Writing instrument
By using ink containing pigments of different particle sizes in writing tools and using a runner system designed with inner and outer core structures, the problem of unclear external handwriting contours in the prior art is solved, and the clear outer contours and multi-color writing effects of multi-style writing lines are achieved.
JP2025040585AActive Publication Date: 2025-03-25ZEBRA
7 Cites 0 Cited by
Patent Information
- Application Number
- JP2023147481
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2043-09-12
AI Technical Summary
Technical Problem
When writing, the external handwriting outlines are not clear and it is difficult to achieve multi-color or multi-style writing needs.
Method used
Ink containing the pigment of the first and second particles is adopted, and through the design of the inner and outer core structure, the inner and outer ink is ejected onto the paper through the inner and outer runners respectively, thereby forming a clear and diverse writing effect.
Benefits of technology
It realizes the clear outer contour of the multi-style writing line, improves the clarity of the outer contour of the writing line, and supports the multi-color and multi-style writing needs.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a writing instrument capable of writing multiple visible lines and improving the clarity of the outer contour of the multiple visible lines.SOLUTION: The writing instrument includes ink and a writing instrument body. The writing instrument body includes an ink storage section and a tip having an ink ejection face that passes and ejects ink supplied from the ink storage section extending from the ink storage section. The ink contains a colorant including a pigment. The pigment includes a first pigment and a second pigment having an average particle size different from the average particle size of the first pigment. The tip includes an inner tip and an outer tip. The inner tip has a first flow path that passes the inner ink including the first pigment. The outer tip has a second flow path that passes the outer ink including the second pigment and exhibits an appearance different from the appearance of the inner ink. The ink ejection face of the tip includes two first end faces that are separated from each other, which are first end faces of the inner tip, and a second end face, which is an end face of the outer tip and disposed between the two first end faces.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art