Pearlescent inks, writing instruments, and methods
AssigneeBerol Corporation
InventorsJean L. Spencer, Pawel Czubarow, Yoojeong Kim
Life of this patent
Estimating the term…
Abstract
Pearlescent inks are provided. The inks are suitable for use in writing instruments, and include a dispersion of a pearlescent pigment in a solvent. Some inks are erasable and/or shear-thinning.
Claims39
A pearlescent ink for use in a writing instrument, comprising:
- lubricious particles,
- a shear-thinning additive, and
- pearlescent pigment particles dispersed in a solvent.
An erasable pearlescent ink, comprising lubricious particles and a dispersion of a pearlescent pigment in a solvent, the ink exhibiting an erasability of at least 80%.
A shear-thinning pearlescent ink, comprising:
- lubricious particles;
- a pearlescent pigment;
- a solvent;
- and,
- a shear-thinning additive, wherein said pigment is dispersed in said solvent has a shear-thinning index of between about 0.01 and about 0.8.
A method of forming a marking on a substrate, comprising:
- making a marking on the substrate with a writing instrument containing a pearlescent ink comprising lubricious particles, a shear-thinning additive, and pearlescent pigment particles dispersed in a solvent.
A method of forming a marking on a substrate, comprising:
- making a marking on the substrate with a writing instrument containing a pearlescent ink comprising lubricious particles and a dispersion of a pearlescent pigment in a solvent, the ink exhibiting an erasability of at least about 80%.
A method of forming a marking on a substrate, comprising:
- making a marking on the substrate with a writing instrument containing a pearlescent ink comprising lubricious particles, a solvent, a shear-thinning additive, and a pearlescent pigment, wherein said pigment has an average particle diameter between about 1 micron and about 25 microns and is dispersed in said solvent.
A method of forming a marking on a substrate, comprising:
- making a marking on the substrate with a writing instrument containing a pearlescent ink comprising lubricious particles, a pearlescent pigment, a solvent, and a shear-thinning additive, wherein said pigment is dispersed in said solvent and the ink has a shear-thinning index of between about 0.01 and about 0.8.
A writing instrument, comprising:
- a reservoir containing a pearlescent ink comprising lubricious particles, a shear-thinning additive, and pearlescent pigment particles dispersed in a solvent.
A writing instrument, comprising:
- a reservoir containing a pearlescent ink comprising lubricious particles and a dispersion of a pearlescent pigment in a solvent, the ink exhibiting an erasability of at least about 80%.
A writing instrument, comprising:
- a reservoir containing a pearlescent ink comprising lubricious particles, a solvent, a shear-thinning additive, and a pearlescent pigment wherein said pigment has an average particle diameter between about 1 micron and about 25 microns and is dispersed in said solvent.
A writing instrument, comprising:
- a reservoir containing a pearlescent ink comprising lubricious particles, a pearlescent pigment, a solvent, and a shear-thinning additive, wherein said pigment is dispersed in said solvent, and the ink has a shear-thinning index of between about 0.01 and about 0.8.
Dependencies are inferred from the claim text.