Mitsubishi Pencil Company, Limited

Atsushi Iwasa

Takahiro Osada

Yukinori Sawa

Akira Fukai

An applicator which includes a rear barrel; an ink occlusion elementaccommodated in rear barrel; an ink occlusion element receiveropposing the front end part of ink occlusion element; a see-through front barrelfitted to the opening of rear barrel, a detection tubeinserted in front barrelfor flowing ink from ink occlusion element; a joint coresupported by detection tubeand flowing out ink from ink occlusion element; and a pen coresupported by detection tubeand disposed on the opposite side of joint corewith a detection spacefrom joint core. Detection tube, joint coreand pen coreare formed into an integral structure. It is possible to exactly grasp the ink end state in a visual manner, based on the presence/absence of ink in detection spaceof detection tube

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Fujioka, Japan

Atsushi Iwasa