Coated printable substrates providing higher print quality and resolution at lower ink usage
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B41M-005/00
B41M-005/52
B41M-005/50
출원번호
US-0188953
(2011-07-22)
등록번호
US-8795796
(2014-08-05)
발명자
/ 주소
Koenig, Michael F.
출원인 / 주소
International Paper Company
대리인 / 주소
Barnes, III, Thomas W.
인용정보
피인용 횟수 :
9인용 특허 :
68
초록▼
An article in the form of a paper substrate having a water-swellable substrate coating on at least one of the first and second surfaces at a thickness of less than about 10 microns and. The substrate coating has an amount of a coating pigment sufficient to impart a Parker Print Smoothness value of a
An article in the form of a paper substrate having a water-swellable substrate coating on at least one of the first and second surfaces at a thickness of less than about 10 microns and. The substrate coating has an amount of a coating pigment sufficient to impart a Parker Print Smoothness value of at least about 4 to the at least one surface and is dispersed in a water-swellable coating pigment binder matrix in a coating pigment to binder matrix weight ratio of at least about 2:1. The coating pigment has larger porous coating pigment particles, and smaller coating pigment particles in a weight ratio of at least about 0.2:1. The substrate coating provides an ink-receptive porous surface. Also, a method for preparing such coated paper substrates, as well as a method for printing an image on the coated paper substrate with an inkjet printer using a lower ink usage level.
대표청구항▼
1. An article comprising: a paper substrate having a first surface and a second surface, wherein the paper substrate has a Hercules Sizing Test (HST) value of up to about 50 seconds as measured using the procedure of TAPPI standard method T-530 pm-89; anda water-swellable substrate coating on at lea
1. An article comprising: a paper substrate having a first surface and a second surface, wherein the paper substrate has a Hercules Sizing Test (HST) value of up to about 50 seconds as measured using the procedure of TAPPI standard method T-530 pm-89; anda water-swellable substrate coating on at least one of the first and second surfaces which has a thickness of less than about 10 microns and provides an ink-receptive porous surface, wherein the substrate coating comprises: a water-swellable coating pigment binder matrix, wherein the binder matrix comprises a water-soluble polymer binder and a polymer latex binder in a weight ratio of at least about 1:1 and which have been crosslinked; andan amount of a coating pigment sufficient to impart a Parker Print Smoothness value as measured by TAPPI test method T-555 om-99 of at least about 4 to the at least one of the first and second surfaces which is dispersed in the binder matrix in a weight ratio of coating pigment to binder matrix of at least about 2:1, and wherein the coating pigment comprises: larger porous coating pigment particles having a particle size above about 1 micron and an effective pore volume of at least about 0.1 cc/gm, andsmaller coating pigment particles having a particle size of about 1 micron or less;wherein the larger porous coating pigment particles to smaller coating pigment particles are in a weight ratio of least about 0.2:1. 2. The article of claim 1, wherein the substrate coating is on both the first and second surfaces. 3. The article of claim 1, wherein the weight ratio of coating pigment to binder matrix is in the range of about 2:1 to about 10:1. 4. The article of claim 3, wherein the weight ratio of coating pigment to binder matrix is in the range of about 3:1 to about 5:1. 5. The article of claim 1, wherein the larger porous coating pigment particles comprise one or more of: ground calcium carbonate pigment particles, precipitated calcium carbonate pigment particles, absorbent plastic pigment particles, clay pigment particles, kaolin pigment particles, calcined clay pigment particles, talc pigment particles, titanium dioxide pigment particles, barium sulfate pigment particles, silica pigment particles, or zeolite pigment particles. 6. The article of claim 5, wherein the larger porous coating pigment particles comprise one or more of: ground calcium carbonate pigment particles or precipitated calcium carbonate pigment particles. 7. The article of claim 5, wherein the larger porous coating pigment particles have an effective pore volume of at least about 0.2 cc/gm. 8. The article of claim 7, wherein the larger porous coating pigment particles have an effective pore volume of at least about 0.3 cc/gm. 9. The article of claim 1, wherein the smaller coating pigment particles comprise one or more of: fumed silica pigment particles, alumina pigment particles, ground calcium carbonate pigment particles, precipitated calcium carbonate pigment particles, clay pigment particles, kaolin pigment particles, calcined clay pigment particles, bentonite clay pigment particles, talc pigment particles, titanium dioxide pigment particles, barium sulfate pigment particles, silica pigment particles, or zeolite pigment particles. 10. The article of claim 9, wherein the smaller coating pigment particles comprise fumed silica pigment particles. 11. The article of claim 1, wherein the weight ratio of larger porous coating pigment particles to smaller coating pigment particles is at least about 1:1. 12. The article of claim 11, wherein the weight ratio of larger porous coating pigment particles to smaller coating pigment particles is at least about 3:1. 13. The article of claim 1, wherein the weight ratio of water-soluble polymer binder to polymer latex binder is in the range of from about 1:1 to about 10:1. 14. The article of claim 13, wherein the weight ratio of water-soluble polymer binder to polymer latex binder is in the range of from about 1.5:1 to about 2.5:1. 15. The article of claim 1, wherein the water-soluble polymer binder comprises one or more of: starch binders, cellulosic binders, polyvinyl alcohol binders, polyacrylic acid binders, polymethacrylic acid binders, polyvinylamine binders, polyacrylamide binders, polyether binders, sulfonated polystyrene binders, or carboxylated polystyrene binders. 16. The article of claim 15, wherein the water-soluble polymer binder comprises a starch binder. 17. The article of claim 1, wherein the polymer latex binder comprises one or more of: styrene butadiene rubber latexes, acrylic polymer latexes, polyvinyl acetate latexes, styrene acrylic copolymer latexes, polyurethane latexes, starch/acrylic copolymer latexes, starch/styrene acrylic copolymer latexes, polyvinyl alcohol (PVOH)/styrene acrylic copolymer latexes, or PVOH/acrylic copolymer latexes. 18. The article of claim 17, wherein the polymer latex binder comprises a styrene-acrylic latex binder. 19. The article of claim 18, wherein the water-soluble polymer binder comprises an ethylated starch binder, and wherein the styrene-acrylic latex binder and the ethylated starch binder are crosslinked with glyoxal. 20. The article of claim 1, wherein the substrate coating has a thickness in the range of from about 3 to about 8 microns. 21. The article of claim 1, wherein the paper substrate has an HST value of up to about 40 seconds. 22. A method comprising the following steps: (a) providing a paper substrate having a first surface and a second surface, wherein the paper substrate has a Hercules Sizing Test (HST) value of up to about 50 seconds as measured using the procedure of TAPPI standard method T-530 pm-89; and(b) treating at least one of the first and second surfaces with a water-swellable substrate coating to provide a printable substrate, wherein the substrate coating has a thickness of less than about 10 microns and provides an ink-receptive porous surface, and wherein the substrate coating comprises: a water-swellable coating pigment binder matrix, wherein the binder matrix comprises a water-soluble polymer binder and a polymer latex binder in a weight ratio of at least about 1:1 and which have been crosslinked; andan amount of a coating pigment sufficient to impart a Parker Print Smoothness value as measured by TAPPi test method T-555 om-99 of at least about 4 to the at least one of the first and second surfaces, wherein the coating pigment is dispersed in the binder matrix in a coating pigment to binder matrix weight ratio of at least about 2:1, and wherein the coating pigment comprises: larger porous coating pigment particles having a particle size above about 1 micron and an effective pore volume of at least about 0.1 cc/gm; andsmaller coating pigment particles having a particle size of about 1 micron or less;wherein the larger porous coating pigment particles to smaller coating pigment particles are in a weight ratio of at least about 0.2:1. 23. The method of claim 22, wherein step (b) comprises treating both the first and second surfaces with the substrate coating. 24. The method of claim 22, wherein the weight ratio of coating pigment to binder matrix of the substrate coating of step (b) is in the range of about 2:1 to about 10:1. 25. The method of claim 24, wherein the weight ratio of coating pigment to binder matrix of the substrate coating of step (b) is in the range of about 3:1 to about 5:1. 26. The method of claim 22 wherein the larger porous coating pigment particles of the substrate coating of step (b) comprise one or more of: ground calcium carbonate particles, precipitated calcium carbonate particles, absorbent plastic pigment particles, clay pigment particles, kaolin pigment particles, calcined clay pigment particles, talc pigment particles, titanium dioxide pigment particles, barium sulfate pigment particles, silica pigment particles, or zeolite pigment particles. 27. The method of claim 26, wherein the larger porous coating pigment particles of the substrate coating of step (b) comprise one or more of: ground calcium carbonate pigment particles or precipitated calcium carbonate pigment particles. 28. The method of claim 26 wherein the larger porous coating pigment particles of the substrate coating of step (b) have an effective pore volume of at least about 0.2 cc/gm. 29. The method of claim 28 wherein the larger porous coating pigment particles of the substrate coating of step (b) have an effective pore volume of at least about 0.3 cc/gm. 30. The method of claim 22, wherein the smaller coating pigment particles of the substrate coating of step (b) comprise one or more of: fumed silica pigment particles, alumina pigment particles, ground calcium carbonate pigment particles, precipitated calcium carbonate pigment particles, clay pigment particles, kaolin pigment particles, calcined clay pigment particles, bentonite clay pigment particles, talc pigment particles, titanium dioxide pigment particles, barium sulfate pigment particles, or silica pigment particles. 31. The method of claim 30, wherein the smaller coating pigment particles of the substrate coating of step (b) comprise fumed silica pigment particles. 32. The method of claim 31, wherein the weight ratio of larger porous coating pigment particles to smaller coating pigment particles of the substrate coating of step (b) is at least about 1:1. 33. The method of claim 32, wherein the weight ratio of larger porous coating pigment particles to smaller coating pigment particles of the substrate coating of step (b) is at least about 3:1. 34. The method of claim 22, wherein the weight ratio of water-soluble polymer binder to polymer latex binder of the substrate coating of step (b) is in the range of from about 1:1 to about 10:1. 35. The method of claim 34, wherein the weight ratio of water-soluble polymer binder to polymer latex binder of the substrate coating of step (b) is in the range of from about 1.5:1 to about 2.5:1. 36. The method of claim 22, wherein the water-soluble polymer binder of the substrate coating of step (b) comprises one or more of: starch binders, cellulosic binders, polyvinyl alcohol binders, polyacrylic acid binders, polymethacrylic acid binders, polyvinylamine binders, polyacrylamide binders, polyether binders, sulfonated polystyrene binders, or carboxylated polystyrene binders. 37. The method of claim 36, wherein the water-soluble polymer binder of the substrate coating of step (b) comprises a starch binder. 38. The method of claim 22, wherein the polymer latex binder of the substrate coating of step (b) comprises one or more of: styrene butadiene rubber latexes, acrylic polymer latexes, polyvinyl acetate latexes, styrene acrylic copolymer latexes, polyurethane latexes, starch/acrylic copolymer latexes, starch/styrene acrylic copolymer latexes, polyvinyl alcohol (PVOH)/styrene acrylic copolymer latexes, PVOH/acrylic copolymer latexes, or epoxy latexes. 39. The method of claim 38, wherein the polymer latex binder of the substrate coating of step (b) comprises a styrene-acrylic latex binder. 40. The method of claim 39, wherein the water-soluble polymer binder of the substrate coating of step (b) comprises an ethylated starch binder, and wherein the styrene-acrylic latex binder and the ethylated starch binder are crosslinked with glyoxal. 41. The method of claim 22, wherein the substrate coating of step (b) has a thickness in the range of from about 3 to about 8 microns.
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