| 摘要 |
PROBLEM TO BE SOLVED: To output images in correct directions at the time of both-face printing and at the time of reduced layout output by optically scanning an original, judging the character area of input images based on obtained image signals and detecting the direction of the original. SOLUTION: For the image signals from a CCD, after dispersion among picture elements is corrected by a shading correction circuit 3101, secondary differentiation is performed and an image edge is emphasized in an edge emphasis circuit 3102. Then, in a variable power circuit 3103, a data thinning processing at the time of reduced copying is performed and data interpolation at the time of magnified copying is performed. Further, after desired density conversion is performed by a density correction circuit 3104, binarization is performed in a binarization circuit 3105. The binarized image signals are transmitted to a laser unit or kept in a page memory 3108. In a reduced layout, the image signals are edited on the page memory 3108 by the control of a memory control circuit 3107. Also, a direction discrimination part 3106 judges the direction of the original and the writing direction of a document and transmits judgement information to a CPU. |
