| 摘要 |
PURPOSE: A mechanical pencil and a black marker pencil for computers are provided to enable users to carry both the mechanical pencil and the black marker pencil at once. CONSTITUTION: A mechanical pencil and a black marker pencil for computers comprises a back cover(102), a mechanical pencil(200), an ink lead for black marker pencil for computers(101), and a lead for black marker pencil for computers(103). The back cover for black marker for computers connects the mechanical pencil and the black marker for computers as detachable. The ink lead for black marker for computers and the lead for black marker for computers are connected so that ink refill can be possible. The lead can be input through a mechanical pencil lead pipe(202) after separating the mechanical pencil from the back cover for black marker for computers. |
