Wednesday, 14 November 2012

What is design for print: Multi-tone

Duotone

Duotone is the generic name for multitone printing, which can be done with two, three or four inks. This process requires that the press be set up with special inks, usually PANTONE-designated colors, instead of the standard CMYK inks used for process color printing. Usually the images are printed with a dark base color and a lighter second color, overprinted to fill in, tint and tone the photo or graphic.
Duotone color mode in Photoshop supports between one to four colors of ink. Because home inkjet printers are far better at printing full-color images than black and white, many photographers and designers use Photoshop Duotone processing to improve their artwork/prints. Photoshop's Duotone mode is also commonly used for creating sepia toned prints, using black and yellow inks, sometimes with a third colour.

Making a duotone image in Photoshop

You can use any CMYK or RGB image and turn it into a duotone. First step is to make it a grayscale image. Go to Image > Mode > Grayscale. Then access the same menu and click duotone.
In the duotone menu you can pick upto 4 colors or Pantone's and load or safe any color combinations you make.

The curves for your selected duotone offer a lot of influence of the usage of inks in different depths of tone in the image.

Other multi-tone images

There are 4 types of multitone images in all. Each one contains the number of inks as the name implies:
  • Monotone grayscale images printed with a single ink
  • Duotone grayscale images printed with two inks
  • Tritone grayscale images printed with three inks
  • Quadtone grayscale images printed with four ink


Source:http://www.printernational.org/what-is-duotone.php

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