# US 10,369,828 B2 · Glossy media sheet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,828 B2 - Document ID: US10369828B2 - Status: Granted - Kind: B2 - Application number: 11/398,786 - Filed: 2006-04-06 - Published: 2007-10-11 - Granted: 2019-08-06 - Earliest claimed: 2006-04-06 - Assignees: Hewlett-Packard Development Company, L.P. - Applicants: Richard J. Mcmanus - Inventors: Richard J. Mcmanus - Web page: https://patentgrep.com/patent/US10369828B2 ## CPC - B41M 5/5218: {characterised by inorganic additives, e.g. pigments, clays} - G03G 7/0013: {Inorganic components thereof} - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A media sheet has an image-receiving layer that includes about 30 to about 70 percent calcined clay. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The media sheet of claim 1, wherein the inkjet image-receiving layer further comprises a plastic pigment having a median particle size of less than about 500 nanometers. ### Claim 3 (depends on 2) The media sheet of claim 2, wherein the plastic pigment is present up to about 5 percent plastic pigment by dry weight. ### Claim 4 (depends on 1) The media sheet of claim 1, wherein said inkjet image-receiving layer comprises about 35 to about 60 percent calcined clay by dry weight. ### Claim 5 (depends on 1) The media sheet of claim 1, wherein the gloss of the inkjet image-receiving layer is from about 65 to about 75 when measured at a 75 degree viewing angle. ### Claim 6 (depends on 1) The media sheet of claim 1, wherein the inkjet image-receiving layer comprises precipitated calcium carbonate. ### Claim 7 (depends on 1) The media sheet of claim 1, wherein the inkjet image-receiving layer further comprises about 1 to about 4 percent plastic pigment by dry weight. ### Claim 8 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. ### Claim 9 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. ### Claim 10 (depends on 9) The method of claim 9, wherein forming the inkjet image-receiving layer overlying the at least one surface of the substrate comprises: coating the at least one surface with an aqueous coating containing said calcined clay, and at least one of said kaolin clay and said precipitated calcium carbonate. ### Claim 11 (depends on 10) The method of claim 10, wherein the aqueous coating comprises kaolin clay, or precipitated calcium carbonate, or both the kaolin clay and the precipitated calcium carbonate, wherein said kaolin clay and percent precipitated calcium carbonate has a median particle size of less than about 650 nanometers. ### Claim 12 (depends on 9) The method of claim 9 further comprising pre-coating the substrate before forming the inkjet image-receiving layer. ### Claim 13 (depends on 9) The method of claim 9, wherein the gloss of the inkjet image-receiving layer is from about 65 to about 75 when measured at a 75 degree viewing angle. ### Claim 14 (depends on 1) A method of printing, comprising: disposing a marking material on an inkjet image-receiving layer of the media sheet of claim 1. ### Claim 15 (depends on 14) The method of claim 14, wherein the disposing of the marking material on the inkjet image-receiving layer comprises ejecting liquid droplets of the marking material onto the inkjet image-receiving layer. ### Claim 16 (depends on 14) The method of claim 14, wherein the inkjet image-receiving layer further comprises at least kaolin clay, precipitated calcium carbonate, or both.