| 摘要 |
PURPOSE:To prevent a particular spot in each contour line on a photosensitive drum or an exposure head from being over used, and thereby making its life long by designing the position of the contour line to be drawn on the photosensitive drum so that it changes on an N number of charts. CONSTITUTION:CAD data containing a contour and a figure is stored in an input buffer 1, and then is converted to internal data by an analysis part 2. In addition, the internal data is shifted to the linear direction of an LED head 9 based on an output value of a counter 10, using a contour/figure data shift part 3. Next, the chart data developed into bit map data by a bit map development/processing part 4, is stored in a frame buffer 5. Further, the bit map data is read sequentially using a controller 6 and then is supplied to a shift register 8. On the other hand, if a chart is completely output, the counter 10 is allowed to increment to shift contour/figure data in the linear direction with the help of the controller 6. |
