To improve the adjustment accuracy of the amount of ink by an inking unit for adjusting the amount according to the region.

An ink amount adjusting member 5 is disposed on cylinders 3, 4 above a liquid level of ink 2 in an ink fountain 1, and two types of ink membrane thicknesses can be formed on the cylinders 3, 4 attached to entire width of the member 5 in two ink amount adjusting states by the member 5. An ink transfer cylinder 8 is disposed in parallel with the cylinders 3, 4 attached with the member 5 in such a manner that the intervals between the cylinders 3, 4 and the cylinder 8 are larger than a minimum membrane thickness of the ink formed by the member 5 and smaller than a maximum membrane thickness of the ink formed by the member 5.