| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an oily pigment ink mainly used for inking pads. SOLUTION: This oily pigment ink comprises a solvent comprising polyoxyethyleneoxypropylene triol of the formula, polypropylene glycol and/or polyethylene glycol, a pigment and at least one kind of material selected from the powder of an acrylic resin, an acrylic resin aqueous solution, a water-soluble acrylic resin colloidal dispersion and a water-soluble acrylic resin emulsion. Since the ink is not dried and does not absorb moisture, the ink does not cause that the surface of an inking pad is dried to make the use of the ink pad impossible, when the closure of the ink pad with a lid is forgotten, or that the inking pad adversely absorbs moisture in air in a wet state. The use state of the inking pad is thereby not changed over a year. The ink does not further deteriorate rubber stamps made from natural rubber, resin stamps made from photosensitive resins, etc. Since the ink is excellent in osmotic force into absorbing materials such as paper, printed imprints can quickly be penetrated and dried.</p> |
