2013年2月27日星期三

What is Digital printing different from litho printing

A full complement of rollers, rubber blankets, etc. is necessary for each ink color. Typical offset presses are 1-color, 2-color, 4-color, or 6-color. 1-color presses are most commonly used to print black only, although they are not limited to black. 2-color presses often handle black and one additional spot color - perfect for printing simple brochures and newsletters. 4-color presses are usually set up for CMYK. 6-color presses are usually set up to handle CMYK inks and two additional spot inks. If you need 5 inks, and you only have a 4 color press, it's necessary to break down and set up again so that you can re-feed the paper into the press for the last color.

Digital printing is the reproduction of digital images on physical surface, such as common or photographic paper, film, cloth, plastic, etc.

It can be differentiated from litho printing in many ways, some of which are;

  • Every impression made onto the paper can be different, as opposed to making several hundred or thousand impressions of the same thing from one set of plates, as in traditional methods.
  • The Ink or Toner does not absorb into the paper, as does conventional Ink, but forms a layer on the surface.
  • It generally requires less waste in terms of chemicals used and paper wasted in set up.
  • It is excellent for rapid prototyping, or small print runs which means that it is more accessible to a wider range of designers.
What about Image Printing links

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