Writing implement

Abstract

A writing implement comprising an ink storing chamber (2) formed within the writing implement main body (1), a pen body (5) disposed at the front end of the writing implement main body (1), reservoir chamber (10) formed between the ink storing chamber (2) and the pen body (5) and communicating with the atmosphere and also with the pen body (5), a plurality of partition walls (14, 14a) separating the reservoir chamber (10) and the ink storing chamber (2) from each other and axially dividing the ink storing chamber (2) into a plurality of small chambers, and ink feeder (16) extending through these partition walls and feeding ink from the ink storing chamber (2) to the pen body (5). And, each partition wall (14, 14a) is formed with a communication hole (15) capable of holding ink by capillary attraction, these communication holes being sealed by ink films.

Description

field of invention [0001] The present invention relates to a writing instrument having an ink supply mechanism with a simple structure, and more particularly, to a writing instrument capable of increasing ink storage and stably supplying ink to a writing element. Background technique [0002] Conventionally, people have developed various so-called direct-ink type writing instruments, which directly store ink in an ink chamber. The advantage of such a writing instrument is that it can store a large amount of ink, but its disadvantage is that it needs to have a complicated structure for adjusting ink pressure and controlling ink supply, etc. to stably supply ink in an ink chamber to a writing element, such as a A ball core and a linoleum core. [0003] As mentioned above, for stable ink supply, consideration should be given to compensating the expansion and contraction of gas in the ink chamber due to temperature and pressure changes, and compensating the hydraulic pressure o...

AI Technical Summary

Problems solved by technology

[0009] Such a writing instrument itself does not require a variable portion, while having a simple structure, but it is difficult to introduce air into the ink chamber corresponding to ink consumption (gas-liquid exchange), and to preserve and control the flow of air from the ink chamber. The ink is discharged from the ink chamber, so its disadvantage is that it is difficult to ensure stable operation

[0010] In other words, it is difficult to always close a small diameter channel with ink in a constant state, so there is a problem of unstable performance and ink drying in the blocked small diameter channel

As a result, it is not always possible to obtain sufficient stability and reliability

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