Apparatus and method for preventing splatter for continuous printing
View Patent ↗An apparatus and method for liquid-phase dispensing of layers onto a substrate of an electronic device. An absorbent material reduces or eliminates splatter of printing material on the substrate during continuous printing operations. The absorbent material can be regenerated by exposure of new surface area or vacuum drawing of printing material through the absorbent material.
1. An apparatus comprising:
a series of nozzles configured to dispense a continuous stream of printing material onto a substrate;
an absorbing material for reducing splatter of the printing material, the absorbent material is adjacent the substrate; and
a device to regenerate absorbing capacity of the absorbing material, wherein the device is a rotational device to move the absorbing material and the device comprises a vacuum source to draw the printing material through the absorbing material.
2. The apparatus of claim 1 wherein the series of nozzles comprises at least 3 nozzles.
3. The apparatus of claim 1 wherein the series of nozzles comprises at least 6 nozzles.
4. The apparatus of claim 1 wherein the series of nozzles comprises at least 9 nozzles.
5. The apparatus of claim 1 wherein the series of nozzles comprises at least 12 nozzles.
6. The apparatus of claim 1 wherein the absorbing material contains a smooth surface.
7. The apparatus of claim 1 wherein the absorbing material contains an irregular surface.
8. The apparatus of claim 7 wherein the absorbing material is selected from the group consisting of sponges, natural fibers and synthetic fibers.
9. A liquid-phase coating process comprising:
providing a series of nozzles;
providing an absorbing material;
providing a device to regenerate absorbing capacity of the absorbing material;
dispensing a continuous stream of printing material onto a substrate, the absorbent material is adjacent the substrate; and
directing excess printing material onto the absorbing material for reducing splatter of the printing material, wherein the device is a rotational device to move the absorbing material and the device comprises a vacuum source to draw the printing material through the absorbing material.
10. The process of claim 9 wherein dispensing the continuous stream occurs in a first direction, then directing excess printing material onto the absorbing material, followed by printing in a second direction.
11. The process of claim 10 wherein the first direction is opposite the second direction.
12. The process of claim 9 wherein the series of nozzles comprises at least 3 nozzles.
13. The process of claim 9 wherein the series of nozzles comprises at least 6 nozzles.
14. The process of claim 9 wherein the series of nozzles comprises at least 9 nozzles.
15. The process of claim 9 wherein the series of nozzles comprises at least 12 nozzles.
16. The process of claim 9 wherein the absorbing material is selected from the group consisting of sponges, natural fibers and synthetic fibers.