| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for writing in a uniform thickness which makes writing always in a uniform thickness possible in a writing implement for writing with its own lead end sharpened and others and its device. SOLUTION: The outer end of a knock pipe 2f is projected pressably at the rear end of a cover case cylinder 1a equipped with the coil spring type rotation mechanism 3 of a knock type mechanical pencil 2 in which a lead end α1 protruded at the tip of a taper part 1a is received rotatably, and a slide stopper 1b for starting/stopping the rotation of the mechanical pencil 2 is set up on one side of a front part. |
