Liquid electrophotographic printing apparatus and intermediate transfer members
AssigneeHP Indigo B.V.
InventorsSergey Inotaev, Raia Slivniak, Ido Finkelman, Dima Libster, Eran Shiran
Life of this patent
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Abstract
Herein is disclosed an intermediate transfer member for liquid electrophotographic printing. The intermediate transfer member may include at least one layer including a thermoplastic polyurethane. A liquid electrophotographic printer and a method of forming an intermediate transfer member are also described.
Claims11
An intermediate transfer member for liquid electrophotographic printing, the intermediate transfer member comprising at least one layer comprising a thermoplastic polyurethane, wherein the thermoplastic polyurethane is a polyester polyurethane made by reacting at least one polyester polyol intermediate with at least one diisocyanate and at least one chain extender.
An intermediate transfer member for liquid electrophotographic printing, the intermediate transfer member comprising at least one layer comprising a thermoplastic polyurethane, wherein the intermediate transfer member comprises, in the following order:
- a. a fabric layer;
- b. a compressible layer, which may have voids therein;
- c. a layer comprising electrically conductive particles;
- d. an optional compliant layer;
- and
- e. an outer release layer;
- wherein at least one of the compressible layer, the layer comprising electrically conductive particles, the optional compliant layer, and the outer release layer comprises the at least one layer comprising a thermoplastic polyurethane.
A liquid electrophotographic printer comprising:
- a photoimaging plate;
- and
- an intermediate transfer member comprising at least one layer comprising a thermoplastic polyurethane, the intermediate transfer member being, in use, to transfer electrophotographic ink from the photoimaging plate to a print substrate;
- wherein the thermoplastic polyurethane is a polyester polyurethane made by reacting at least one polyester polyol intermediate with at least one diisocyanate and at least one chain extender.
A method of forming an intermediate transfer member for liquid electrophotographic printing, the method comprising associating a plurality of layers to form the intermediate transfer member, at least one of the layers comprising a thermoplastic polyurethane;
- wherein the at least one of the layers comprising a thermoplastic polyurethane is associated with at least one of the plurality of layers by heat lamination, direct extrusion coating, or calendering.
A method of forming an intermediate transfer member for liquid electrophotographic printing, the method comprising associating a plurality of layers to form the intermediate transfer member, at least one of the layers comprising a thermoplastic polyurethane;
- wherein the association of the layer comprising a thermoplastic polyurethane is performed at a temperature above about 115° C.
Dependencies are inferred from the claim text.