JPH0721423B2 - Recording pen - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording pen used for a recorder such as a pen recorder.

2. Description of the Related Art Conventionally, this type of recording pen has an ink chamber and a compensation chamber made of a transparent or semitransparent polymer material as described in Japanese Utility Model Laid-Open No. 57-73623. It is configured such that the ink can be guided to the recording core through the ink conduction hole and the compensation chamber to perform recording.

Next, the operation of the above conventional example will be described. In FIG. 3, liquid ink is injected into an ink chamber 2 of a container 1 formed of a transparent or translucent polymer material. A plate-shaped liquid absorbing material 6 and a cotton fiber member 7 are placed in the compensation chamber 3 and a recording core 8 is held therein. A vertical groove 9 is provided on the side surface of the compensation chamber 3, and an air hole 5 is provided in the upper portion. Normally, the ink in the ink chamber 1 permeates the cotton fibers 7 through the circulation holes 4 and is guided to the recording core 8. A recording line can be drawn by moving the recording core 8 in contact with an external recording paper. Further, when the ambient temperature of the container 1 rises, the pressure of the ink chamber 2 rises, so that the ink is abruptly absorbed by the plate-shaped liquid-absorbing material 6 directly sucking the excess ink flowing along the linear fibers 7 due to the pressure. Air is circulated by the vertical groove 9 and the air hole 5 in order to prevent the ink from flowing into the recording core and to keep the balance with the external pressure.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned conventional example, when the ambient temperature repeatedly rises and falls, ink is accumulated in the plate-shaped liquid absorbing material 6 and gradually blocks the air flow in the vertical groove 9, Further, there is a problem that a large amount of ink flows to the recording core 8 by closing the air hole of the upper air hole 5 and a so-called dripping phenomenon occurs.

The present invention solves such a conventional problem, and an object of the present invention is to provide an excellent recording pen capable of drawing a stable recording line even when the ambient temperature is rapidly changed or repeatedly raised and lowered. To do.

Means for Solving the Problems In order to achieve the above object, the present invention comprises a plate-shaped partition plate on the upper part of a linear fiber provided in a compensation chamber, and a certain space above the linear partition plate is opened. The plate-shaped or rod-shaped liquid absorbing member arranged is provided, the ambient temperature rises, the excess ink sucked into the linear fibers by the pressure of the ink chamber is sucked up onto the partition plate, and when it accumulates in a certain amount, It is configured to be held by the arranged plate-shaped or rod-shaped liquid absorbing member.

Operation The present invention having the above-described configuration has the following operations. That is, when the ambient temperature rises, the pressure in the ink chamber causes the linear fibers to flow, and excess ink rises from the periphery of the partition plate onto the partition plate. When a certain amount of ink collects, the ink comes into contact with the plate-shaped liquid absorption plate, and the ink on the partition plate is sucked up by the capillary phenomenon, so that an air layer is re-formed around the cotton fibers and absorbs the pressure in the ink chamber. can do. Further, the partition plate has a function of preventing excessive backflow of ink and gradually returns the ink from the periphery of the partition plate to the cotton-like fibers, so that an appropriate amount of ink can be always transmitted to the recording core.

Embodiments FIGS. 1A to 1C are a front view and a sectional view of a recording pen according to an embodiment of the present invention.

1A to 1C, 10 is a plate-shaped partition plate, and as can be seen from the top view shown in FIG. 2, the partition plate 10 is in contact with a vertical groove 15 for air circulation around the case. A projection 13 for fixing the partition plate is provided around the compensation chamber, and holds the partition plate 10. Reference numeral 11 denotes a space between the liquid absorbing member 14 and the partition plate 10. When the ambient temperature of the case rises, the ink is transmitted from the ink chamber 16 to the cotton fibers 17 and the ink is collected in the space 11 of the partition plate 10. When the temperature further rises, the ink comes into contact with the liquid absorbing member 14, the ink is rapidly sucked up by the capillary phenomenon, and the air layer is formed again in the space 11.

When the ambient temperature decreases, the pressure in the ink chamber 16 decreases and the liquid absorbing member 14
Of the ink propagates along the inner wall of the compensating chamber in contact with the liquid absorbing member 14 and gradually returns to the air layer 11 and further through the cotton-like fiber 17 and the circulation hole 18
Return to the ink chamber 16.

According to the above-described embodiment, the partition plate 11 absorbs excessive ink due to the pressure of the ink chamber in the space between the cotton-like fibers 17 and the liquid absorbing member, and the air layer can be re-formed to change the ambient temperature. Can draw a stable recording line.

FIG. 2 shows a cut formed in the plate-shaped liquid absorbent material 20 in order to maintain the space 20 between the partition plate 19 and the plate-shaped liquid absorbent material 21.
It is possible to obtain the same effect as that of the protrusion 13 that fixes the partition plate 10 in the figure.

EFFECTS OF THE INVENTION The present invention has a structure in which a partition plate is provided between the cotton-like fibers and the liquid-absorbing member to form a certain space, as is apparent from the above-mentioned embodiment, so that the pressure change in the ink chamber can be absorbed. Have advantages.

[Brief description of drawings]

1A to 1C are front views of a recording pen according to an embodiment of the present invention,
Top view, side view FIG. 2 is a front view of a plate-shaped liquid absorbing member, FIG.
FIGS. 5A to 5C are top view, front view and side view of a conventional example. 10 ... Partition plate, 11 ... Air layer, 12 ... Air hole, 13 ... Projection, 14 ... Liquid absorbing member, 15 ... Groove, 16 ... Ink chamber and ink, 17 ... Cotton fiber , 18 ... through hole, 19 ... partition plate, 20 ... air layer, 21 ... plate-shaped liquid absorbing material.

Claims (1)

[Claims] 1. A hollow recording pen body having an air hole at the center of the upper part and a recording core at the center of the lower part, and a hollow recording pen body mounted in the recording pen body and having a flow hole at the lower part, including the air hole and the recording core. A second partition plate for partitioning the compensation chamber and an ink chamber for storing ink, a plurality of grooves mounted on the side surface of the compensation chamber, and a second partition mounted in the center of the compensation chamber and having protrusions at both ends above. A plate, a linear fiber housed in the lower part of the second partition plate, and a linear fiber housed in the upper part of the second partition plate,
A recording pen comprising: an absorbing member capable of absorbing the ink by a thinning phenomenon in which an air layer is formed by the protrusion.