| 摘要 |
<p>PROBLEM TO BE SOLVED: To securely collect dust and to carry in no dust to succeeding stages by forming a recessed part by machining the back layer of a magnetic tape, supplying an ion wind to nearby the machined part, and electrically charging and removing dust produced in the machining. SOLUTION: The machining device 10 while positioning the magnetic tape T at a specific machining position on a tape flattener 30 and conveying it along the longitudinal direction (arrow X) by a tape conveying means 24 forms a machining line for reducing accompanying air is formed on the magnetic tape T with a laser beam emitted by an optical system having a light source 12, a multi-lens part 22, etc. A dust collecting means composed of an ion wind supply nozzle 102 which makes ion wind act to the magnetic tape T and a dust nozzle 104 which collects dust electrostatically charged by the ion wind supply nozzle 102 is arranged nearby the machining position. This dust collecting means electostatically charges and collects the dust produced nearby the machining position.</p> |
