| abstract |
(57) [Summary] [PROBLEMS] To be able to cope with a chip under any conditions such as ball diameter, material, dimensions, etc., to obtain a smoothly and constantly stable writing flow rate without occurrence of dents and cracks, stability over time and Provided is a pseudoplastic water-based ballpoint pen ink having high drawing line drying properties. SOLUTION: The pseudoplastic aqueous ballpoint pen ink contains at least a pigment, a dispersant, water, a polar solvent, and a thickener, and further contains 0.05 to 7% by weight of a silicone surfactant based on the total amount of the ink. contains. |