| 摘要 |
PURPOSE:To provide a print head apparatus in which a printing force is easily adjusted by providing a position adjusting screw mechanism for adjusting the reset position of a leaf spring on one protruding portion of a U-shaped Yoke. CONSTITUTION:An exciting coil is wound around one protruding portion of a U-shaped yoke 3, and an armature spring 7 formed of a leaf spring is disposed be a frame 11 and a yoke 2 with one end thereof being interposed between spacer members 8, 9. The frame 11, armature spring 7 and spacer members 8, 9 are integrally screwed together by means of screws 20. The upper portion of the spacer member 8 is partially cut away on the frame 11 side thereof, and a gap A is provided between the frame 11 and the spacer member 8. This allows the reset position of the armature spring 7 to be adjusted by means of the screw 20. A position adjusting screw mechanism 30 is constituted by the screw 20, the relevant portion of the frame 11 and spacers 8, 9. |
