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US 10,369,828 B2Granted
Glossy media sheet
AssigneeHewlett-Packard Development Company, L.P.
InventorRichard J. Mcmanus
Life of this patent
Estimating the term…
Abstract
A media sheet has an image-receiving layer that includes about 30 to about 70 percent calcined clay.
Claims16
A media sheet, comprising:
- a substrate;
- and
- an inkjet image-receiving layer formed on the substrate as an outermost layer of the media sheet, the inkjet image-receiving layer having a thickness from about 2 microns to about 50 microns;
- wherein the inkjet image-receiving layer comprises about 25 to about 70 percent by dry weight of calcined clay having an oil absorption of greater than about 100 grams of oil per 100 grams of calcined clay, and a median particle size of less than about 1.6 microns;
- wherein the inkjet image-receiving layer also comprises about 30 to about 60 percent of kaolin clay or precipitated calcium carbonate, wherein said kaolin clay or said precipitated calcium carbonate have a median particle size of less than about 650 nanometers;
- wherein the gloss of the inkjet image-receiving layer is greater than about 50 when measured at a 75 degree viewing angle;
- and wherein the media sheet does not include an intermediate layer between the substrate and the image-receiving layer.
4 more elements
A media sheet comprising:
- a paper substrate;
- and
- an inkjet image-receiving layer formed on the paper substrate as an outermost layer of the media sheet, the inkjet image-receiving layer having a thickness from about 2 microns to about 50 microns;
- wherein the inkjet image-receiving layer comprises at least a first pigment for absorption and a second pigment for gloss;
- wherein the first pigment is calcined clay that makes up about 25 to about 70 percent of the inkjet image-receiving layer by dry weight and has an oil absorption of greater than about 100 grams of oil per 100 grams of calcined clay, and the calcined clay has a median particle size of less than about 1.6 microns;
- wherein the second pigment is an inorganic pigment that makes up about 30 to about 60 percent of the inkjet image-receiving layer by dry weight having a median particle size of less than about 650 nanometers;
- wherein the gloss of the inkjet image-receiving layer is from about 65 to about 75 when measured at a 75 degree viewing angle;
- and
- wherein the media sheet does not include an intermediate layer between the substrate and the image-receiving layer.
6 more elements
A method of forming a media sheet, comprising:
- forming an inkjet image-receiving layer overlying at least one surface of a substrate, the inkjet image-receiving layer comprising about 25 to about 70 percent by dry weight of calcined clay having an oil absorption of greater than about 100 grams of oil per 100 grams of calcined clay, said calcined clay has a median particle size of less than about 1.6 microns, the inkjet image-receiving layer has a thickness from about 2 microns to about 50 microns;
- wherein the inkjet image-receiving layer also comprises about 30 to about 60 percent of kaolin clay or precipitated calcium carbonate,
- wherein said kaolin clay and said precipitated calcium carbonate have a median particle size of less than about 650 nanometers;
- and
- wherein the gloss of the inkjet image-receiving layer is greater than about 50 when measured at a 75 degree viewing angle, and wherein the media sheet does not include an intermediate layer between the substrate and the inkjet image-receiving layer.
2 more elements
Dependencies are inferred from the claim text.