Patent ID: 7992955
Filing Date: 2011-08-09
Classification: B41J

Abstract:
1. A liquid discharging device comprising: a discharge head that discharges a liquid; a carriage that is movable and holds the discharge head; a sub liquid tank that is held by the carriage and stores the liquid which is supplied to the discharge head; a liquid refill portion that refills the sub liquid tank with the liquid and that comprises a main liquid tank that can communicate with the sub liquid tank; a carriage movement control unit that moves the carriage within a range comprising a liquid discharge position at which the discharge head discharges the liquid onto a recording medium and a liquid refill position at which the sub liquid tank communicates with the main liquid tank; a liquid refill control unit that controls the operation of the liquid refill portion; a sub coolant tank that is held by the carriage and stores a coolant for cooling the discharge head; and a coolant replacement portion that comprises a main coolant tank which can communicate with the sub coolant tank, and replaces the coolant in the sub coolant tank with a coolant in the main coolant tank when the main coolant tank communicates with the sub coolant tank, wherein the sub coolant tank does not communicate with the main coolant tank when the carriage is disposed at the liquid discharge position, and the sub coolant tank communicates with the main coolant tank when the carriage is disposed at the liquid refill position, and wherein the coolant replacement portion comprises a coolant path that allows the main coolant tank to communicate with the sub coolant tank, when the carriage is disposed at the liquid refill position, and the coolant replacement portion collects the coolant from the sub coolant tank into the main coolant tank and supplies the coolant from the main coolant tank to the sub coolant tank through the coolant path.