Method and system for ink jet printing images to complex contoured surfaces of ceramic and glass items such as dishware
View Patent ↗A glass or ceramic dishware item with an image disposed thereon is provided. The image is transferred, at ambient temperature, to the surface of the dishware from an ink composite by using a silicone transfer substrate. The ink composite is dispensed by an inkjet head. Methods and systems for producing ink composites and dishware using ink composites are also provided.
1. A layered ink composite for use in applying a digital inkjet printing to a contoured ceramic, glass-ceramic or glass substrate, the layered ink composite comprising:
a first organic layer comprising an organic medium and frit, the first organic layer having a viscosity suitable for dispensing from an inkjet head;
an image layer comprising an inkjet ink, the image layer having a viscosity suitable for dispensing from an ink jet head; and
a second organic layer comprising an organic medium and frit, the second organic layer having a viscosity suitable for dispensing from an inkjet head, wherein the first organic layer comprises a first constituent layer of organic medium and a second constituent layer of frit and the second organic layer comprises a first constituent layer of organic medium and a second constituent layer of frit.
2. The layered ink composite of claim 1 , wherein the viscosity of each of the first organic layer, image layer and second organic layer is less than or equal to about 20 centipoise.
3. A glass, glass-ceramic or ceramic dishware item having a contoured surface with an image disposed thereon, the image transferred from a layered ink composite, wherein the layered ink composite is created by:
depositing a first organic layer comprising an organic medium and frit, the first organic layer having a viscosity suitable for dispensing from an inkjet head;
depositing inkjet ink onto the first organic layer, the deposited inkjet ink configured as a digitally generated image and having a viscosity suitable for dispensing from an ink jet head; and
depositing a second organic layer comprising an organic medium and frit onto the deposited inkjet ink, the second organic layer having a viscosity suitable for dispensing from an inkjet head, wherein the image is transferred at or near room temperature from the layered ink composite to a contoured surface of a workpiece by moving one of either the second organic layer and the contoured surface of the workpiece into contact with the other of the second organic layer and the contoured surface of the workpiece; and
wherein the frit of the first organic layer is deposited onto the organic medium before the inkjet ink is deposited; and the frit of the second organic layer is deposited onto the deposited inkjet ink before the organic medium is deposited onto the frit.
4. The glass, glass-ceramic or ceramic dishware item of claim 3 , further comprising the step of firing the dishware item at a temperature of 300° to 790° C.