printing containing an ang-khak pigment. An inclusion of an ang-khak pigment enables printed characters and/or images to be preserved as long as they are kept in the dark, but they are quickly decolored on exposure to visible light and/or ultraviolet light when they ar e no longer needed.