Color Copy Specification and Innovation (I)

For color reproduction, the final color effects of prints are assessed by visual effects. Therefore, to reproduce high-quality prints, in addition to the necessary specifications for the process, innovations in the process should be strengthened.

1. Specification is the Premise and Foundation of Innovation

There are many variable factors in the process of color reproduction. The faithful reproduction of printed materials is constrained by many factors such as equipment, raw materials, and operator level. Therefore, it is necessary to stabilize various variable factors as much as possible and determine the appropriateness on the basis of the standardization. The craft data. Standardized operations include: calibration of scanners, calibration of computer screens, linearization of imagesetters, and standardized operation of proofing proofing. By standardizing the above process operations, the process conditions are relatively stable, and the best work for each process is determined. Data range, in order to restore the original tone and color to the maximum extent, improve the quality of plate making as a whole, give full play to the superiority of the equipment, and increase production efficiency.

2. The "fuzziness" of color reproduction provides "creative space" for innovation

(1) Vagueness of original tone

The gradation characteristic of a manuscript is the speed at which the density between the bright tone, the intermediate tone, and the dark tone increases as the density of the original is gradually increased.

1 Different types of manuscripts have different tone characteristics, such as the standard density range of the transmitted manuscript is 30-2.70, the standard density of the color photo is 0.05-2.20, and the standard density of the printed manuscript is 0 .05-2.20. The tone characteristics of the copy must highlight the gradation characteristics of different types of manuscripts.

2 If the exposure is incorrect during shooting, the resulting tonal characteristics are different. For example, when the exposure is insufficient (or overexposed), the resulting tones are too flat (or too large). When copying, compensation must be made to compensate for the lack of original tone characteristics. Achieve the best.

(2) Blurribility of the original tone

The tone of the color is defined as the basic tone of the manuscript. The total color tone is the color tendency of the picture, and plays a dominant role in the picture. The hue is divided into brightness and darkness. There are cold, warm and midtones in terms of warmth and coldness. When copying, the copy curve can only be adjusted with emphasis on the basis of grasping the original tone, for example, when dealing with cold-colored originals. C version should not be appropriate for light, dark, M version should be appropriately lighter; when dealing with warm-colored manuscripts, C, M version should be properly deepened, C version is appropriately reduced.

The processing of the color-originated manuscripts must be adjusted according to whether the high, medium, or low tone of the manuscript is a partial color cast or an overall color cast, and the impression color and the skin color should be appropriately adjusted on the basis of the aesthetic taste. (to be continued)