Patent ID: 7510610

Claim:
A sheet moistening device comprising: a pair of moistening rollers which respectively have porous layers and form a nip to convey a sheet; a dampening mechanism which supplies water to at least one of said pair of moistening rollers through a surface whereof; a regulating device which regulates an amount of water to be supplied from said dampening mechanism to said moistening roller, wherein a roller surface hardness differs between said pair of moistening rollers which form said nip, and one of said pair of moistening rollers which has a harder roller surface comprises a moistening roller which is dampened by said dampening mechanism; wherein said dampening mechanism includes a dampening roller which has a porous layer and comes into contact with at least one of said moistening rollers and rotates to supply water thereto; and wherein said regulating device includes a first regulating member which is to be brought into tight contact with said moistening roller which is dampened by said dampening mechanism, and a second regulating member which is to be brought into tight contact with said dampening roller.