| 摘要 |
<p>PURPOSE:To prevent the life of a photosensitive drum or an exposure head from becoming short when a chart containing a contour line which specifies an area to be drawn, is depicted. CONSTITUTION:CAD data(plotter command) containing a contour and a figure is stored in an input buffer 1, and internal (intermediate) data obtained by an analysis part 2 is shifted in the linear direction of an LED head, based on a reference point P designated by a reference point change part 12, using a contour/figure data shift part 3. Chart data developed into bit map data bar a bit map development processing part 4 is stored in a frame buffer 5. The chart data is read sequentially by a controller 6, and then is supplied set by set to a shift register 8. A sheet replacement detection part 11 detects the replacement of a recording sheet, and a reference point change part 12 changes a reference point P stored in a storage part 10, each time a power supply switch 11 is turned ON, and thereby, allows contour/figure data to shift in the linear direction.</p> |
