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Lecture

GRA 533 Week 12 Spot Colours

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Department
Graphic Communications
Course
GRA 533
Professor
Abhay Sharma
Semester
Fall

Description
 November 18, 2013 GRA 533 Week 12­ Spot Colours Slide 1 • Colour Bridge: Spot and CMYK colours beside each other Slide 4­Demands of package printing Packaging has spot colours to have bright and bold colours ▯ why? To capture the eye of  consumer as they walk by ­image changes as you walk by ­LED lights ­colour is the best tool to capture ones eye ­colour needs to be clean, consistent with 3­4 samples, not faded, bright ­many flexo companies take the time to get bright colours  • Not all packaging contains spot colours • Need to attract customers with bright and bold colours • Clean, bright and attractive Slidth5­ what are spot colours A 5  plate can be a spot colour plate  ▯uses its own ink and own channel ­contains info for that spot colour  ▯contains gray scale info  ▯it’s actually black and white channel  ▯raised surfaces for flexo printing ­how much ink to pick up Slide 6 Lecture 8­RGB and CMY(K) colour modes Panton colours, RGB colours, CMYK colours  ▯only instructions for colour  ▯only colour when they’re seen on screen or printed on paper • Printed in CMYK • Only specifications until it’s printed Slide 7 Lecture 2­Printing processes ­main type of printers are on the top 2 right side  ▯work with special ink  ▯can’t just make spot colours  ▯one exception ▯ digital presses can support spot colours  ▯but don’t really spot colours  ▯they will simulate it in CMYK ­traditional printing processes ▯ can put another plate • Inkjet and xerography don’t have support for spot colour inks/toners o Can’t make spot colour inks/toners for these 2 devices o HP can support spot colours inks  It’s the only device that can do that at the moment Slide 8  Can be merged into CMYK ­these two printers can print it two ways  ▯with a spot colour  ▯easier to balance and look at the channels because it’s easier to balance density  ▯or merge it into CMYK (won’t look the best) ­some colours will be a good match and some won’t ( use the colour bridge/coated or  uncoated book to compare) ­digital devices usually have the option of merging colours only  ▯cheaper in general  ▯even if it’s within gamut it’s hard to balance sometimes, making sure the density doesn’t go to  high • Can print as a special spot colour OR merge into CMYK o Not all colours will be a good match in CMYK • Most digital presses and toners only have 4 colours Slide 9 • Cheaper to merge to CMYK however it’s easier to control one colour especially for brand colours Slide 10 – Pantone matching system ­pantone books  formula guides­_> goeguide/coated   ▯tell you how to make the pantone inks ­colour bridge/ coated, colour bridge/ uncoated  ▯shows you the solid inks and the CMYK (tints) equivalent  ▯every colour is done that way ­panton
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