In color printing, and in the fine arts, cholesteric liquid crystal (CLC) color
inks are known to possess much higher color saturation and brightness than conventional
pigment and dyed based inks. However, prior art CLC ink formulations are inconvenient
because in the liquid phase they have to be confined in cells, and in the solid
phase, they have to be applied at high temperature, and have to be aligned by some
means to produce the optimum color. This invention solves the problem encountered
in the CLC prior art, by making pre-aligned CLC platelets or flakes of appropriate
thickness and size and mixing them in appropriate host fluids producing a novel
CLC ink which can be applied at room temperature and without the need for alignment.
The new pre-aligned room temperature CLC ink can be used as a substitute for conventional
inks in almost all printing and plotting, and manual drawing and painting. Using
the notch filter CLC platelets, the brightness is further enhanced. This invention
teaches the CLC ink concepts, its applications and method of manufacturing.