Abstract: The coated paper provided by this invention is a high-quality both-side coated paper for use of printing which is finished by a high-temperature calender above 100.degree. C. and excellent in gloss, print gloss, smoothness, ink receptivity, and stiffness.The both-side coated paper for use of printing according to this invention has the characteristics that after the finish, the paper density is 1.15.about.1.35 g/cm.sup.3, the gloss of coated paper surface is higher than 75%, the smoothness is lower than 20 mmHg, and further the mean value L of Clark free protruding lengths in the machine and cross directions measured pursuant to JIS P8143 A can satisfy the following equation (1) below:L>1.28X+45 (1),whereL=Mean value of Clark free protruding lengths in the machine and cross directions (mm), andX=Product basis weight (g/m.sup.2), andthat the outermost coating layer on both sides of said coated paper contains the kaolin as a pigment whose average particle diameter is 0.5.about.1.0 .mu.

Abstract: A method of obtaining an excellent recycled pulp from waste pressure-sensitive adhesive paper which has previously been discarded. This method being characterized in that the waste paper is defiberized, then a defiberized suspension thereof is diluted, the diluted suspension is coarse screened by a screen having a slit width of below 0.5 mm, the pulp suspension after coarse screening is dewatered so as to have a solid matter consistency of 15 to 40% by weight, the dewatered stuff is mechanically agitated, the difference between the temperature of the stuff before the agitation and the temperature thereof after the agitation being below 12.degree. C., the obtained stuff is being diluted again, the diluted suspension is fine screened by a screen having a slit width of below 0.