| 摘要 |
<p>Any defect of a board fabricated through a drawing step executed by a drawing device attributed to Gerber data is prevented. Gerber data of vector form representing a wiring pattern drawn directly on a board is captured before it is developed into drawing raster data by a RIP processing (100). Thresholds for check are set depending on the resolution of the drawing and the type of the photosensitive material on the board (102, 104). Check for presence/absence of any arc portion the circumference length of which is below a threshold th1, presence/absence of any arc portion the radius difference of which is below a threshold th2, presence/absence of any pin-hole portion the area of which is equal to or larger than a threshold th5, presence/absence of ay pattern the width of the portion overlapping with an adjacent pattern of which is below a threshold th6, and presence/absence of any pattern the spacing with an adjacent pattern of which is below a threshold th7 is conducted (106 to 176). If an error is detected, a Gerber error file for indicating an error portion is created and the error portions are displayed on a display (182, 184).</p> |
