Back to results
US 9,175,182 B2Granted
Ink
AssigneeDip-Tech Ltd.
InventorAndy Shipway
Life of this patent
Estimating the term…
Abstract
Silver carbonate decomposes to form silver metal by a temperature of 280 degrees Celsius. Its use in inkjet ink allows the low-cost production of conductive metallic inks. The silver metal layer could be further processed to enhance silver decorative properties and in particular light reflective properties.
Claims9
An ink composition comprising prior to firing at least 20% by weight of silver carbonate and at least 14% by weight of metal silver after the firing to a temperature of at least 280° C., based on the total weight of the ink composition.
An ink composition comprising:
- 20% to 80% by weight of silver carbonate particles, the silver carbonate being in an equilibrium with silver oxide and carbon dioxide;
- 0.5% to 10% by weight of dispersant;
- 20% to 70% by weight of vehicle;
- 0.5% to 5% by weight of binder;
- and
- 0.05% to 2.0% by weight of other additives, wherein the ink composition is formulation so that when fired to a temperature of 300° C. to convert the silver carbonate to silver metal and adhere the silver metal to a surface organic materials present in the composition are partially or fully decomposed and removed from the silver metal, and the % by weight being based on the total weight of the ink composition.
3 more elements
Dependencies are inferred from the claim text.