Trapping processing in digital printing (middle)

Second, automatic "auto trap" (Easy trap) mode
1. In the Merchant RIP program, select the Configure RIP... option from the QM-DI-RIP pull-down menu. The Connigig RIP dialog box appears.

2. Click on the "Extras" item in the window in Figure 22 to open the "Configure RIP Extras" window. Select "EasyTrap", click "Add" button, "Enable Feature" dialog box appears, enter the license number in the input box, confirm the exit. In FIG. 23, the state of the "Enable" column corresponding to "Easy Trap" can be switched between "Yes" and "No".

3. When you close the "Configure RIP Extras" and "Configure RIP" dialog boxes, the "Easy Trap" function mode is ready for use.

Third, trapping parameter settings

Trapping parameters can be set in the trapset. Based on different trap widths, there are three factory trapsets:

·Light narrow trap width

·Mid (moderate) trap width

·Heavy Wide trap width

The trapset can be copied, modified or preset (set according to the characteristics of the page setup or calibration)

Start/preset trapsets

Select "Trapping Manager" from the "OutpUt" drop-down menu. The "Trapping Manager" dialog appears. There are already three factory default settings.

Select the default trap settings name;

Click "Edit" to reset or edit the trapping parameters, or click "New" to create a new trapping setting name;

After selecting "Edit" or "New", the "Trap Specifications" dialog opens.

Name: Enter the trapping name in this box;

Centerline Iuminance threshold: If this box is activated, traps will be generated between two adjacent colors. Enter the difference in brightness of the adjacent objects in the input box.
Trap widty/stroke width limit: Enter the limit percentage between the desired trap width and the width of the retraction width.

Auto choke superblbCk: If this box is activated, the trap width of the color values ​​of C, M, and Y components will be reduced accordingly. This setting applies only to text and objects using super black;

Normal trap width: Enter the trap width in this box;

Blacsk trap width: Enter the black trap width in this box;

Image/vignette trap width: Enter the trapping value of the object that intersects the picture and the gradient in this box;

Text<...pts trap width: Enter the font size in this box. All characters whose size is less than this limit will use the trap width set in the text. Units: Select the unit of measure;

Trap threshold: The input value in this box determines the threshold for trap generation. For different component colors, enter the percentage of difference between adjacent colors.

Objects which Intersect images/vignettes (objects that intersect the picture and the gradient): According to the object that intersects the picture and the gradient): Select the trapping technique that creates the trap based on the object that intersects the picture and the gradient. The available options include external expansion, indentation, centerline, automatic mode (automatically select externally expanded or collapsed according to the brightness of the color) and no trapping. Enter the width in “Image/vignette trap Width”.

Text which Intersects images/vignettes: Select the trapping technique to be used in the drop-down box. The options are External, Indent, Centerline, Auto (Automatically selected based on the height of the color. (Extend or shrink) and trapless, enter the width value in "Image/vignette trap width".

Trap color, select one of the three forms of trapping color in the drop-down box. Trapping is generally generated by performing color calculations according to standard settings based on the color components of adjacent objects. If the printing effect of the trapping color has higher saturation, each color value will be reduced according to the "Reduce" setting of this box. The appropriate percentage value is controlled in "Option" and the "Highlight" setting It is generally used only for inspection and proofing. With this setting, all traps can be clearly displayed on the print in a single color mode.

Option: When this option is selected, the Trapping Ontion dialog box appears. In the "Trap Reduceiltons" field, enter the percentage value to be reduced for each color value.

In the "Image & Vignette Color" area, enter the percentage value of the trapping color for the picture and the gradient.

"Do not trap jobs with more than 2 items": If this box is activated, the trapping value of each object will be calculated during the interpretation process. If the number of objects exceeds the highest input value, the trap calculation will stop. In the "QM-DI-RIP" window, the message "The number of trapping objects to be calculated exceeds the set maximum value" will appear.

After making various settings in the window, click "OK" to save and exit.