| 摘要 |
A coated paper for printing by industrial inkjet printing machines that is also suitable for offset printing, that has superior ink absorption properties in printing by an industrial inkjet printing machines, exhibits superior color densities and water resistance of images when printed by an industrial inkjet printing machine that uses water-based dye inks, superior reduction or elimination of uneven printing when printed by an industrial inkjet printing machine that uses water-based pigment inks, and desirable gloss. The present invention provides a coated paper for printing by an industrial inkjet printing machine comprising a base paper and at least two coating layers, a first coating layer and a second coating layer, provided on at least one surface of the base paper. The first coating layer is provided on the base paper and contains an organic pigment, a cationic compound, a binder, and a dogtooth-shaped precipitated calcium carbonate having a minor axis of 0.1-0.5 μm and a major axis of 0.5-2.5 μm. The second coating layer is provided on the first coating layer and contains at least an inorganic ultrafine particle that is selected from hydrated alumina, gas phase process silica, pulverized wet-process silica, and colloidal silica, and that has a mean particle size of 330 nm or less. The paper has a surface pH of from 5.0 to 7.5, wherein the surface pH is determined in accordance with Japan Technical Association of the Pulp and Paper Industry (JAPAN TAPPI) No. 49-2: 2000 by dropping an indicator solution for determining a pH on a surface of the second coating layer, spreading the solution into a thin layer over the surface to color the solution, and comparing the hue that the indicator solution shows with the hues in the pH standard color change table, and the coated surface coated with the second coating layer has a 75-degree gloss value as defined by JIS Z8741 of 45% or more. |
