| 摘要 |
PURPOSE:To execute printing with high accuracy with a small-capacity laser transmitting device by adopting the constitution successively providing a polygon mirror scanner, a galvanomirror scanner, a pass scattering type liquid crystal mask, and optical fiber aggregating lens on a laser optical path. CONSTITUTION:The laser beam S transmitted from the laser transmitting device 1 is projected to the polygon mirror scanner 2 and is reflected by having a width in an X-Y direction. The reflected laser beam is made incident on the galvanomirror scanner 3 and is reflected by having a width in a Y-Y direction, by which the laser beam is scanned in vertical and horizontal directions and is projected over the entire surface area of the transmission scattering type liquid crystal mask 4. Graphics and characters are formed on this liquid crystal mask 4. Only the laser beams transmitted through the sections corresponding to the graphics and characters arrive at an engraving surface 6 through the optical fiber aggregating lens 5 to inscribe these characters. The high-speed overlap printing is possible in this way and since the transmission losses by deflection are eliminated, the high-accuracy printing is executed with the small- capacity laser transmitting device. |
