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Adobe InDesign mixed RGB/CMYK work flow

 

Who should use this work flow?

Scanners and digital cameras typically deliver color to the computer in RGB (red, green, blue) format. By leaving the color in the images in original RGB format, the images can then be converted on-the-fly by the application software at the time printing is done.

Images previously saved in CMYK format can also be processed in a mixed color work flow because color management also supports CMYK-to-CMYK conversions at print time.

Another advantage of working in mixed color mode is that the images, unharmed by color conversion, can be modified for reproduction on a variety of printing technologies and media at print time. Printing on newsprint, then on gloss offset, then converting images for presentation on the Internet is typical of the way images are managed in production in the modern graphic arts world. Saving original RGB files is the best way to maintain as many options as possible for output.

Adobe InDesign has a sophisticated set of controls for the assignment of color profiles and rendering intents for a color-managed work flow.

See also Adobe InDesign CMYK work flow.

The procedure is as follows:

 

Save photos in Photoshop

Take an image in RGB color from a scanner, digital camera, or other source.

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Or take an image in CMYK color from a scanner or other source.

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Place photos in InDesign

Place images in Adobe® InDesign®.

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Make Application Color Management settings

Set profiles for Monitor, Composite (HP printer) and Separations printers in Application Color Management dialog box.

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Make Document Color settings

In Document Color Settings, Enable Color Management; set Source profiles.

Set Rendering Intents: for solid color: Relative Colorimetric, or for images: Perceptual.

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Set printing parameters for the HP Designjet 10ps or 20ps and print

In the Print tab of the Default Settings dialog:

  • Deselect Perform color correction.
  • Set the appropriate Media type.

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Print

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Set printing parameters for the HP Designjet 50ps and print

In the Print settings tab of the Settings dialog:

  • Set the appropriate Paper type.

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Print

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