PURPOSE: To miniaturize a facsimile by mounting a stamp member on the one- way clutch mounted on the shaft of a sensor roller.

CONSTITUTION: A sensor roller 7 is mounted on a shaft 12 and an one-way clutch 15 is mounted on the shaft 12 in close vicinity to the sensor roller 7. Further, a stamp holder 16 is mounted on the one-way clutch 15. The stamp holder 16 is formed into an almost columnar shape rotated along with the one-way clutch 15 and a protruding part 16a is formed to a part thereof. The protruding part 16a comes into contact with the stopper 17 formed to a guide frame 13 to prevent the rotation of the stamp holder 16. A stamp pad 18 is fitted in the stamp holder 16 in a protruding state and formed of foamed rubber to be impregnated with ink. Therefore, special space for mounting a stamp material is unnecessary and a facsimile can be miniaturized.