Design Production // Design for print - Colour Model Research

CMYK

Read more: http://www.castleprint.co.uk/spot-process-colours.html#ixzz4O9AUBu

Source - Pantone
 

Lithographic printer using CMYK at Pressision Printing - taken on a research visit

Source - http://www.webriti.com/index.php/color/cmyk-and-rgb-colorspace/

'CMYK is a color model in which all colors are described as a mixture of these four process colors. CMYK is the standard color model used in offset printing for full-color documents. Because such printing uses inks of these four basic colors, it is often called four-color printing.'

CMYK is a subtractive colour mode, as it is an ink based colour creation it means the more colours are added the darker the print will become. As each colour used in four colour printing are printed individually as tiny dots and then layered with the intended mixture of the 3 remaining process colours the more colours layered results in a darker colour being printed.
 

RGB

RGB (red, green, and blue) refers to a system for representing the colors to be used on a computer display. Red, green, and blue can be combined in various proportions to create any color in the visible spectrum. Levels of R, G, and B can each range from 0 to 100 percent of full intensity.

RGB is an additive colour model which means because this colour model is made up from the mixture of different coloured light it means that the more colours are added the brighter colour it will become. Eventually resulting in white when 100% of RGB are put together.

Spot Colour and Pantone matching

Spot colours are the preferred method of producing stationery inexpensively, and also the method used where colour accuracy is deemed essential, for instance a company logo. The standard reference guide to spot colour work in the UK is Pantone®.

Read more: http://www.castleprint.co.uk/spot-process-colours.html#ixzz4O9AUBum

Read more: http://www.castleprint.co.uk/spot-process-colours.html#ixzz4O9AUBumc

Read more: http://www.castleprint.co.uk/spot-process-colours.html#ixzz4O9AUBumcv

Spot colours are the preferred method of producing stationery inexpensively, and also the method used where colour accuracy is deemed essential, for instance a company logo. The standard reference guide to spot colour work in the UK is Pantone®.

Read more: http://www.castleprint.co.uk/spot-process-colours.html#ixzz4O9AUBumc

Spot colour is mainly dominated by PMS (Pantone Matching System) it is an international form of colour modeling and allows designs to be sent around the world to various designwers and printers while still maintaining an accurate and consistent colour scheme both on screen and printed.

Spot colours are mixed specifically to fit the colour used on a design, there is a limitless colour library that can be used to choose from. 

Spot colours can be used with CMYK or can be used to replace one of the four colour process at the printng stage. This creates interesting and unique printed outcomes that can not be created on screen or with the limited gamut that CMYK produces. 

Hexachrome  

 

Hexachrome is basically a new colour model created by Pantone which adds the additional colours of Orange and Green to CMYK to create a larger colour gamut, it is not a very popular way of managing colour and many printers and designers would have difficulty maintaining the chosen colours as i think hexachrome is now discontinued.

Source - http://www.bluepoleprint.com/faq/hexachrome

The Hexachrome system uses six colours instead of the conventional four used in traditional colour print.
By supplementing the Cyan, Magenta, Yellow and Black with Orange and Green it is possible to produce a greater range of colours accurately. The results can be a much more vibrant and high impact print.