The color newspapers are usually printed on newsprint. The papers are loose and the whiteness of the paper is low. When using a rotary printing machine, the speed is fast. The dot enlargement rate during printing is 30%. In addition, people require the printing of colorful newspapers to be vivid and clear. The characteristics determine the particularity of scanning color picture pictures. Here are some experiences on how to use the DT-S1030AI scanner to produce high-quality color newspaper pictures:
I. Introduction of DT-S1030Al Scanner The DT-S1030AI Scanner is a drum scanner produced by Dainippon Screen, with an optical resolution of 5200dpi, a scan density range of 0.0 to 4.0, a scan rate of 1200r/min, and a maximum scan size. 10in'12in, with on-board imaginary function and AI automatic setting function, can preset various sizes of sharpness. It can scan translucent and reflective drafts, and its accuracy fully meets the requirements of producing high-quality color newspaper pictures. The scanner uses a SCSI interface to connect to a Mac. The operating system must be a version of 7.0.1 or higher, and the memory requires more than 64MB. DJ-S1030AI scanner can automatically analyze the original, correct color cast, adjust the highlights, dark tone levels, even without the use of experienced operators can use artificial intelligence settings to create a better color newspaper pictures.
Second, the scanner basic operation Start DTS SCan, such a window will appear.
2. Perform pre-scan.
3. Select A1 AI Setup under the Option menu.
4. Draw the analysis range, click AI Setup, the scanner will automatically give the original minimum density and maximum density.
5. Set the scanning elements, such as resolution (magnification), mode, document type, sharpness of the Window > Color Setup, highlights and dark points.
6. Select AI channel.
7. Defining the scan range and performing the scan. It should be particularly pointed out that attention should be paid to the difference between the analysis range and the scanning range. The scope of the analysis range must include the brightest and darkest parts of the original, but it must not exceed the original, otherwise the original density given will not be accurate; the scanning range is All originals must be included, otherwise the scanned image will be incomplete.
three. Scanner and Mac Contact Information 1. Setting the Scanner There is a Scanner Setup under the Preference menu. This command sets the scanner information that connects the Mac (see Figure 2).
(1) Set the SCSI address.
(2) Set the value when the CMYK dot value is 100% (Dot l00% range is 191 to 225) to 255.
(3) Set the value of the CMYK dot value to 0% (Dot 0% range is 0 to 64) to 0.
(4) Setting the transmission speed This data should be set according to the peripherals. When the scanning transmission speed is set to the highest, the scanning head cannot be automatically returned during the scanning process. In normal circumstances, the preferred value is 200 kb/s.
(5) There are two choices for setting efficiency: standard and high. Normal selection criteria. If you choose high efficiency, there will be jump and scan image data changes.
(6) Setting the scanning speed When scanning a reflection document with a certain thickness, the scanning wave will generate high vibration and affect the image quality. In this case, the scanning speed must be reduced to reduce the vibration. Standard or half speed can be selected.
(7) The set total ink volume is usually in the range of 200% to 400%, and newspapers use 280%.
2. Set Driver Select Driver Setup menu under Preferences.
(1) Selecting the resolution You can choose to directly set the resolution (Direct) or set the magnification (Magnification). When setting the magnification, the scanner automatically gives the scanning resolution according to the required magnification.
(2) When the resolution North is set as the print resolution, the value range is 100 to 2500, and the newspaper is 200 to 250 dpi.
(3) Selecting the scan range There are two options: Scan end or resolution.
(4) Sampling settings Select sampling method for the suction tube: take a single pixel or average image cable, and always select the average.
(5) Select the temporary drive
Selecting the temporary driver will generate a temporary working file.
(6) Select Save Preview, a lower-precision preview will appear.
four. Select Mode Color scanners have two image modes: RGB or CMYK. RGB is a three-primary color light, using color additive color theory, its wide color gamut, bright colors. TV screens are RGB displays. If the scanned image is intended for transmission over the Internet, production of a television program or simply a screen display, RGB is better. While the images we scan are often used to make film and print color newspapers, we should use the CMYK mode for scanning. CMYK adopts the principle of subtractive coloration, its color city is narrow, and the CMYK mode is used when scanning to get closer to the printing conditions. In addition, since CMYK four-color inks are used in printing, the CMYK four-color dots combination data has certain rules to follow.
After selecting CMYK, you must set the color according to the paper. The conventional values ​​are high light point CMYK values ​​of 5%, 3%, 3%, and 3%, respectively, and darkness values ​​of 95%, 85%, 85%, and 80%, with a total mileage of 355%. The color newspaper is printed on newsprint, its total ink volume is 280%, and the dark tone value CMYK is set to 80%, 70%, 70%, and C%. After the AI ​​is used, the level curve and color correction curve are all standards. If you need to make these two adjustments, you need to operate in Photoshop software.
Fifth, level and color correction The gradation correction manuscripts can usually be divided into three categories: one is the standard manuscript, which is characterized by normal contrast, and reasonable distribution of high, medium, and low gradations. The second category is overall thin originals. The third type of manuscript is characterized by underexposure, high density contrast and heavy tone. For standard manuscripts, no adjustment is required after scanning with artificial intelligence; for thin manuscripts, deep copying is needed; for dark manuscripts, bright copying is required. In addition, according to Histogran (bar graph) in Photoshop to help determine the level of the manuscript distribution, targeted level adjustment. In Photoshop, Level and Curve are often used for level adjustment. Level can be used to adjust highlights, shadows, and midtones, and is limited to 3 points. Therefore, Curve is used to adjust in the work. On the Curve curve, it can be anywhere from 0 to 100%. Make adjustments, so the adjustment accuracy is high. Since manuscripts are widely different, they must also be adjusted according to different content to highlight topics.
2. The color correction color picture requires bright and bright colors. It should be mainly based on the three primary colors. The black version should be used as the outline, and the primary colors and the inter-colors should be used more or less. According to this requirement, after level adjustment, a certain color version can be deepened or reduced, or Color Balance can be used to adjust the color balance and Hue/Saturation can be used to adjust the hue and saturation. In addition, according to the characteristics of newsprint, the color saturation should be appropriately increased, the red color should be noticeably red, and the green color should be dazzling. Due to the large number of character manuscripts in the color newspaper pictures, adjustments can be made based on the color appearance of the human skin. Colorful newspaper pictures can be more processed in accordance with the printing conditions, and do not have to be completely faithful to the manuscript, because the newspaper is for most people to read, it should consider more people's subjective evaluation, in line with people's aesthetic taste.
6. Sharpness There is a sharpness option in the scan color setting window 4. There are six options: OFF, VerySoft or Normal, Soft, Very Sharp. Sharp or Very Sharp options are generally used when the original is a color photograph. When the original is a print, the Very Soft, Soft, or Normal rib option is used. It must also be considered in combination with the sharpness and graininess of the original. For blurring of photos due to inaccurate focus or other reasons during shooting, use the Filter/Sharpen/Unsharp Mark in Photoshop to emphasize the skin.
In summary, the use of DT-S1030AI scanner to scan color picture, must be combined with scanners, manuscripts, printing conditions and other factors, comprehensive analysis, can produce high-quality color newspaper pictures.
I. Introduction of DT-S1030Al Scanner The DT-S1030AI Scanner is a drum scanner produced by Dainippon Screen, with an optical resolution of 5200dpi, a scan density range of 0.0 to 4.0, a scan rate of 1200r/min, and a maximum scan size. 10in'12in, with on-board imaginary function and AI automatic setting function, can preset various sizes of sharpness. It can scan translucent and reflective drafts, and its accuracy fully meets the requirements of producing high-quality color newspaper pictures. The scanner uses a SCSI interface to connect to a Mac. The operating system must be a version of 7.0.1 or higher, and the memory requires more than 64MB. DJ-S1030AI scanner can automatically analyze the original, correct color cast, adjust the highlights, dark tone levels, even without the use of experienced operators can use artificial intelligence settings to create a better color newspaper pictures.
Second, the scanner basic operation Start DTS SCan, such a window will appear.
2. Perform pre-scan.
3. Select A1 AI Setup under the Option menu.
4. Draw the analysis range, click AI Setup, the scanner will automatically give the original minimum density and maximum density.
5. Set the scanning elements, such as resolution (magnification), mode, document type, sharpness of the Window > Color Setup, highlights and dark points.
6. Select AI channel.
7. Defining the scan range and performing the scan. It should be particularly pointed out that attention should be paid to the difference between the analysis range and the scanning range. The scope of the analysis range must include the brightest and darkest parts of the original, but it must not exceed the original, otherwise the original density given will not be accurate; the scanning range is All originals must be included, otherwise the scanned image will be incomplete.
three. Scanner and Mac Contact Information 1. Setting the Scanner There is a Scanner Setup under the Preference menu. This command sets the scanner information that connects the Mac (see Figure 2).
(1) Set the SCSI address.
(2) Set the value when the CMYK dot value is 100% (Dot l00% range is 191 to 225) to 255.
(3) Set the value of the CMYK dot value to 0% (Dot 0% range is 0 to 64) to 0.
(4) Setting the transmission speed This data should be set according to the peripherals. When the scanning transmission speed is set to the highest, the scanning head cannot be automatically returned during the scanning process. In normal circumstances, the preferred value is 200 kb/s.
(5) There are two choices for setting efficiency: standard and high. Normal selection criteria. If you choose high efficiency, there will be jump and scan image data changes.
(6) Setting the scanning speed When scanning a reflection document with a certain thickness, the scanning wave will generate high vibration and affect the image quality. In this case, the scanning speed must be reduced to reduce the vibration. Standard or half speed can be selected.
(7) The set total ink volume is usually in the range of 200% to 400%, and newspapers use 280%.
2. Set Driver Select Driver Setup menu under Preferences.
(1) Selecting the resolution You can choose to directly set the resolution (Direct) or set the magnification (Magnification). When setting the magnification, the scanner automatically gives the scanning resolution according to the required magnification.
(2) When the resolution North is set as the print resolution, the value range is 100 to 2500, and the newspaper is 200 to 250 dpi.
(3) Selecting the scan range There are two options: Scan end or resolution.
(4) Sampling settings Select sampling method for the suction tube: take a single pixel or average image cable, and always select the average.
(5) Select the temporary drive
Selecting the temporary driver will generate a temporary working file.
(6) Select Save Preview, a lower-precision preview will appear.
four. Select Mode Color scanners have two image modes: RGB or CMYK. RGB is a three-primary color light, using color additive color theory, its wide color gamut, bright colors. TV screens are RGB displays. If the scanned image is intended for transmission over the Internet, production of a television program or simply a screen display, RGB is better. While the images we scan are often used to make film and print color newspapers, we should use the CMYK mode for scanning. CMYK adopts the principle of subtractive coloration, its color city is narrow, and the CMYK mode is used when scanning to get closer to the printing conditions. In addition, since CMYK four-color inks are used in printing, the CMYK four-color dots combination data has certain rules to follow.
After selecting CMYK, you must set the color according to the paper. The conventional values ​​are high light point CMYK values ​​of 5%, 3%, 3%, and 3%, respectively, and darkness values ​​of 95%, 85%, 85%, and 80%, with a total mileage of 355%. The color newspaper is printed on newsprint, its total ink volume is 280%, and the dark tone value CMYK is set to 80%, 70%, 70%, and C%. After the AI ​​is used, the level curve and color correction curve are all standards. If you need to make these two adjustments, you need to operate in Photoshop software.
Fifth, level and color correction The gradation correction manuscripts can usually be divided into three categories: one is the standard manuscript, which is characterized by normal contrast, and reasonable distribution of high, medium, and low gradations. The second category is overall thin originals. The third type of manuscript is characterized by underexposure, high density contrast and heavy tone. For standard manuscripts, no adjustment is required after scanning with artificial intelligence; for thin manuscripts, deep copying is needed; for dark manuscripts, bright copying is required. In addition, according to Histogran (bar graph) in Photoshop to help determine the level of the manuscript distribution, targeted level adjustment. In Photoshop, Level and Curve are often used for level adjustment. Level can be used to adjust highlights, shadows, and midtones, and is limited to 3 points. Therefore, Curve is used to adjust in the work. On the Curve curve, it can be anywhere from 0 to 100%. Make adjustments, so the adjustment accuracy is high. Since manuscripts are widely different, they must also be adjusted according to different content to highlight topics.
2. The color correction color picture requires bright and bright colors. It should be mainly based on the three primary colors. The black version should be used as the outline, and the primary colors and the inter-colors should be used more or less. According to this requirement, after level adjustment, a certain color version can be deepened or reduced, or Color Balance can be used to adjust the color balance and Hue/Saturation can be used to adjust the hue and saturation. In addition, according to the characteristics of newsprint, the color saturation should be appropriately increased, the red color should be noticeably red, and the green color should be dazzling. Due to the large number of character manuscripts in the color newspaper pictures, adjustments can be made based on the color appearance of the human skin. Colorful newspaper pictures can be more processed in accordance with the printing conditions, and do not have to be completely faithful to the manuscript, because the newspaper is for most people to read, it should consider more people's subjective evaluation, in line with people's aesthetic taste.
6. Sharpness There is a sharpness option in the scan color setting window 4. There are six options: OFF, VerySoft or Normal, Soft, Very Sharp. Sharp or Very Sharp options are generally used when the original is a color photograph. When the original is a print, the Very Soft, Soft, or Normal rib option is used. It must also be considered in combination with the sharpness and graininess of the original. For blurring of photos due to inaccurate focus or other reasons during shooting, use the Filter/Sharpen/Unsharp Mark in Photoshop to emphasize the skin.
In summary, the use of DT-S1030AI scanner to scan color picture, must be combined with scanners, manuscripts, printing conditions and other factors, comprehensive analysis, can produce high-quality color newspaper pictures.
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