Title:
WRITING IMPLEMENT
Document Type and Number:
WIPO Patent Application WO/2024/075805
Kind Code:
A1
Abstract:
Provided is a writing implement that can reliably supply ink to the tip of a pen and can improve ink diffusion properties. A writing implement A according to the present disclosure is characterized by comprising a cotton wadding 17 having two or more fine pore size distributions. The cotton wadding 17 is preferably such that a frequency of occurrence of less than 90 µm is high in a region having a radius of 0.5 mm from the center as determined through cross-sectional image analysis.
Inventors:
KAMITANI TOSHIMI (JP)
Application Number:
PCT/JP2023/036319
Publication Date:
April 11, 2024
Filing Date:
October 05, 2023
Export Citation:
Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
B43K8/03; B43K8/06; C09D11/17
Foreign References:
| JP2017094526A | 2017-06-01 | |||
| JPS53104318A | 1978-09-11 | |||
| JP2015120257A | 2015-07-02 | |||
| JP2020059213A | 2020-04-16 | |||
| JP2021115761A | 2021-08-10 | |||
| US20060163152A1 | 2006-07-27 |
Attorney, Agent or Firm:
FUJIMOTO Eisuke et al. (JP)
Download PDF: