| 摘要 |
PURPOSE:To eliminate the density grade difference in printing in spite of the density difference in an original, in an endless electronic processing apparatus by correcting the density signal of the other end by the density signal of the extention part of the original. CONSTITUTION:The original is the picture continuing at a front end A and a rear end B. The same picture as on the AD zone is figured on the extention part BC zone of the rear end B. The density grade difference exists between A and B, but does not exist before and behind B. the density signal can be obtained by scanning L1-Ln of this original, and the correction of the grade difference between A and B is made so as to correct the end A mainly due to the signal of the BC zone, making D point as 100% of D signal and correcting the density between those in proportion to the distance. By this means the density grade difference does not appear. |
