Printing related terminology explanation (4)

Scanner Calibration - Calibration

1. Before using the scanner, it is best to make corrections.
Most scanners come with a set of scanning correction plates.
Take Microtek ScanMaker as an example.
The Agfa IT8 will be included as a bundle (if you have a mask for optional scanning and transparencies).
Additional calibration tablets will be included. )
Start the scanner and warm it up for more than 30 minutes. Follow the manuals of each scanner to correct the reflected draft and the transmitted document.

2. In CorelDRAW's product packaging, a Scannerh Target is included as an example. It can also be used to calibrate or test the accuracy of the scanner.
The correct scanning result should be accurate color and the gray level is clearly structured.

Eliminate scanner's color shift

Sometimes when scanning an image, the phenomenon of color cast may be suspected. At this time, a test can be made to determine whether the scanner causes color cast. If the problem is in the scanner,
A small test of pHOTOSHOP can then be used to correct all images scanned with the scanner.

1. Use the File>New command to create a 15cm x 3cm X 72 dpi file.

2. Press D to return the system to the default of the black foreground and white background colors.

3. Select the Grandity Tool,
The setting mode is Foreground to Background, Type=Liner.

4. Hold down the Shift key and pull a black and white gradient from left to right in the file.

5. Use the Image>Adjust>Posterize command to set the gradient to 11 levels.

6. Get a grayscale table with 11 levels.

7. After printing with the File>Print command,
Then use the scanner to scan and save the printed grayscale table.

8. Open the information panel with the Windows > Show Info command.
Use the mouse to walk over the grayscale image and observe the RGB readings on the information panel.

9. The RGB readings should be the same on each gray level, otherwise the scanner itself is a bit problematic.
Will cause RGB values ​​to produce color shifts.

L0. Open Image>Adjust>Levels
(Or Curves function, adjust the midtone value of each swatch until there is no other color at all.)

11. Press the [Save] button to save the Levels (or Curve) settings.

12. Whenever the same scanner is used in the future, after the scan is completed,
Use the Image>Adjust>Levels command to open the relevant dialog and press the "Load" button.
Push the previously saved scanner-related Levels (or Curves) settings into OK,
You can eliminate the problem of color shift caused by the scanner.
Common terms and terms

1. Substrate: Fill the entire layout with shading.

2. Spread: Zoom in and zoom out across the two layouts.
The horizontal arrangement makes the entire layout look wider.

3. Inverse: To make the picture or text appear more clearly on the darker color blocks,
This function is usually used to make images not be filled in with any features and to be represented in a contrasting manner.

4. Yin Yang Word: To make the text come out clearly in different shades of color,
Use this effect to make text appear darker in light areas and lighter in dark areas.

5. Figure pressure words: One of the effects of layout design often used, the figure in the upper layer in the lower layer, if the graphics overlap,
The overlapping text will be hidden by the picture.

6. The word pressure map: contrary to the effect of the previous description, the word in the upper map in the lower level, if the graphics and text overlap,
The overlapped image will be hidden by the text.

7. Bleeding: In the arrangement of the layout, in order to expand the layout and attract the attention of readers,
And to break the format of the layout border, enlarge the picture to fill some or all of the margins.
Bleeding can avoid white edges at full version.

8. Fade: Reduces the brightness of the entire picture.

9. Counterwork: In two different layouts, arrange the same picture in different directions.

10. Symmetry: The same picture will be arranged in different directions in the same layout.

11. Gradient: Gradual change in the color of a color patch or area from dark to light or from light to dark.

12. Fade: Makes the hue of the picture fade away from the depth. The fading direction can change with your needs.
For example: from left to right, from bottom to top.

13. Go to background: Delete the unused objects and background in the picture to highlight the theme in the picture.

14. Break: Enlarge the picture and break through the layout format on the layout.
Make the layout more lively and changeable and directly attract readers' attention.