| 摘要 |
PURPOSE:To simplify a structure and to improve the positional precision of a movable element, by forming in one body a projected part or a recessed part for detecting the position of the movable element in a stator. CONSTITUTION:Plural slits 14 for position detection are formed in the same direction as arrangement of grooves 2 on a stator 21. These slits 14 are formed simultaneously with formation of grooves 2, and positions of slits 14 for grooves 2 are made accurate. A reflection photosensor 15 detects the position of the movable element on a basis of slits 14. A print head 16 consisting of an ink ribbon, type wheel, hammer, etc. is mounted on the movable element 3, and the movable element 3 is moved in the direction of an arrow A or B along a platen 17 provided in parallel with the stator 21 to print data on a print form 18. |
