# US 5,352,503 A · Recording paper for ink jet recording processes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,352,503 A - Document ID: US5352503A - Status: Granted - Kind: A - Application number: 07/947,571 - Filed: 1992-09-21 - Granted: 1994-10-04 - Earliest claimed: 1992-09-21 - Assignees: Rexham Graphics Inc. - Inventors: Mark C. Drake; Alex J. Miklasiewicz - Web page: https://patentgrep.com/patent/US5352503A ## CPC - B41M 5/52: Macromolecular coatings - B41M 5/508: {Supports} - B41M 5/5254: {characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers} - Y10T 428/31928: Ester, halide or nitrile of addition polymer - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention provides one with a recording paper useful in ink jet recording processes. The recording paper is comprised of a substrate and a coating, with the coating comprising a pigment and a binder. The binder contains a water-soluble polymer, such as polyvinyl alcohol, and a curl behavior enhancing amount of a polyether, e.g., a polyalkylene glycol such as polyethylene glycol. Generally, the polyether has an average molecular weight of at least 400. The use of the present ink jet recording paper has been found to exhibit excellent imaging performance as well as superior curl behavior. ## Claims ### Claim 1 A recording paper useful in ink jet recording comprised of a cellulose substrate and a coating, with the coating comprising a pigment and a binder, said binder being comprised of a water-soluble resin and a polyether, with the amount of polyether contained in the coating being at least 15 wt. % based on the total weight of the dry coating. ### Claim 2 (depends on 1) The recording paper of claim 1, wherein the polyether is polypropylene glycol or polyethylene glycol. ### Claim 3 (depends on 1) The recording paper of claim 1, wherein the amount of polyether contained in the coating is in the range of from about 15 to about 50 wt. % based on the total weight of the dry coating. ### Claim 4 (depends on 1) The recording paper of claim 1, wherein the amount of polyether contained in the coating is in the range of from about 20 to about 35 wt. % based upon the total weight of the dry coating. ### Claim 5 (depends on 1) The recording paper of claim 1, wherein the average molecular weight polyether contained in the coating is at least 400. ### Claim 6 (depends on 1) The recording paper of claim 1, wherein the water soluble resin is polyvinyl alcohol. ### Claim 7 (depends on 1) The recording paper of claim 1, wherein the coating further comprises a dye mordant. ### Claim 8 (depends on 1) The recording paper of claim 1, wherein the average molecular weight of the polyether in the coating is in the range of from about 700 to about 3,500. ### Claim 9 (depends on 1) The recording paper of claim 1, wherein the average molecular weight of the polyether in the coating is in the range of from about 1,000 to about 2,000. ### Claim 10 (depends on 1) The recording paper of claim 1, wherein the coating is comprised of polyvinyl alcohol and polyethylene glycol. ### Claim 11 (depends on 10) The recording paper of claim 10, wherein the average molecular weight of the polyethylene glycol is in the range of from about 1,000 to about 2,000. ### Claim 12 (depends on 10) The recording paper of claim 10, wherein the coating further comprises a dye mordant. ### Claim 13 (depends on 10) The recording paper of claim 10, wherein the polyethylene glycol is present in the coating in an amount ranging from about 20 to about 35 wt. % based upon the total weight of the dry coating. ### Claim 14 (depends on 12) The recording paper of claim 12, wherein the coating further comprises a dye mordant and the polyethylene glycol is present in the coating in an amount ranging from about 20 to about 35 wt. % based upon the total weight of the dry coating. ### Claim 15 (depends on 1) The recording paper of claim 1, wherein the recording paper further comprises a back coat. ### Claim 16 (depends on 14) The recording paper of claim 14, wherein the recording paper further comprises a back coat. ### Claim 17 (depends on 1) A process for generating images in an ink jet printing apparatus, comprising incorporating the recording paper of claim 1 into said ink jet printing apparatus, and forming an image on the ink jet recording paper by causing ink to be expelled onto the coated surface. ### Claim 18 (depends on 17) The process of claim 17, wherein the ink is of different colors so that the image formed on the recording paper is a color image. ### Claim 19 (depends on 17) The process of claim 17, wherein the recording paper incorporated into the ink jet printing apparatus has a coating comprised of polyvinyl alcohol and polyethylene glycol. ### Claim 20 A recording paper useful in ink jet recording comprised of a cellulose substrate and a coating, with the coating comprising a pigment and a binder, said binder being comprised of a water soluble resin and a polyether having an average molecular weight of at least about 1,000, and with the amount of polyether contained in the coating being at least 15 weight % based on the total weight of the dry coating. ### Claim 21 (depends on 20) The recording paper of claim 20, wherein the polyether is polypropylene glycol or polyethylene glycol.