Integration of Plate Making and Printing in Management and Addressing Discrepancies
In the field of printing, the coordination between plate making and printing processes is crucial for ensuring high-quality output. These two processes form an organic whole, where the quality of any step in the plate-making and replication process directly influences the overall printing quality. Currently, these processes are often divided into separate units, making it essential for the production department to harmonize their relationship. Achieving this coordination is not only beneficial for implementing production plans but also enhances product quality.
In our printing production unit, the distinct separation between plate making and printing has led to a lack of understanding between the two processes. It is imperative for plate makers to have a comprehensive understanding of various printing conditions to create plates that are suitable for printing. The focus should be on serving the printing process, as the printed product is the final end product.
To address the gap between proofing and printing color sequences, it is essential to maintain consistency. For map printing, the typical color sequence is black-brown, blue-green, with dark colors and smaller dot areas placed before lighter colors and larger dot areas. Ensuring consistency in color sequences between proofing and printing, especially when dealing with other color illustrations and photographs, is crucial to avoid discrepancies.
Discrepancies between proofing and printing can be narrowed down by considering the following factors:
Paper Selection: Choose paper for proofing that aligns with the characteristics of the paper used in the actual printing process, considering factors such as thickness, whiteness, and deformation rate.
Color Sequence: Reverse the color sequence used during proofing to match the printing order, emphasizing darker colors before lighter ones.
Overprinting Methods: Consider the overprinting method during proofing, ensuring it aligns with the wet-trapping method used in printing. For example, complete all color proofing simultaneously to mimic the wet-trapping effect.
Imprinting Method: Adjust the imprinting method to match the circular press configuration used in printing. This involves considering the compression amount of circular press printing compared to flatbed proofing.
Speed Discrepancies: Account for differences in speed between proofing and printing machines. Adjust printing speed, use harder packing, and reduce fountain solution to minimize differences in ink adhesion and transfer between proofing and printing.