| 摘要 |
PROBLEM TO BE SOLVED: To obtain a colored paper with a large amount of a filler added thereto, having small difference of colors between the front and the back surfaces by coloring by adding a direct dye, and a cationic direct dye or a basic dye to a pulp slurry obtained by using a large amount of the filler. SOLUTION: This colored paper with a large amount of a filler added thereto, having small difference of colors between the front and the back surfaces is obtained by beating a pulp by a refinery, admixing a large amount of a filler, especially calcium carbonate to provide a paper stock in a slurry state, adding a direct dye with a prescribed hue, and a cationic direct dye or a basic dye, and subjecting the obtained paper stock to papermaking.
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