Custom color toner
View Patent ↗The present invention provides a custom color toner having a first particle size. Colored particles are attached to the surface of the base toner in an amount sufficient to provide a predetermined color to the base toner. The colored particles have a second particle size less than the first particle size.
1. A custom color toner comprising:
a base toner having a surface and having a first particle size wherein said base toner comprises a colorant and has a first color; and
colored particles attached to the surface of said base toner in an amount sufficient to shift the first color by hue angle of at least 2 degrees said particles having a second particle size less than the first particle size.
2. The custom color toner of claim 1 wherein the first particle size is 2 microns or greater.
3. The custom color toner of claim 1 further comprising at least one spacing agent.
4. The custom color toner of claim 3 , wherein said spacing agent comprises silica.
5. The custom color toner of claim 4 , wherein the base toner comprises a polymeric binder.
6. The custom color toner of claim 1 , wherein the base toner comprises a charge agent.
7. The custom color toner of claim 1 , wherein the base toner comprises a wax.
8. The custom color toner of claim 1 , wherein said base toner comprises cross-linked styrene acrylate or cross-linked polyester or derivatives thereof.
9. The custom color toner of claim 1 wherein said base toner is selected from the group consisting of vinyl polymers, styrene polymers, alkyl acrylates, alkyl methacrylates and styrene-acrylic copolymers.
10. The custom color toner of claim 1 wherein the colored particles particle size is less than 2 microns.
11. The custom color toner of claim 1 wherein the colored particles comprise at least 5 percent by weight of a polymeric binder.
12. The custom color toner of claim 11 wherein the polymeric binder is selected from the group consisting of vinyl polymers, styrene polymers, alkyl acrylates, alkyl methacrylates and styrene-acrylic copolymers.
13. The custom color toner of claim 1 wherein the base toner comprises a polymeric binder.
14. The custom color toner of claim 13 wherein the polymeric binder of the base toner is selected from the group consisting of vinyl polymers, styrene polymers, alkyl acrylates, alkyl methacrylates and styrene-acrylic copolymers.
15. The custom color toner of claim 1 wherein the colored particles comprise less than 20 percent by weight of the core toner.
16. The custom color toner of claim 1 , wherein the
base toner has particle size of 6 microns or greater; and
the colored particles attached to the surface of said base toner have a particle size of less than 4 microns.
17. A developer comprising:
a custom color toner according to claim 1 ; and
magnetic carrier particles.