With OPI, you can use the spot color channels created in TIFF images.

Note: If the images are not Photoshop TIFF files, Prinergy ignores clipping paths. To use the spot color channels, you can use alternative methods. In software other than InDesign, save the images as DCS files, and replace them in the original layout. With InDesign, which does not omit TIFF files for OPI-containing spot colors even when OPI is selected in the Print dialog box, do either of the following actions:

• Create a plain alternate CMYK image for use as a proxy. Print the PostScript including the OPI comments but omitting the images. Add the TIFF file containing the desired spot color channels to an image search path.
• Use proxy images created by an OPI solution, such as ColorCentral or Asset Library, for low-resolution image placement into InDesign. These images will be replaced by their high-resolution counterparts during the OPI step of the refine process.

1. Create the image as TIFF files in the Photoshop software.
2. In the Image Replacement area of the Fonts and Images section of the refine process template, select the Search for High-Resolution Images in Image Search Paths check box to enable OPI.
3. In the Image Attributes area, select the Apply Clipping Path in Photoshop TIFFs check box.
4. Refine the files.