Abstract
There are two technologies for ink-jet printing. One is called Continues Ink-Jet technology (CIJ), and another is called Drop On Demand (DOD) technology. Since 1967, CIJ was developed for industrial printing, and it is used in transaction printing market today. DOD was introduced into family use since 1985, and in these days, DOD has begun to be used for industry. The two technologies have advantage and disadvantage, so neither technology yet spread in the commercial printing market. CIJ is inferior in quality, and DOD is inferior in productivity. Last drupa, some new technology that had either advantage was shown and became a topic very much. I would report the present of the ink-jet technology and describe future development.
