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Once again, we should treat the manuscript correctly

we know that the analysis of the manuscript is the means, and the purpose is to improve the replication effect and make it excellent. Therefore, after knowing the advantages and disadvantages of the original, corresponding measures must be taken to maintain or correct it. The correct treatment of originals is a long-term experience accumulated by plate makers in the past. Nowadays, with the development from electronic color separation to computer plate making, the age of personnel changes, the older generation abdicates one after another, and the younger generation is dexterous, but it is not enough to analyze the original and how to correct it. As a result, after the version is made, the contrast of the picture is not strong, the main original color is not bright enough, the original has defects, the original does not change, and the characteristics of all kinds of paintings are quite different, so it is necessary to mention the correct treatment of the original again. Although the manuscript has been finalized, the computer can change it. Sometimes, although it is a good manuscript, after careful observation, there are still some parts that can be improved and "modified" that should be modified

the defects of the original, taking the color photos with the most sources, the reproduction of printed matter, and the reverse film as examples, generally include too weak contrast, stuffy middle note, slightly poor definition, incomplete picture, insufficient main color, too gray face, etc. For this kind of manuscript that can still be used, the combination and contrast of colors should be adjusted as a whole or locally according to the color quantities of C, m, y and K displayed on the information board during scanning and computer operation. For example:

1 If the contrast is too weak, you only need to increase and steep the curve of version K as much as possible. The deepest color can be 95%, and the curves of versions C, m and y are still maintained. In this way, the contrast can meet the requirements. Otherwise, in a layout, or even in an album, several images with different contrasts juxtapose or penetrate into it, which will appear dazzling and incongruous

2. If the middle note is dull, the curves of the four color plates should be lowered and steeper except for the high and low ends, so that the middle note can be bright and the layout can reach the normal level reflection. In the past, it was said that the electric extension can have 25 curves for application, but now there are endless curves for computer plate making for us to use

3. Most of the color deviation originals are caused by improper development of the reverse film. But we should not be confused and limited by the defect of color deviation. The chromaticity curves of C, m and Y on the information board shall be corrected to make them balanced

4. The sharpness is slightly poor. For such originals, the fine contrast should be fully done during scanning

5. Then measure whether the resistance of pins 2 and 3 of the amplifier changes? If the screen is incomplete due to the resistance value, on many printed materials, it is often seen that there is a lack of marginal Guan Le around the screen composition, which is mostly manifested in the white cloudless large area of the sky, large pieces of white clothes or large pieces of white walls. Because these parts have no points or lack points after scanning, the painting is incomplete and a corner is missing, which is very inappropriate. In the past, this was remedied by painting the original with fresh water color. Now, as long as you can recognize this defect in computer plate making, you can add a little color of C, m, y or a single c version to this white part after delineation, and process it into a gradient of upper depth and lower lightness at the upper end of the sky. Accordingly, the purpose of remedy is achieved. The color paper can be surrounded by a thin line of one or C, or m, or K to maintain the integrity of the picture

6. The main color is not bright and prominent, and the overall effect is acceptable on some printed materials, but the main color is not prominent enough, such as red flags, red flowers, beautiful women's red lips are not red enough, large areas of the sky are not blue enough, and large pieces of green grass are not green enough. If the operator can analyze the original, he only needs to tick out the range of this area on the screen and increase the main color quantity of this part respectively. It takes a little time, and the final overall effect can be more perfect

7. The face is too gray, which is mostly shown in the photos taken against the light. If you can pay attention to this, as long as you circle the face on the screen and reduce the color of version C more, it can be improved. In the color newspaper printed on paper, the color quantity of version C should be put less or not as much as possible

8. The reproduction of printed matter should not only take measures to remove dust, but also maintain the required clarity. This can be done under the condition of doubling the magnification, because computer plate making is very beneficial to this

9. Chinese painting is a special kind of painting, and it is also a common manuscript in China. Except for the small size of the original painting, which can be scanned directly, most of it has been reproduced into reverse films, so color deviation is also common, especially in ink rhyme and paper color. Therefore, when copying, we must have the understanding of the characteristics of the picture in mind before we can have a definite goal. Blue, tea and purple are common, which can be identified in the white part of the original. Therefore, correcting the background color on the screen to white paper color, ink rhyme without cyan and a little warm color can achieve the purpose of correction. Its hardness is smaller than that of PGA. At the same time, the subtle contrast should not be emphasized that there are two supporting rollers, because excessive will make the picture form woodcut prints, which is not taken by the reader

I remember when I first came into contact with computer plate making, I once preached that "what I see is what I get". Through practice, I know only one, but I don't know the other. Because the screen is a combination of R, G and B colors, while the paper is a synthetic reflection of C, m, y and K inks. Therefore, you must pay more attention to the 4-color values displayed on the information board in your work, and often compare the differences between ink-jet color printing and ink proofing, so as to find out the difference rules, and make you know it over time

it is successful to copy a good original as the original, but on the contrary, it is a failure to copy a poor original as the original, because it fails to fulfill the responsibilities of the plate maker. Because the reader can't see the original and give understanding. From this conclusion, don't be limited by the manuscript. If the manuscript is good, it should be done correctly, while if the manuscript is poor or flawed, it should be corrected wholly or partially during computer operation. It's good to be able to operate the computer for three months, but we still need to be good at analyzing the manuscript and improving the shortcomings of the manuscript. I believe that even with the arrival and promotion of CTP in the future, this will remain unchanged. Raise the quality of the original, change the short of the original, not afraid of not being able to do it, just afraid of not being aware of it. As long as you learn to analyze the manuscript, you can use computer means to remedy it, with your heart in your hand

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