Overview of White Choking
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- Use white choking to prevent white ink from peeking out from under the printed design.
- Understand that white peeking can occur due to mechanical misalignment or white ink bleeding or spreading.
- Apply choking to shrink the white underbase during RIP processing.
Adjusting White Choke for a Single Job
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What you need
- Recommended choke value for color substrates: 2 to 3 pixels
- Recommended choke value for black substrates: up to 5 pixels
- Values greater than 5 pixels may cause visible strokes or artifacts
- Select the job in the queue.
- Click Color Adjust in the bottom right.
- In the Easy Color Adjustments dialog, select the correct layer from the layer drop-down list at the top right.
- In the Underbase section, locate the Choke setting.
- Select a choke value to shrink the white underbase.
Troubleshooting Excessive White Peeking
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- Avoid using choke values greater than 5 pixels.
- If higher choke values are required, inspect the printer for mechanical issues.
- Check printhead alignment and related mechanical calibration.
Using the Set White Choke Wizard
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- Open the Q menu.
- Select Set White Choke.
- Print choke variation charts.
- Review printed samples to determine the optimal choke value.
- Apply the selected choke value to the print mode for future jobs.
Setting a Default White Choke in a Print Mode
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- Open the Devices menu.
- Select Manage Print Modes.
- In the Print Mode Manager dialog, select the print mode to edit.
- Double-click the print mode or click the Edit icon.
- Select the layer to adjust.
- Click the Processing Options tab.
- Locate the Choke option labeled Prime stop white Prime peeking out.
- Select the desired choke value from the drop-down list.
- Save the print mode changes.
Applying Print Mode Changes
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What you need
- Choke is a print mode feature
- Changing choke in the queue is temporary
- Switching print modes will remove queue-level choke changes
- Reselect the modified print mode in the queue.
- Confirm that the new choke setting is applied.