| 摘要 |
<p>This invention relates to transparent sheet capable of receiving oil-based inks from impact ink transfer printers that use fabric ribbons. The primary requirements for impact transfer printing inks are that they must provide images of acceptable density, while being present on the fabric ribbon in relatively low quantities. A secondary requirement of impact transfer printing inks is that once an area of the ribbon has impacted the receptor surface, that area must have its ink supply replenished by having ink flow thereto from the surrounding unused area. Accordingly, a common feature of most impact transfer printing inks is the use of mineral oil and oleic acid as components of the liquid vehicle, and the use of carbon black or other solid pigments to achieve the requisite color strength. The sheet of this invention is non-tacky, and comprises a backing bearing on at least one major surface thereof an ink-receptive layer, capable of receiving oil-based ink from a fabric ribbon, said layer comprising a polymeric material having a Hansen dispersion parameter from about 10 to about 20 J<1/2>/cm<3/2>, a Hansen dipole parameter of less than about 6 J<1/2>/cm<3/2>, and a Hansen hydrogen bonding parameter from about 8 to about 20 J<1/2>/cm<3/2>. The ink-receptive layer can also contain particulate material.</p> |
