Set the trapping in the [Trapping] pane.
Trapping is a function for expanding one of the abutting colours a little to create an overlapping portion for printing so that the white gaps caused by separation offset can be minimised.
The trapping function can be set for each job, section, and page. In the [Job Structure] pane of Job Element Manager, select the setting unit from [Job Description], [Section], and [Page] in advance.
When [Device Parameters] - [Disable Trapping] checkbox is selected in [Job Workflow Manager] - [RIP Proof], the trapping settings are disabled.
The trapping settings are applied to the rasterising process in XMF. The trapping settings are not embedded PDFs output with [PDF Export].
When outputting to [Jet Press W]/[J Press W], the trapping settings are disabled.
ID | Setting | Description |
---|---|---|
1 |
Turn Trapping On |
Check the checkbox to enable the trapping settings. Clear the checkbox to disable the trapping settings. Caution
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2 |
Ignore Source Document Trapping |
Check the checkbox to disable the trapping settings of input data. If the setting is changed, the [Trapping Confirmation] dialog is displayed. If you click [OK], the trapping settings configured in the section or page settings are changed to those for the job settings. Clear the checkbox to enable the trapping settings of input data. If the setting is changed, the [Trapping Confirmation] dialog is displayed. If you click [OK], the trapping settings of [Top Level] in the section or page settings are changed to the trapping settings of the job settings, and the trapping settings of the input data are imported to [Region 1-4]. Note
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3 |
Number of Colorant Zones |
This setting is fixed to 0, and cannot be changed. |
4 |
Suppress Trapping at Page Boundaries |
Check the checkbox to perform trap processing within the page boundaries only. Note
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5 |
Trapping Region |
If a trapping region is set in the input data, the trapping region can be selected. Note
Top Level: Displays the trapping settings of the input data that apply to regions other than [Region 1-4]. Note
Region 1-4: Displays the trapping settings of the input data that apply to the selected region. Note
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6 |
Trap Region Extent |
If [Trapping Region] - [Region 1-4] is selected, the width and height of the selected trapping region is displayed. Note
|
7 |
Default |
Set the trap width of line art or text objects of all colours except 100% black. Note
|
8 |
Black Factor |
Set the trap width of all objects of 100% black. Enter the scale of the trap width set in [Default]. Note
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9 |
Image |
Set the trap width of image objects of all colours except 100% black. Note
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10 |
Join Style |
Set the shape for the outer boundaries of the places to join. Select the shape from [Bevel], [Mitre], and [Round]. Each of the shapes is shown below. Bevel
Mitre
Round
|
11 |
End Style |
Set the shape of the portion where objects in 3 directions overlap. Select the shape from [Mitre] and [Overlap]. Mitre: Changes the shape so that an end of an object is not over the place of intersection. Overlap: Wraps the end of the lightest object around the point where the 3 objects intersect. |
12 |
Trap Placement |
Set the placement for when you trap line art and text objects to image objects. Select the placement from [Centre], [Choke], [Normal], and [Spread]. Centre: Creates traps that straddle the boundaries between line art and text objects and image objects. Choke: Creates traps that cause line art and text objects to overlap image objects. Spread: Creates traps that cause image objects to overlap line art and text objects. Normal: Creates traps that perform either choke or spread processing depending on the density of the abutting objects. Note
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13 |
Trap Objects to Images |
Check the checkbox to create traps at the boundaries between line art and text objects and images in accordance with the setting of [Trap Placement]. Clear the checkbox to not perform the trap processing. |
14 |
Trap Images to Images |
Check the checkbox to create traps between image objects. Clear the checkbox to not perform the trap processing. |
15 |
Trap Images Internally |
Check the checkbox to create traps at the boundary between colour separations on image objects. Clear the checkbox to not perform the trap processing. |
16 |
Trap 1-Bit Masks |
Check the checkbox to create traps that trap 1-bit images to the abutting objects. Clear the checkbox to not perform the trap processing. |
17 |
Step |
A trap is created when a colour change exceeds the set threshold value. Note
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18 |
Black Density |
Inks with a neutral density of the set value or lower are considered to be black. If you want a dark spot ink to use the same trapping settings as black, set that neutral density. |
19 |
Trap Colour Reduction |
Set a percentage to restrict the amount of inks of a portion where a trap is generated. The amount of inks of a portion where a trap is generated between light colours is restricted to the set percentage. For example, in the case of pastel colours, this prevents creating a trap that has a higher density than either colour. If this is set to 100%, the colour of the two abutting colours that has the highest density is selected for the CMYK values that make up the trap colour. A lower value makes the colour lighter. If this is set to 0%, the neutral density value of the trap colour becomes the same as that of the colour of the two abutting colours with the highest neutral density. |
20 |
Black Colour |
The trap width set in [Black Factor] is applied to black objects with a density of the set value or higher. Note
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21 |
Sliding Trap |
Set the percentage for the difference between the neutral density values of abutting colours. Enter the percentage from 0 to 100%. A trap is generated from the darker side of a colour edge toward the boundary line with the set value as the boundary value. Sliding the trap position smoothly from the lighter colour to the darker colour creates a trap that straddles the boundary line between the colours to move the overlapped portion. Note
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22 |
Trapping Order List |
Set whether or not to create traps, and set the trap order. If a checkmark is displayed in [Trapped] of an item in the list, a trap is created. If it is set to [ |
23 |
Selected Ink Ink Order |
When you select a colour separation in the list, the name of the selected colour separation is displayed for [Selected Ink], and the colour order number is displayed in [Ink Order] and can be set. Note
Caution
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If settings configured in the job settings are changed in the section or page settings, the changed places are displayed in orange in the job settings. If at that time the settings are changed in the job settings, the setting details of the section and page settings are changed to those of the job settings. Furthermore, when the details set in the page settings are changed in the section settings, the setting details of the page settings are changed to those of the section settings. In this way, the trapping settings increase in priority in order of page settings, section settings, and job settings.
If different trapping settings are set for each page and then imposition is set, the trapping settings are applied on each page even when the pages are arranged on the same imposition.