Patent ID: 9688073
Date: 2017-06-27
CPC Classifications: B41J,G03G

Claim:
1. A liquid supply device comprising: a flow passage through which liquid for being imparted to paper flows; a case including an inlet that is fixed to the flow passage and introduces the liquid from the flow passage, and an outlet that leads the liquid out to the flow passage; and a concentration detecting device that is openably and closably or attachably and detachably attached to the case and includes a detection unit, which detects the concentration of the liquid, at a position that faces the case, wherein the concentration detecting device is provided with a mounting part for mounting a liquid tank for storing liquid for calibration, at a position that faces the detection unit, wherein a liquid tank supporting member, which is movable between a calibration position and a standby position, is attached to the concentration detecting device, and wherein the liquid tank is attached to the liquid tank supporting member and faces the detection unit at the calibration position.