| 摘要 |
<p>In the present invention, a color original such as a color reversal film and the like which may be different size (for example, the Brownie, 4" x 5", 35mm) is fitted or stored in the original cassette mounted on the cassette base. The original is read to obtain the whole image data by a transmission type or a reflection type image sensor without catching any flare, and an auxiliary scanning is done sequentially on lines of the original, reading whole surface thereof, so as to output directly the mask plates of C,M,Y and black (K). Because of these procedure described above the operation to produce the mask plates is easily done at a high speed by even an unskilled operator. The operation for scanning the original image comprises two steps of scnning (pre-scanning) the original image in rough and scanning (main scanning) it in detail. The original image is displayed in accordance with data of the pre-scanning and the data of the pre-scanning is stored in a memory. On the basis of the stored data, the condition parameters for the image processing are determined automatically (or manually) and the image output is carried out at a high speed and high efficiency by judging the relationship which is provided by the condition parameters, between the original and the photosensitive material so as to make remarkable improvement in producing the printing mask plates.</p> |
