1. Color

2. White Light White light is a mixture of all colors of visible light.
Black is the absence of light.
This font is black because no light is shining here.
The light shines all around it making white.

3. Mixing colors By mixing different colors you can create new colors.
The goal for a printer make as many colors possible out a few starting colors.
Out of 3 colors we can make all colors.

4. Color by subtraction
Pigments (dye, ink) absorb certain frequencies of light and reflect others.
Yellow pigment reflects yellow light and absorbs other colors.
When you add another pigment it subtracts a color by absorbing it.
If you mix all colors perfectly you should get black.

5. Subtractive primary colors
You can make almost any color out of different concentrations of Yellow, Cyan, and Magenta pigment.
Art has long used Yellow, blue, and red.
Both of these sets are shades of the other.
You can make yellow, cyan and magenta from yellow, blue and red.
You would just use more of one color and less of another.

6. Where you will see the subtractive primary colors
Every color printer has 3 cartridges (some also have a 4th black cartridge)
Those colors are cyan, magenta and yellow.
The 4th cartridge isn’t really necessary, however it was quickly found that 99% of printing is in black, and replacing one cartridge is cheaper than replacing 3.

7. Mixing the subtractive primary colors in equal concentrations
Yellow
Red
Green
Black
Magenta
Cyan
Blue
*It will make this section easier if you cut light
down to these six colors

8. Mixing subtractive Primary colors

9. More mixing Yellow Red Green Black Magenta Cyan Blue Red reflects
yellow and
magenta
light and absorbs
cyan
Yellow
Red
Green
Black
Magenta
Cyan
Blue
If you mix cyan and
red all colors will be absorbed
so you will get black.
Cyan reflects cyan
and absorbs magenta
and yellow

10. Filters A filter is something like colored glass or plastic.
Color filters allow certain colors to pass through and absorb others.
They work the same way pigments do, except pigments reflect color, where filters transmit color.

11. The hidden message trick
These are made of several dots and lines
The ones that
reflect red
When you put a red filter on top of it, all that reflect red will appear red, cyan will appear black, because it absorbs the red light.
And cyan
which absorbs red