| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an aqueous mimeographic printing ink capable of regulating the transferred amount of the ink on a material to be printed even if the ink has a low viscosity and obtaining a printed matter excellent in image-forming property and drying property, and a method for mimeographic printing by using the same ink. <P>SOLUTION: This aqueous mimeographic printing ink is provided with that the ink viscosity is≤500 mPa s at 10 Pa on increasing shearing stress from 0 Pa by 0.1 Pa/s rate at 23°C, an ink stringing length is≥30 mm on pulling up a chromium steel ball having 15 mm diameter from the ink by 150 mm/s rate at 23°C, and contains a pigment as a coloring agent and an aromatic sulfonic acid-formaldehyde condensate as a pigment-dispersing agent. The mimeographic printing is performed by using the ink and a mimeographic printer equipped with a freely rotatable drum on whose outer circumferential wall surface a mimeographic printing stock paper is mounted, an ink-feeding means feeding the ink from more upstream printing side than a maximum printable area of the outer circumferential wall of the drum, a press roll for pressing the fed printing medium to the outer circumferential wall, and an ink-recovering means for recovering the ink. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
