| 摘要 |
An original to be copied is laid face down upon a transparent support. A light-sensitive semiconductor element moves through a charging station, an expsoure station at which the element is discharged by incident image light from the illuminated original, a developing station, and an image transfer station at which the developed image on the element is transferred to copy paper. Lines, paragraphs, or other such sections on the original are selected for copying. An auxiliary discharging arrangement is operative for discharging those sections of the semiconductor element corresponding to non-selected sections on the original as such sections of the semiconductor element move through a blanking-out location intermediate the charging arrangement and the developing arrangement. The operation of the auxiliary discharging arrangement is controlled by a control arrangement which coordinates the electrostatic blanking out of sections of the semiconductor element with the earlier selection of the lines, paragraphs or other such sections of the original to be copied. The selection of lines, paragraphs or other such sections on the original for copying can be changed at will with respect to number, size, location and combinations.
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