Electroconductive roller
AssigneeHewlett-Packard Development Company, L.P.
InventorsBin Huang, Guang Jin Li
Life of this patent
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Abstract
The present disclosure relates to an electroconductive roller for an electrophotographic printer. The roller comprises a polyurethane composition containing a polyurethane and an ionic liquid. The cation of the ionic liquid is an organic cation. The polyurethane composition has a specific resistivity of 1×105 Ω·cm to 1×108 Ω·cm.
Claims15
An electroconductive roller for an electrophotographic printer, said roller comprising a polyurethane composition containing a polyurethane and an ionic liquid, wherein the cation of the ionic liquid is an organic cation, and wherein the polyurethane composition has a specific resistivity of 1×105 Ω·cm to 1×108 Ω·cm.
A liquid electrophotographic printer comprising an electroconductive roller comprising a polyurethane composition containing a polyurethane and an ionic liquid, wherein the cation of the ionic liquid is an organic cation, and wherein the polyurethane composition has a specific resistivity of 1×105 Ω·cm to 1×108 Ω·cm.
A method of developing an ink, said method comprising:
- using an electric field to apply a liquid electrophotographic ink comprising an organic solvent to a surface of a developer roller,
- removing organic solvent from a surface of a developer roller using a secondary roller, and
- transferring the remaining electrophotographic ink from the surface of the developer roller to a photo-imaging plate to create an image,
- wherein the developer roller comprises a polyurethane composition containing a polyurethane and an ionic liquid, wherein the cation of the ionic liquid is an organic cation, and wherein the polyurethane composition has a specific resistivity of 1×105 Ω·cm to 1×108 Ω·cm.
Dependencies are inferred from the claim text.