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The Pantone Matching System

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THE PANTONE® MATCHING SYSTEM

The PANTONE Matching System is the best known colour mixing system in the world today. It was designed to provide colour standardisation for the entire printing industry. It also provided an array of colours to graphic designers. The printer was able to reproduce these colours by mixing together two or more standard basic colours. When the PANTONE Colour Formula Guide first came out, there were 10 standard basic colours. With these 10 basic colours, you could mix any one of 487 different colours, not including metallic golds and silver or the 42 fluorescent colours. Each formula was printed in “parts” only. All formulas were 3 digit numbers. By following the formula provided, you could mix any colour very accurately. In the mid-1970s, Pantone added the “gram” or percentage formulas to the guide as well as the “parts” In the mid-1980s; Pantone introduced an up-dated PANTONE Colour Formula Guide 747XR. The number of colours available increased from 487 to 747. In that book,4 digit numbers were added, an additional basic colour was added, PANTONE Violet, and 4 basic “0” series colours; PANTONE Yellow 012, PANTONE  Orange 021,PANTONE  Red 032, PANTONE  Blue 072 were added. The number of fluorescent colours dropped to 7 instead of the original 42.In 199l Pantone introduced still another up-dated PANTONE Colour Formula Guide, the PANTONE Colour Formula Guide 1000.This new book contained over 1000 colours, including all the old numbered colours from the 747XR series book. The fluorescent colours were increased from 7 to 14.

The most recent books are the Pantone Plus Series which contain 1341 colours.

Do not use old PANTONE Colour Formula Guides to judge colour reproduction. Purchase a new one at least once a year so that you can be sure that the colour in your present book is accurate and has not faded from exposure to light.

WEIGHING AND MIXING INK

As the demand for colour printing increases, the demand for short run black and white printing shrinks. Many of the smaller print shops have had to look into new printing markets. Most are looking toward the short run colour and coated stock markets. These markets create a new challenge for the small printer; keeping costs down, yet providing the customer with a wide range of colours. Many of these printers have turned to the PANTONE Matching System® to give the customer the largest selection of colours available. The PANTONE Matching System requires the printer to have certain material for the system, such as ink, ink scales, ink knives, empty cans, and a formula guide. All of these things can be purchased separately. There are several methods of mixing ink by hand. Alternatively they can be ready mixed by your ink supplier.

 WHEN COLOUR FAILS TO MATCH

A colour selected from a colour card or the PANTONE® Formula Guide may not print exactly the way you expect. There are many factors involved that determine the shade of the printed colour. In most situations the colour will print the way you want it to. When it doesn’t, there are a few tests you can use to determine where the problem lies.

 Colour of stock

The colour of the stock will affect all inks to some degree. Transparent inks are greatly affected by allowing the stock colour to show through the ink film. Colour inks that are to be printed on colour stocks should be colour-matched on the actual stock being used. Proofing the job on the actual stock to be used is recommended before going to press.

 Paper absorbency

Paper absorbency is another big factor in printing with transparent inks. Ink is formulated to print a given colour by using a normal ink layer on the printed surface. If the paper is very absorbent, it will require more ink to cover the surface, especially if the surface is not smooth. When a heavier ink film is printed, the transparent ink colour will be deeper and more intense. Again, proofing the job on the actual stock to be used is recommended before going to press.

 Light source

Colour inks, when printed, can be affected by the light source used to view the printed sheet. Be sure to compare the printed colour and the original colour swatch under the same light source.

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  • Clive Harper