| 摘要 |
PROBLEM TO BE SOLVED: To avoid the occurrence of unevenness of density at solid printing by an ink jet printer by containing a cation water soluble polymer in the origi nal paper of a clean paper consisting of mainly natural pulp. SOLUTION: In order to fix ink, a cation water soluble polymer is contained In an original paper, and dust prevention resin is impregnated in the original paper, thereby forming a clean paper. Ink discharged from an ink jet printer runs out of particles of binder resin to then fix to a cation water soluble polymer. Such a cation water soluble polymer can include ones obtained by cation- modifying starch, polyvinyl alcohol(PVA), vegetable gum, polyacrylamide(PAM), or the like, and chitosan. Chitosan is used by being dissolved in an acid such as acetic acid, formic acid, lactic acid, nalic acid and so on. Herein, it can be preferably used jointly with two kinds or more of cation water soluble polymers. |
