Writing instrument

Abstract

Disclosed is a writing instrument which enables visual identification of a wide range of writing directions through a visual identification section of a pen nib and ensures consistent writing to the last touch of writing. To this end, the pen nib (40) includes a porous structure (45) serving as a writing section, and a holding structure (55) which holds the porous structure (45) and has at least one ink guide section (50) for supplying ink to the writing section. The writing instrument has a relay porous structure (30) for supplying the ink contained in a writing instrument body (10) to the ink guide section (50) provided in the holding structure (55), and allows the holding structure (55) to serve as the visual identification section for visually identifying the direction of writing. The area ratio of the visual identification section to the pen nib (40) that is protruded from the end of the writing instrument body is adapted to be 40% or greater.

Description

technical field [0001] The present invention relates to a writing implement called a marker marker type in which ink in a writing implement main body is supplied to a writing portion of a nib, and more particularly to a writing implement capable of visually recognizing a writing direction in a wide range at a recognition portion of a nib and A writing utensil that can write reliably to the end of writing. Background technique [0002] Conventionally, writing instruments having various structures are known as writing instruments capable of visually recognizing a writing direction at a recognition portion of a nib (see, for example, Patent Documents 1 to 5 filed by the present applicant). In each of the above patent documents, known as techniques close to the present invention are, for example, Figure 25 The writing instrument 1 shown (see, for example, Patent Document 1 filed by the present applicant) includes a pen body 1b that guides ink supplied from a writing instrument ...

AI Technical Summary

Problems solved by technology

[0008] However, in Figure 28 (a) and Figure 28 In the writing implement 4 shown in (b), the ink guide tube 4g is thickened (enlarged) in order to reliably detect the depletion signal, and thus involves some problems in that sufficiently high recognizability cannot be ensured.

In addition, the current situation is that due to the complicated shape of the ink guide tube 4g, it is not easy to ensure the sealing performance of the pen tip and to obtain a structure that exhausts the ink to the end

[0009] In addition, in Figure 29 (a) and Figure 29 In the writing instrument 5 shown in (b), if the thickness of the ink guide portion is reduced to such an extent that sufficiently high visibility can be ensured, the flow of ink cannot be ensured.

On the other hand, if the ink flow rate is intended to be ensured, sufficiently high recognizability cannot be ensured, so the effective recognition portion is limited so that it is difficult to ensure recognizability

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