| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a print head for ink jet having a structure of press-welded FPC board and PCB board, which can prevent conduction failure between electrodes when a FPC board and a PCB board are press welded, and surely press-weld them within a short time, by using a relatively simple split structure of the electrode part of the FPC board print head. SOLUTION: For the print head for ink jet, an electrode part of a FC board is made to have a horizontally split structure in order to release a mismatch of relative position between electrode of the FPC board and a PCB board. And a plurality of electrode parts of the PCB board are made to have a structure having a difference of levels in vertical direction. Further, the level difference of the electrodes of the FPC board are made to have a structure of arranging them in staggered-shape. By those FPC board structure, the conduction failure between the electrodes when the FPC board is press-welded to the PCB board is prevented, and both boards can be surely press-weld within a short time.</p> |
