Selective overcoat
Examples described herein include examples methods for generating varnish knockouts that include applying a fixer material to a surface of a print medium, selectively applying a print material over the fixer material to form an image, and applying an overcoat material to form a durable coating on areas over the image and a nondurable coating over other areas of the surface.
1. A system comprising:
a fixer applicator to apply a fixer material to a region of a print medium
a print engine to apply selectively a printing material to sub regions of the region over the fixer material;
an overcoat applicator to apply an overcoat material over the fixer material and the print material in the region; and
a dryer to condition the overcoat material in direct contact with the fixer material into a nondurable layer.
2. The system of claim 1 , wherein the fixer material prevents the print material from penetrating the print medium, and prevents the overcoat material not in the sub regions from forming a durable coating.
3. The system of claim 2 , further comprising a cleaning element to remove the overcoat material from the areas of the regions not in the sub region.
4. The system of claim 2 , wherein the nondurable layer comprises a powder.
5. The system of claim 1 , further comprising a cleaning element to remove the overcoat material from the areas of the regions not in the sub region.
6. The system of claim 5 , wherein the fixer material prevents the print material from penetrating the print medium, and prevents the overcoat material not in the sub regions from forming a durable coating.
7. The system of claim 6 , wherein the nondurable layer comprises a powder.
8. The system of claim 1 , further comprising a media handler.
9. The system of claim 1 , wherein the fixer applicator extends across a full width of a media transport path in a direction perpendicular to the media transport path.
10. The system of claim 1 , wherein the overcoat applicator extends across a full width of a media transport path in a direction perpendicular to the media transport path.
11. The system of claim 5 , wherein the cleaning element extends across a full width of a media transport path in a direction perpendicular to the media transport path.
12. A method comprising:
with a fixer applicator, applying a fixer material to a region of a print medium with a print engine, printing material to sub regions of the region over the fixer material; and
with an overcoat applicator, applying an overcoat material over the fixer material and the print material in the region; and
with a dryer, conditioning the overcoat material in direct contact with the fixer material into a nondurable layer.
13. The method of claim 12 , wherein the fixer material prevents the print material from penetrating the print medium, and prevents the overcoat material not in the sub regions from forming a durable coating.
14. The method of claim 13 , further comprising, with a cleaning element, removing the overcoat material from the areas of the regions not in the sub region.
15. The method of claim 12 , wherein the nondurable layer comprises a powder.
16. The method of claim 12 , further comprising, with a cleaning element, removing the overcoat material from the areas of the regions not in the sub region.
17. The method of claim 16 , wherein the nondurable layer comprises a powder.
18. A printing system comprising:
a controller;
a non-transitory computer readable medium comprising executable code that when executed by the controller cause the controller to control:
a fixer applicator to apply a fixer material to a print medium
a print engine to apply selectively a printing material to regions of the print medium over the fixer material;
an overcoat applicator to apply an overcoat material over the fixer material and the print material; and
a dryer to condition the overcoat material in direct contact with the fixer material into a nondurable layer.
19. The printing system of claim 18 , wherein the fixer material prevents the printing material from penetrating the print medium, and prevents the overcoat material not in contact with the printing material from forming a durable coating.
20. The printing system of claim 18 , further comprising a cleaning element to remove the overcoat material where not formed into the durable coating.