| 摘要 |
PROBLEM TO BE SOLVED: To provide stationery capable of ensuring addition function without damaging utility. SOLUTION: The power generation means 20 locked with a handle 5 to which rotational drive force is manually applied is provided and a microcomputer 30 is driven by the power generated by the power generation means 20. By this constitution, intelligence is imparted to a pencil sharpener 1 without largely altering the shape or structure of the pencil sharpner 1 and damaging the function of the pencil sharpener 1 at all. Even if an addition function such as a function urging the disposal of cut refuse in a cut refuse case 4 or a function urging the replacement of a blade 11 is imparted, replacing work of a battery such as a dry battery, a secondary battery or the like and a dry battery and charging work of the secondary battery are dispensed with and the utility of the manual pencil sharpener having user's convenience and usable readily is kept as it is. |
