Titanium-containing interference pigments and foils with color shifting properties

A color shifting pigment flake, comprising:

• a first titanium-containing absorber layer;
• a first dielectric layer on the first absorber layer;
• a reflector layer on the first dielectric layer;
• a second dielectric layer on the reflector layer;
• and
• a second titanium-containing absorber layer on the second dielectric layer;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting pigment flake, comprising:

• a core reflector layer;
• a dielectric layer substantially surrounding the core reflector layer;
• and
• a titanium-containing absorber layer substantially surrounding the dielectric layer, the absorber layer comprising an absorbing material substantially free of titanium dioxide;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting pigment flake, comprising:

• a core reflector layer having a top surface, a bottom surface, and at least one side surface;
• a dielectric layer on the top surface and the bottom surface but not on at least one side surface of the reflector layer;
• and
• a titanium-containing absorber layer substantially surrounding the dielectric layer and in contact with at least one side surface of the reflector layer;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting pigment flake, comprising:

• a core layer;
• a reflector coating substantially surrounding the core layer;
• a dielectric layer substantially surrounding the reflector coating;
• and
• a titanium-containing absorber layer substantially surrounding the dielectric layer;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting pigment flake, comprising:

• a core layer;
• a first titanium-containing absorber layer substantially surrounding the core layer;
• a dielectric layer substantially surrounding the first titanium-containing absorber layer;
• and
• a second titanium-containing absorber layer substantially surrounding the dielectric layer;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting pigment flake, comprising:

• a first titanium-containing absorber layer;
• a dielectric layer on the first absorber layer;
• and
• a second titanium-containing absorber layer on the dielectric layer;
• wherein the pigment flake exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting foil, comprising:

• a reflector layer;
• a dielectric layer on the reflector layer;
• and
• a titanium-containing absorber layer on the dielectric layer;
• wherein the foil exhibits a discrete color shift such that the foil has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A color shifting foil device, comprising:

• a carrier substrate;
• a first titanium-containing absorber layer on the carrier substrate;
• a dielectric layer on the first titanium-containing absorber layer;
• and
• a second titanium-containing absorber layer on the dielectric layer;
• wherein the foil exhibits a discrete color shift such that the foil has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.

A method of fabricating a color shifting pigment flake composition, comprising:

• providing one or more reflector layers;
• forming one or more dielectric layers on the reflector layers;
• and
• forming one or more titanium-containing absorber layers on the dielectric layers, the absorber layers comprising an absorbing material substantially free of titanium dioxide, thereby producing a pigment flake composition exhibiting a discrete color shift such that the composition has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.