Hereunder, the image forming apparatus 1 according to a second embodiment will be described. FIG. 11 schematically illustrates a system for checking the connection between the connector receiver of the first pipe for yellow from the ink tank unit, and the connector of the second pipe for yellow from the ink supply device, in the image forming apparatus according to the second embodiment.
In the image forming apparatus 1 according to the second embodiment, the connector receivers JM1 to JM4 and the connectors JF1 to JF4 each include a solenoid valve SV (open/close device) to be closed when the maintenance mode is set, as shown in FIG. 11. The solenoid valve SV is switched to an open state from the closed state, according to an open signal from the controller 100, and therefore the controller 100 is additionally provided with the open/close function for the solenoid valve SV. In the description of the second embodiment, the description of the elements or configuration similar to those of the first embodiment will not be repeated.
