JPS6142867Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brush pen having a pen body made of a fiber aggregate.

Brush pens have a pen body made of a fiber aggregate connected to an ink absorbing body that absorbs water-based ink, and in order to give a writing sensation similar to a brush, the fibers that make up the pen body are relatively thick. Therefore, the pen body is rough from the viewpoint of a capillary tube, has poor ink conductivity due to surface tension, and has low ink holding power when the pen body is oriented upward, causing ink to flow back into the ink storage body due to ink drops. If this occurs, you may not be able to write for a while when writing for the first time,
There were problems such as the ink running out while writing.

Therefore, this invention solves the problem of ink running out,
The purpose is to propose a brush pen that can write well from the first stroke, and this purpose is to have good ink conductivity,
A fiber core having an ink holding capacity of 0.1 g/mm3 or ^more is inserted from the rear end of the pen body made of a fiber aggregate covered with a heat shrink tube in the axial direction to the vicinity of its tip, and the rear end of the pen body is This is achieved by using a brush pen whose part is inserted into an ink storage body built into the barrel.

Embodiments of the present invention will be specifically described below with reference to the drawings.

A tapered tip 2 is fitted at the tip of the barrel 1, and the tip of the pen body 3 protrudes from the tip opening so as to be used for writing. The pen body 3 is an aggregate of relatively thick fibers, and a fiber core 4 is inserted from the rear end to the vicinity of the tip in the axial direction, and the surface of the part that is immersed in the barrel 1 and tip 2 is heat-shrinkable. It is wrapped and bundled with tube 5. The rear end of the pen body 3 is inserted into an ink storage body 6 built into the barrel 1. The fiber core 4 has good ink holding capacity and ink conductivity, and serves to prevent ink from dropping inside the pen body 3 and to sufficiently transfer ink to the tip of the pen body 3. If these characteristic values are expressed quantitatively, per 1 cubic mm of fiber core 4
It has a capacity to hold 0.1g or more of ink, and its ink conductivity is 40mm high at a temperature of 20℃ when the fiber core 4 is placed vertically on a shear tray containing 5mm ink. It is desirable that the ink rises within 40 seconds. Furthermore, as shown in FIG. 2, if the fibers at the tip 4a of the fiber core 4 are diffused in the radial direction, it becomes possible to transfer the ink all over the tip of the pen body 3, and the fiber core 4 Although the flexibility is lower than that of the body 3, when the pen body 3 bends greatly to write bold characters, the tip 4 of the fiber core 4
The diffused fibers of a are more easily bent than the non-diffused portions, and can provide continuity to the bendability of the pen body 3.

In this way, the present invention inserts a fiber core with good ink conductivity and large ink holding capacity into the pen body, which is an aggregate of relatively thick fibers, making it possible to sufficiently transfer ink to the tip of the pen body. Therefore, the problem of running out of ink during writing or ink drop making it impossible to write can be solved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing another embodiment. 1... barrel, 2... tip, 3... pen body, 4...
...Fiber core, 5...Heat shrink tube, 6...Ink storage body.

Claims (1)

[Claims for Utility Model Registration] 1. Has ink conductivity such that ink rises within 40 seconds to a height of 40 mm at a temperature of 20 degrees Celsius when it is stood vertically on a shear tray containing ink with a depth of 5 mm,
A fiber core having an ink holding capacity of 0.1 g/mm3 ^or more is inserted in the axial direction from the rear end of the pen body, which is made of a fiber aggregate covered with a heat-shrink tube, to the vicinity of the tip of the pen body. A brush pen characterized by having its rear end inserted into an ink storage body built into the barrel. 2. The brush pen according to claim 1, wherein the fibers at the tip of the fiber core are inserted in a state in which they are dispersed in the radial direction.