| 摘要 |
PURPOSE:To enable an ink film to be repeatedly used, by a system wherein an ink film provided with a multiplicity of minute holes is brought into close contact with a conductive layer, and a return circuit electrode is provided for an electric current returned from a needle electrode through a current-passing layer and the conductive layer. CONSTITUTION:The needle electrode 4 is provided on the current-passing layer 1 side of a base film 3, and the return circuit electrode 5 is provided on the layer 1 side. The ink film 6 provided with a multiplicity of minute holes 6a is brought into close contact with the conductive layer 2 of the base film 3, and the holes 6a are filled with an ink 7. With a voltage impressed on the needle electrode 4, and electric current flows into the conductive layer 2 through the current-passing layer 1, and is returned to the return circuit electrode 5 through the layer 2. The contact area of the return circuit electrodes 5 is set to be sufficiently large as compared with that of the needle electrode 4. Due to the resistance difference between the layers 1, 3, heat is rapidly generated at the interface 3a therebetween, whereby the ink is heated at the interface to generated a bubble, the ink is caused to fly out, and is adhered to a recording medium 8, thereby recording. |
