Discussion on the Influence of the Technical Level of Photo-distribution Center on the Quality of Color Newspaper (I)

In recent years, laser photocopying technology has developed rapidly, providing strong technical support for the printing of color newspapers. Due to the professionalism of photocopying technology and the large number of digital control processes, the quality of the color newspapers is greatly affected. Here, based on my experience accumulated over many years, I have done a brief explanation of the factors that affect the printing quality of color newspapers.

First, the quality of originals and the level of color used for editing are important factors that restrict the quality of color newspapers.

Newspapers are news media. While paying attention to news, they must pay sufficient attention to the art of color newspapers. The original intention of color newspapers is to increase the artistic quality of newspapers and enhance the readability of newspapers. In the selection of color manuscripts, the use of color, color matching, whether to meet the printing adaptability, has become one of the main factors affecting the overall printing quality of color newspaper. In particular, photos, if emphasis on news but ignore the printing and plate making process requirements, ignoring the artistry, will directly affect the overall quality of newspapers.

The picture is the highlighting of the color newspaper, and even the face of the color newspaper. Colorful, rich layers, clear and vivid pictures (advertisements), to the reader to enjoy the United States. It is hard to imagine that a set of manuscripts with serious color casts, lack of tone levels, and distorted texts will produce wonderful results. The picture (advertisement) must satisfy the printability of the newspaper, and the selected manuscript (advertisement) manuscript shall meet the following requirements: the color is accurate, and the color is not excessive; the size is moderate; the gradation is clear, the resolution is good, and the mana is not color; Bright, rich in color, accurate, vivid: moderate contrast, evenly distributed layers; prints and other secondary manuscripts are best printed on lines above 150 lines, and do not use them at all; digital cameras are inefficient at the moment, levels, and colors Unsatisfactory, and the pixel value is fixed, should be changed to the appropriate size after calculating the prime value, and do not zoom in; network download photo level less, excessive sharpening, color is not allowed, the number of pixels is low, should be used with caution. In addition, in the selection of photos, it is necessary to reach a consensus with the editors. The important factor in guaranteeing the quality of the newspapers is to improve the level of the originals of the pictures.

On the other hand, due to the short period of domestic publication of color newspapers, especially for city-level newspapers, editors (American editors) have little experience in grasping the layout, and they are also one of the factors affecting the quality of color newspapers. There are certain rules in printing color newspapers. Do not follow your wishes. The use of high-speed web offset presses in color newspaper printing has caused the paper tension to exist during printing, and the unique nature of newsprint has led to poor accuracy of overprinting, high dot gain, poor color reproduction, etc. In this regard, the following points should be noted in the photocopying process of color newspaper publishing: 1 Tie color should be concise and clear, especially small-size characters and Song type characters, with single-color or two-color phase pressure as good, must not be multi-color superposition; 2 color to be Bright colors dominate. The newsprint is uncoated and has a background color. The bright color tone is beneficial to the layout with a bright feeling; 3 the color is saturated, the newsprint is rough, and the screen used for printing is thick, and the saturated tone is more eye-catching.

Second, color newspaper pictures (advertisements) scanning, processing is an important part of the quality of color newspapers

Color pictures (advertisements) are the "eyes" of color newspapers. The quality of pictures (advertisements) has an important relationship with the overall feeling of the newspapers. The readers' first look is to see if the pictures look good. After the original is confirmed, it is how to scan and handle it. The types and levels of manuscripts vary from one manuscript to another, and the contents and colors vary widely. It is the central task of the scanning and processing work to complete color picture photos (advertisements) that are consistent and satisfy the printing adaptability. The basic principle of this work is: faithful to the original, higher than the original and strive for uniform style.

1. Picture (advertising) scan

The picture (advertising) scan is the first step in the picture (advertising) processing workflow. It should be as faithful as possible to the original and higher than the original. Several points should be noted when scanning:

1 It is not necessary to pursue high-end newspapers for making color newspapers. However, to meet basic requirements, due to the timeliness of news and the characteristics of newspapers, many newspapers, especially prefecture-level newspapers, use flatbed scanners. Its effect is sufficient for color newspapers. But at least it should be a professional product, with an optical resolution of 800ppi or more, a dynamic range of 2.8D or more, at least 8/24bit grayscale, smart network access, and the best support for the Mac Colorsgnc system and a complete set of Color management system.

2 Determine the corresponding scanning environment based on different originals. The manuscript should be carefully analyzed, such as the original type, level range, black and white fields, color, content, use orientation, use size, etc., as well as analyze the defects and deficiencies of the manuscript and understand the editorial intentions, special requirements, etc., in order to scan and Adjust and compensate in time when adjusting.

3 Scanner parameter settings fundamentally affect the information pickup situation. Scanners must first have a clear and clear understanding of the various parameters of the scanning software, and clearly understand the impact on the print quality. It is necessary to set each parameter carefully according to the conditions of the original document, printing conditions, and editing requirements.