| 摘要 |
A liquid supplying device for supplying liquid to a recording head for discharging liquid comprises a liquid container for containing liquid to be supplied to the recording head, a first connecting portion for connecting the recording head and the liquid container, and a second connecting portion having one end thereof in the liquid container, and the other end thereof being open to the air outside. For this ink supplying device, the one end of the second connecting portion connected with the liquid container is positioned lower than the height of liquid discharge port of the recording head, and an interface between liquid and the air outside exists in the second connecting portion, and by the surface tension of meniscus formed on the interface, negative pressure is generated against the liquid discharge port of the recording head. With the structure thus arranged, this ink supplying device is made capable of adjusting negative pressure against the nozzle of a recording head to prevent ink from dropping down, among some others, without depending on the deformation of an ink tank in the system to supply ink from an ink tank to an ink jet head, and also, made capable of contributing to downsizing the device as compared with the conventional structure. |
