| 摘要 |
<p>PURPOSE:To enable a picture image formed on a sheet to swell by the foaming action of a foaming ink and enable a dried three-dimensional picture image to be formed quickly by mixing the foaming ink with highly heat-conductive superfine particles. CONSTITUTION:An ink contg. thermally expansible microcapsules of a mean diameter of 10-30mum, comprising a low-boiling volatile matter encapsulated in a thermoplastic resin shell, is mixed with a highly heat-conductive superfine particles comprising an antimony-contg. tin oxide or tin-contg. indium oxide, and then with a medium and a pigment to give a foaming ink. The resulting foaming ink, different from a conventional foaming ink only in a fact that the resulting ink contains the highly heat-conductive superfine particles, can give a dried three-dimensional picture image only by forming a picture image on a sheet and drying the image instantaneously with a high-frequency wave. Thus the efficiency of image-forming work is remarkably improved, and the foamed ink shows a suitable hardness.</p> |
