| 摘要 |
PROBLEM TO BE SOLVED: To obtain a printing of high quality (stain or tailing preventing effect) by providing an ink absorption layer as a lower rear layer of a print and picture image (rear surface layer), thereby upgrading ink absorption properties and dryness. SOLUTION: The postcard 11 is formed in a plurality-layer structure. An ink absorption layer is provided as a lower rear layer 11b of a rear surface layer (print and picture layer) 11a to strengthen ink absorption in a thickness direction, and ink absorption and diffusion in a surface direction are suppressed as much as possible. Thus, absorbing properties of high viscosity and oily type ink for a Print Gokko (trademark) of a printing player and low viscosity and aqueous type ink for an ink jet printer are upgraded. Further, to improve blur preventing operation of low viscosity and aqueous type ink for the ink jet printer, white carbon having larger specific surface area than kaolin or talc used as filler of 5 to 10 wt.% is mixed to enhance an absorbing effect. And, to suppress absorption or diffusion of a surface direction of ink, sizing agent is added to the layer 11a, and a contact angle of water to the surface of the layer 11a is set to 85 to 110 degrees. |
