Post on 21-Feb-2016
description
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, copperprocedures varynatural: from animal & vegetable sources, metals, minerals & claysynthetic: 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 whitebinders 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