| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink for inkjet thermal recording making deciphering of documents impossible with a third party, raising confidentiality, developing a color with a heating apparatus, making the deciphering possible only at need and decoloring the records after deciphering by carrying out inkjet recording in a decolored state. <P>SOLUTION: (1) The ink for inkjet thermal recording comprises a colorant, a wetting agent, a solvent and at least one kind of dispersing agent selected from polyoxyethylene derivatives having a specific structure. The colorant is a dye which is a reversible heat-sensitive material and color development and decoloring of printed images can be carried out by changing the heating temperature after printing on recording paper coated with a developer. (2) The ink for inkjet thermal recording of (1) has (1:0.01)-(1:1) weight ratio of the colorant to the dispersing agent. <P>COPYRIGHT: (C)2004,JPO |
