| 摘要 |
PURPOSE:To adapt the title recording paper to an ultrahigh speed machine by improving recording sensitivity without being accompanied by the generation of scumming by using base paper composed of a pulp composition containing a specific amount or more of regenerated pulp prepared using old paper as a raw material and characterized by that the measured value of the surface thereof due to a regular reflection type smoothness meter is specific. CONSTITUTION:Base paper compound of pulp composition containing 10wt.% or more of regenerated pulp and characterized by that the measured value of the surface thereof due to a regular reflection type smoothness meter is 8% or more under pressure of 20kg/cm<2> is used. The repulpable feedstock such as a non-printed high quality white, a ruled high quality white or creamy colored, a non-printed high quality creamy colored, a card, a non- printed intermediate quality white a non-printed denatured white, a printed high quality imitation, a printed colored high quality including art, a Kent, a non-printed art, a color printed intermediate quality, a color printed denatured, a news, a magazine, etc., papers can be employed. The regenerated pulp is treated by a beater in the front process of a papermaking machine and lowered to about 30-150ml in Canadian Standard Freeness before use. In the surface smoothing treatment of the base paper, it is effective to use a super calender or gloss calender constituted of a metal roll and an elastic roll according to an on-machine or off-machine system. |
