| 摘要 |
PURPOSE:To facilitate a temperature correction design by attaching a head block pressing with spprings at least at three positioning surfaces, or positioning lines or positioning points. CONSTITUTION:The positioning surfaces A', B', C' of a head block 2 are abutted against the positioning surfaces A, B, C of a head carriage 1 by the springs 3, 4, 5, 6. The same effect is obtained even if lines or points as well is used as the positioning reference. In such a way, by pressing the head block against the head carriage by using the springs, the position and the posture of the video reproduction head become accurate, and even if the head block deviates from the carriage, it can be corrected in a moment, and the value of the temperature correction calculation and the actual value become closely each other and the temperature correction design is made easier. |
