| 摘要 |
PURPOSE:To enable an appropriate quantity of ink to be supplied to a writing tip without interrupting writing and without applying excess pressing force to the writing tip in a writing tool of a type wherein ink filling the inside of a body part is supplied to the writing tip via an outflow control valve. CONSTITUTION:An ink filling part 1a is formed in a body part 1 gripped in writing. A writing tip 3 is fitted to a tip of the body part 1 via an outflow control valve 2. A first control valve part 2a supplying an appropriate quantity of ink to the writing tip 3 by opening the valve by writing pressure in writing is formed of a first valve 72, a first valve seat 52, a first coil spring 9, etc. A second control valve part 2b supplying a comparatively great quantity of ink by opening the valve by larger pressing force than the writing pressure in writing is formed of a second valve 82, a second valve seat 54, a second coil spring 10, etc. |
