HQ-510 RIP linearization adjustment practice
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HQ RIP is used by several vendors as a soft RIP and is now used by many printers and output centers in China. Since the HQ RIP is an English menu, it is troublesome for the user. Linearization adjustment is a common task in the use of RIP. Here we introduce the HQ-510 RIP linearization adjustment.
After the developer concentration, the fixing temperature time and the light value adjustment of the photo-aligner are completed, set the page in RIP, pay attention to the precision and dot shape to be adjusted, different precision, dot shape, and negative film. The linearization data is different. Then click on the "Print Calibration" menu under the menu "Output".
Note that in this interface, "Print uncalibrated target" means that the output is unadjusted, and "Print calibrated target" means that the adjusted curve is output. When doing linearity for the first time, first select the precision you want to output in the box under "From Page Setup(s)" (that is, the accuracy determined in the page setup), and then select the output uncalibrated target (Print uncalibrated target). . The linearization test strip of the following figure will be output in the imagesetter. The actual dot percentage in the box below each displayed value was measured using a transmission densitometer and recorded. (The "Uncalibrated Target for device '5055': uncalibrated" line at the top of the test strip indicates that the test strip is output from the device driver name "5055", the linearized data has not been adjusted; the text of the lower part indicates the output. Accuracy, line number, dot angle, dot shape; "Max/Min" and the lower black and white frame are the solid and blank parts. Before measuring the dot percentage, the two frames can be used to measure the solid density and clear the density meter on the film. The middle of the film is the area where the percentage of dots needs to be measured. The number of 0.0-100.0 is the percentage of the dot points that should be reached for this dot. The area with the dot below is the density meter measurement area.)
When there is no option available in dialog 1 for the first linearization, you need to press the "New" button to create a new one. Before you press to check whether the "Device" item is placed on the imagesetter you built (how to create a new "Device" will be mentioned in a future article), the selection of the "Color Space" item is based on the RIP required for the release. The color separation is also determined by the color separation in the hairline software (generally, there is no need to separate colors in the RIP, and the color separation can be performed in the distribution software. This item is also selected in the page setting, refer to the settings) The linearization data used by the two is different. For example, in the color distribution software, "Color Space" selects "Monochrome" (monochrome), and after clicking "New", the following interface appears: Figure 4.
In this interface, "Resolution" indicates the required precision, which is consistent with the accuracy of the previously set page settings. The "Vertical" table is in the vertical direction, and the "Horizontal" table is horizontal. There is no special requirement for the accuracy of the two directions. "Dot shape" table dot shape, this selection should also be consistent with the previous page settings. The number of network lines corresponding to the selected precision of the "Screen freq" table is generally: 1200dpi corresponds to 75-100lpi, 2400dpi corresponds to 106.4-180lpi, and 3000dpi corresponds to 120-205lpi. When the accuracy of 3000 dpi needs to output a line number of 100 lpi, it is different from the linearized data used for the above line number, and it is necessary to do it alone. The “Use for Pos & Neg” table applies this linearized data to both the negative and positive films. Although this item is selected, it has been mentioned in actual use that the same linearized data is not available for the negative film. "Name" is to name this linearized data. The principle of naming is: try not to use Chinese; the name should be easy to identify and easy to understand. It can be named as follows: precision - dot shape - film brand, such as AGFA film, 2400dpi round square point linearization data can be named: 2400-Eud-AGFA. The “Channel” table outputs monochrome or four colors, just select “Gray”. The “Measurements as” table appears as a negative or positive film when measuring. Generally, “Positive% Dot” is selected as the positive dot. “The Negative media table uses a negative film. This item is only used when linearizing the negative film. “Force Solid Colors” select this to use this linearized data for spot colors.
The values from 0.0 to 100.0 appearing below these menus correspond to the percentage of dots from 0% to 100% in the linearized test strip, and the actual dot percentage measured from the linearized test strip is entered into the box below. In the bottom row of the interface, “Smooth” is smooth. After the curve adjustment is completed, press this button to make the dot compensation more rounded (you need to press this button after all the data is entered); “Clear” table will be Enter the value to clear; "Reset" is reset; "Import" is input (this is basically not used).
After the setting of this interface is completed, press "OK" to exit the interface shown in Figure 4, return to the interface shown in Figure 3, and the linearized data just named appears in the dialog box 1. In the box, the "Name" table linearizes the data name; the "Resolution" table linearizes the precision of the data; the "Dot" table linearizes the dot shape of the data; the "Freq" table linearizes the number of lines controlled by the data; "Table linearization data is selected for both yin and yang; "Status" indicates whether the linearized data has been adjusted and used. The "D" table is displayed. This linearized data has not been adjusted. The "E" table has been linearized. Adjusted, "U" table This linearized data has been adjusted and used. After the check is correct, click "OK" to complete the linearization data setting and exit the interface shown in Figure 3. At this time, it is necessary to test the linearized data. Then open the interface shown in Figure 2, select the previous precision, this time you need to select the Print calibrated target, and the imagesetter linearizes the test strip (the upper line of text changes to "Calibrated Target for device '5055': The calibrated table has been adjusted for this linearization test strip. The density of the outlet is measured using a densitometer. The actual measured value and the linearized test strip display a value range of 1% to 2%.
In the interface shown in FIG. 3, "Edit from uncalibrated target" indicates that the edited curve has not been adjusted, and "Edit from calibrated target" indicates that the adjusted curve is edited. The choice of these two items corresponds to whether the linearized test strip is a corrected curve. For the first linearization correction, select “Print uncalibrated target” in the interface shown in Figure 2. After linearizing the test strip output, you need to click “Edit” in the interface shown in Figure 3. From uncalibrated target; and select "Print calibrated target" when outputting again, linearize the test strip output, if the dot percentage actual measured value and the linearized test strip Each column shows a large value error. You need to click “Edit from calibrated target” to re-edit the data. Click “Edit from calibrated target” to display the same interface as that shown in Figure 4. The editing method is the same as the method described above. Input the measured data into the box and click “Smooth”. New is to complete the editing work. Then repeat the above work until you are satisfied. In general, HQ RIP only needs to edit “Edit from uncalibrated target” once, and “Edit from calibrated target” can get good linearized data.
In addition, when changing the film of different brands, it is necessary to start from the output uncorrected curve, and when the developer liquid is changed or the linearization curve is adjusted every day, it is only necessary to start from the output corrected curve. The HQ-310 RIP linearization adjustment is basically the same as the HQ-510 RIP. You can refer to the above steps and interfaces.