| 摘要 |
<P>PROBLEM TO BE SOLVED: To engrave into a recording medium with high resolution as well as at high speed while holding cost down. <P>SOLUTION: In shallow engraving, a smooth line can be drawn by engraving by scanning with a laser beam LB between the scanning lines of a laser beam LA. In deep engraving, laser output (power) is increased and, after engraving is performed up to a first depth Y2 with the laser beam LA, engraving is performed up to a second depth Y3 (desired depth Y3 in deep engraving) with the laser beam LB. In other words, with a single exposure head 30, shallow engraving (precision engraving) with high resolution and deep engraving at high speed can be made compatible. <P>COPYRIGHT: (C)2009,JPO&INPIT |
