INTD 53

coloring agents

all designers must use materials in the creation of their works:

•achromatic—neutral,such as black, whiteor grays

•chromatic—hued, such as red, yellow, or brown

additive color mixing

mixing of lightcolored filters in front of projected light ray—red, blue or green

video camera records images transmitted as light patterns

chromaticity: measure of the combination of hue and saturationluminance: measure of value (lightness or darkness)

additive color mixing

picture tube:coated with dots of phosphors in red, green, and blueactivated by transmitted signalsresulting in color image

computer monitors:much the same waybased on munsell systemscreen image additive (brighter)/printer image subtractive (duller)

subtractive color mixing

based on pigments or dyes•pigments: powders in a binder such as acrylic or oil which covers or adheres to a surface•dyes: pigments that are dissolved and absorbed in a fluid

subtractive color mixing

dyeing

mordants help fiber accept and fix dye— alum, iron, tannic acid, tin, copper

procedures vary

natural: from animal & vegetable sources, metals, minerals & clay

synthetic: first aniline (alcohol & coal tar)then azo (petroleum-based), more colorfast and brilliant

subtractive color mixing

pigment best function:•should not react (fade/turn pale) when mixed with light or liquids•should have permanence—remain stable in any atmosphere•should cover well and retain brilliance

subtractive color mixing

binders & grounds:

artist must be concerned with behavior of pigment

•tinting strength—refers to the intensity with which pigment reacts when mixed with white & binder

most surfaces/grounds begin with white

binders classified as dry or liquid—oils, waxes, gums, water or acrylics

subtractive color mixing

color printing:•four-color process printing•screens of dots layered on top of each other

subtractive color mixing

color printing:•PMS system (pantone matching system)•based on nine colors, plus black and transparent white•“recipes” create different colors

subtractive color mixing

photography:works in black-and-white or color

participation activity: off-white samples

…using the cardstock handout and the variety of hues available, create a variety of “whites"

white white white white white

one drop one drop one drop one drop one drop

variation variation variation variation variation