nT Trapping works with multichannel PSD files. Each separation must come in a separate alpha channel, in order to make a trapping using a selection of the design.
Start with a multichannel image in Adobe® Photoshop® in any mode, with various channels for each separation. Finally, display the drop-down options list from File | Automate and click on nT TrappingPro 8.X.X or else with nT neoTextil Panel shortcuts.
Step-by-Step
1. Set the trapping by selecting the appropriate channel, and setting the parameters in the Trapping dialog window. The Preview will be updated automatically.
2. Open the trapping dialog and select the base colors for every separation, by clicking on the color sample.
3. In this example we want to trap channel 6 (S-6) with channel 9 (S-9) using 5 pixels. This is the original image without any trapping.
- The same image uses 5 pixels and 100% Hardness.
- The same image uses 5 pixels and 60% Hardness.
- The same image uses 5 pixels and a Round shape.
- The same image uses 5 pixels and a Square shape.
- The same image uses 5 pixels and Maximum Intensity.
- The same image uses 5 pixels and Medium Intensity.
Below is shown the same image using 5 pixels, 100 % Hardness, Round shape, and Maximum Intensity, trapping Channel 9 on all channels.