Aqueous ink composition, ball point pen and method for improving writing property
Microcapsules in aqueous ballpoint pen inks release lubricants during writing, addressing separation issues with oil-based lubricants and enhancing writing performance.
JP2025181039APending Publication Date: 2025-12-11SAKURA COLOR PRODUCTS CORPORATION
Patent Information
- Application Number
- JP2024088783
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-12-11
Smart Images
Figure 2025181039000001_ABST
Abstract
To provide an aqueous ink composition for an aqueous ball point pen, making a lubricant in a wide range including an oily lubricant applicable.SOLUTION: An aqueous ink composition is incorporated into a ball point pen including a chip 1 rotatably holding a writing ball 3, is discharged from the chip 1 by being guided by the ball 3 in writing, and is written on a writing object. The aqueous ink composition containing a microcapsule encapsulating a lubricant is formed so that the lubricant is ejected due to that a wall material constituting the microcapsule is destroyed when being discharged from the chip 1. The lubricant contains preferably at least one selected from the group consisting of mineral oil, synthetic oil, and vegetable oil, and the lubricant contains preferably polyol ester.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
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