Full color images viewed on a monitor are created by combining the colors Red, Green and Blue resulting in a continuous tone pixel structure.
Printing plates use a high contrast process that sees images as either black or white.
Varying the size of printing dots will create various shades of gray.
4-color process printing is commonly called CMYK. Images are created by combining the colors Cyan, Magenta, Yellow and Black.
Combination of CMYK dots and varying their sizes will create a secondary color.
There is a printing plate for each of the four colors.
You can print about 6,000 colors.
Your computer monitor can be calibrated to match proofing systems.
Proofing systems can be calibrated to match printing presses.
Widespread understanding four-color process theory of color
We see millions of color shades
Photographs record 12,000 to 14,000 colors
Proofing systems show 7,000 colors.
Printing on coated paper will reproduce only 6,000 colors
Commonly known as PMS colors.
Made as a special color not dependent on CMYK.
A PMS number is an individual color identifiable anywhere in the world.
A PMS color requires a separate printing plate which uses one printing unit.
A one-color project printing a PMS color is less expensive than printing CMYK
Each color requires a separate printing unit.
For example if your logo uses a PMS color and you are printing CMYK you could increase cost by having to print a 5th color.
To communicate color effectively you should have at your desk the following:
Three-Guide Set printed on coated, uncoated, and matte papers.
Color bridge that compares PMS colors to the CMYK equivalent.
8% of male population has some color perception deficiency.
As we age our ability to see blues and violets is hampered.
The light in the viewing area will change the color that we see.
Paper surface and color affects the appearance of ink color.
Actual ink on running stock
All offset inks are transparent
The color of the paper will change the viewed color of ink
Example blue ink on yellow paper will appear to be green
Varnish effects can be demonstrated on an ink drawn down
RGB vs. CMYK
Communicating with Color
Paper and Ink
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