Inkjet printing on semi-porous or non-absorbent surfaces
Printing methods are provided. In one method, printing an inkjet image using a liquid hydrophilic inkjet ink onto a surface of a semi-absorbent recording medium generating a toner image having toner particles arranged conforming to the inkjet image and transferring the toner image onto the recording medium where an unabsorbed volume of the inkjet ink is present on the recording medium. The toner particles manage unabsorbed volumes of the inkjet ink to protect the recording medium from image artifacts that can be created by an unabsorbed volume of the inkjet ink on the surface without a liquid management toner image.
1. A printing method comprising:
printing an inkjet image using a liquid hydrophilic inkjet ink onto a surface of a semi-absorbent recording medium; and
generating a liquid management toner image having toner particles arranged conforming to the inkjet image and transferring the liquid management toner image onto the recording medium where an unabsorbed volume of the inkjet ink is present on the recording medium;
wherein the toner particles manage unabsorbed volumes of the inkjet ink to protect the recording medium from image artifacts that can be created by an unabsorbed volume of the inkjet ink on the surface without a liquid management toner image.
2. The method of claim 1 , wherein the liquid management toner image provides toner particles on a receiver after at least a portion of a liquid in the inkjet ink has been absorbed by the receiver.
3. The method of claim 1 , wherein the surface is an intermediate transfer surface and the inkjet image and the liquid management toner image are transferred from the surface onto a recording medium.
4. The method of claim 1 , wherein the semi-absorbent recording medium is a non-absorbent recording medium.
5. The method of claim 1 , wherein the surface is the recording medium.
6. The method of claim 1 , wherein the toner particles are at least in part open cell porous type of porous toner that allows the hydrophilic ink to flow through the toner particles.
7. The method of claim 6 , wherein the open cell porous toner contains hydrophilic addenda within the cells.
8. The method of claim 1 , wherein the toner particles have at least one of a binder material that is hydrophilic, an addendum that is hydrophilic, or a coating that is hydrophilic.
9. The method of claim 1 , wherein the an optical transmission density of a monolayer of the clear toner for white light is less 0.05 after the clear toner is fused.
10. The method of claim 1 , wherein the liquid management toner image is oversized with respect to portions of the inkjet image to which the liquid management toner image corresponds.
11. The method of claim 1 , wherein the liquid management toner image is determined to provide toner at any portion of the inkjet image at which a volume of ink is printed that is above a threshold.
12. The method of claim 1 , wherein an amount of toner particles in the liquid management toner image increases monotonically with the volume of inkjet ink printed on the surface.
13. The method of claim 1 , wherein the liquid management toner image at least in part provides coverage of any portion of the inkjet image that is above a threshold image density.
14. The method of claim 1 , wherein an amount of toner particles in the liquid management toner image increases monotonically with image density.
15. The method of claim 1 , wherein the liquid management toner image is removed after a solvent has been absorbed by the liquid management toner image.
16. The method of claim 1 , wherein the liquid management toner image is fused to the recording medium and a heat of fusing at least in part dries the liquid ink.
17. The method of claim 1 , wherein the toner particles of the liquid management toner image are at least in part fused together and to the recording medium by application of microwave energy that heats liquid components of the hydrophilic ink heating the liquid components, which in turn heat the toner causing the fusing.
18. The method of claim 16 , further comprising the step of heating the liquid management toner image and the ink prior to the fusing.
19. The method of claim 16 , wherein the toner image is patterned to include pathways for any liquid vaporized during fusing to escape from within the liquid management toner image without disrupting the liquid management toner image.
20. The method of claim 1 , wherein the toner particles absorb at least a part of the unabsorbed volume of the ink.
21. The method of claim 17 , wherein the microwave fusing generates a cohesive toner structure that allows a passage of hydrophilic solvent vapors.
22. The method of claim 21 wherein the microwave fusing is followed by fusing by subjecting the printed image to a combination of heat and pressure.