| 摘要 |
PURPOSE:To enable to punch the data hole train or sprocket hole train at the normal position of unpunched tape, by locating the sprocket reference pins at asymmetrical positions at the both sides by taking the punched position as a center. CONSTITUTION:The distance l3 between the guide holes 7 and the reference pin 5 is taken as (r-1)X2.54mm. to punch sprocket hole h1 on unpunched tape 10. Next, the tape is shifted left and the sprocket hole h1 is inserted with the reference pin 4 to punch the sprocket hole h2. Further, the tape is shifted right and the sprocket hole h2 is inserted with the pin 5 to punch the sprocket hole h3. Furthermore, the sprocket hole h3 is inserted with the reference pin 4 to punch the sprocket hole h4 and the sprocket hole h4 is inserted with the reference pin 5 to punch the sprocket hole h5. The punching stated above is repeated to punch (n-1) consecutive sprocket holes, allowing to punch the sprocket hole train in 2.54mm. pitch by using the reference pin 4 on and after n-times. |
