Fabrication of printhead nozzle plate coating with self cleaning and high drool pressure by electrospinning technique

A method for making an ink jet printhead nozzle plate comprising:

• providing a plate substrate;
• and
• coaxially electrospinning a core polymer and a shell polymer to form a coaxially electrospun layer on the plate substrate, wherein the coaxially electrospun layer provides a low adhesion, oleophobic textile surface exhibiting a low sliding angle with at least one of the jetted drops of ultra-violet gel ink and jetted drops of solid ink, and wherein the low sliding angle is from less than about 1° to less than about 30°, and wherein the shell polymer comprises a material including at least one selected from the group consisting of:
• a) a polymer or an oligomer containing an isocyanate functional group, wherein the isocyanate functional group is selected from the group consisting of diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, a polymer or oligomer containing isocyanate (—NCO) functional groups, and a mixture thereof;
• b) a polymer or oligomer comprising an isocyanate functional group;
• a polymer or oligomer comprising a hydroxyl functional group;
• and
• a hydroxyl functionalized polymer or oligomer comprising at least one polysiloxine unit;
• c) a polymer or oligomer comprising an isocyanate functional group;
• a polymer or oligomer comprising a hydroxyl functional group;
• and
• a hydroxyl functionalized fluoro-crosslinking material;
• d) a polymer or oligomer comprising an isocyanate functional group;
• a polymer or oligomer comprising a hydroxyl functional group;
• a hydroxyl functionalized polymer or oligomer comprising at least one polysiloxane unit;
• and
• a hydroxyl functionalized fluoro-crosslinking material;
• and
• e) an isocyanate;
• a polylol;
• a hydroxyl functionalized polysiloxane;
• and
• a hydroxyl functionalized fluoro-crosslinking material.