| 摘要 |
PURPOSE:To reduce a deviation between marked patterns and to obtain a marking excellent in visibility by providing a source to rotate a 1st rotary mask and a 2nd rotary mask and a phase difference correcting means to correct the phase difference between the rotary masks. CONSTITUTION:The 1st rotary mask 1 is fitted to a rotary shaft 3 and connected with a driving source 4. When the driving source 5 is driven and a pulley 13 is rotated, an annular reel 10 is interlocked and rotated by a belt 14 and, as a result, the 2nd rotary mask 2 is rotated. When the 2nd rotary mask 2 is fixed and the 1st rotary mask 1 is rotated to mark a consecutive number of two figures, a driving signal is given from a controller to the driving source 4 for the 1st rotary mask 1 according to the transferring timing of a material to be treated. When an error is found in the given signal, a speed reducer 20 is interposed as phase difference correcting means respectively at a position to engage the driving source 4 with the rotary shaft 3 and at a position to engage the driving source 5 with a pulley 13. |
