Patent ID: 7840173

Claim:
A sheet moisturizing device, comprising: paired moisturizing rollers which form a nipping section to apply water onto a sheet when the sheet is conveyed vertically from a bottom of the nipping section up through the nipping section; two water supplying rollers, each being in pressure contact with a respective one of the paired moisturizing rollers to supply the water thereto; and two water supplying tanks, each arranged to face a respective one of the two water supplying rollers; wherein each of the two water supplying tanks includes a first tank which supplies the water to one of the two water supplying rollers, and a second tank which is formed around the first tank and stores water over-flowed from the first tank, wherein a diameter of each of the water supplying rollers is greater than a width of a water surface of the first tank so as to cover the first tank, and wherein an outer wall of the second tank is higher than a wall of the first tank.