| 主权项 |
1. An ink jet system comprising:
an ink supply mechanism which supplies a photoreactive ink to an ink jet head; and an ink recovery mechanism which recovers the photoreactive ink emitted from the ink jet head, wherein the ink supply mechanism includes a first ink path through which the photoreactive ink flows, wherein the ink recovery mechanism includes a second ink path through which the photoreactive ink flows, wherein the first ink path has light shielding properties, and wherein an observation area through which the photoreactive ink flowing in the second ink path can be observed is provided in at least a part of the second ink path. |
