Pen recorder

摘要

In a pen recorder for obtaining desired recording data by pushing pen means mounted to a pen holder onto recording paper, the improvement comprising: (a) a feed mechanism for feeding said recording paper; (b) a moving pen holder for supporting said pen means; and (c) hammer means disposed at the rear of said pen means so as to bring the tip of said pen means into contact with said recording paper; (d) the tip of said pen means being fitted into support holes bored on a leaf spring fixed to said pen holder; (e) said leaf spring urging said pen means toward said hammer means; (f) said pen means being detachable relative to said pen holder; (g) said support hole of said leaf spring being shaped by expanding a part of a round hole in the direction opposite the pen withdrawing direction.