Low grammage recording medium
The present disclosure provides low grammage recording media, and associated methods and systems. In one example, a low grammage recording medium can comprise a raw base paper having a basis weight of 65 gsm or less, the raw base paper comprising wood fiber and 2 wt % to 10 wt % filler including calcium carbonate. A surface treatment solution is applied to the raw base paper and comprises a surface sizing agent and 3 wt % to 15 wt % calcium carbonate.
1. A low grammage recording medium, comprising:
a raw base paper having a basis weight of 65 gsm or less, the raw base paper, comprising:
a filler in an amount at from 2 wt % to 10 wt %, the filler including calcium carbonate; and
wood fiber; and
a surface treatment solution applied to the raw base paper, the surface treatment solution, comprising:
calcium carbonate in an amount at from 3 wt % to 15 wt %, and
a surface sizing agent.
2. The low grammage recording medium of claim 1 , the filler also including titanium dioxide.
3. The low grammage recording medium of claim 1 , wherein the surface sizing agent is present in the surface treatment solution in an amount at from 0.1 wt % to 80 wt %.
4. The low grammage recording medium of claim 1 , wherein the surface sizing agent is selected from the group of: starches and starch derivatives; carboxymethylcellulose (CMC); methyl cellulose; alginates; waxes; wax emulsions; alkylketene dimer (AKD); alkyl succinic anhydride (ASA); alkenyl ketene dimer emulsion (AnKD); emulsions of ASA or AKD with cationic starch; ASA incorporating alum; polyvinyl alcohol; gelatin; acrylamide polymers; acrylic polymers or copolymers; vinyl acetate latex; polyesters; vinylidene chloride latex; styrene-butadiene; acrylonitrile-butadiene copolymers; styrene acrylic copolymers and copolymers; and mixtures thereof.
5. The low grammage recording medium of claim 1 , wherein the surface sizing agent is a starch or starch derivative.
6. The low grammage recording medium of claim 1 , wherein the surface treatment solution comprises titanium dioxide in an amount at from 1 wt % to 8 wt %.
7. The low grammage recording medium of claim 1 , wherein the surface treatment solution further comprises a metal salt in an amount at from 0.1 wt % to 30 wt %.
8. The low grammage recording medium of claim 1 , wherein the low grammage recording medium has an MD stiffness of at least 0.16 and an opacity of at least 78.
9. The low grammage recording medium of claim 1 , wherein the low grammage recording medium has an opacity of at least 82.
10. A method of making a low grammage recording medium, comprising applying a surface treatment solution onto a raw base paper, the raw base paper comprising wood fiber and from 2 wt % to 10 wt % of a filler which includes calcium carbonate, the surface treatment solution comprising a surface sizing agent and from 3 wt % to 15 wt % calcium carbonate, wherein the raw base paper has a basis weight of 65 gsm or less.
11. The method of claim 10 , wherein the filler further includes titanium dioxide and the surface sizing agent is a starch or starch derivative.
12. The method of claim 10 , wherein the surface treatment solution comprises titanium dioxide in an amount at from 1 wt % to 8 wt % and a metal salt in an amount at from 0.1 wt % to 30 wt %.
13. The method of claim 10 , wherein the low grammage recording medium has an MD stiffness of at least 0.16.
14. The method of claim 10 , wherein the low grammage recording medium has an opacity of at least 82.
15. A system for inkjet printing, comprising:
an inkjet ink loaded in an inkjet cartridge reservoir; and
a low grammage recording medium, the low grammage recording medium, comprising:
a filler in an amount at from 2 wt % to 10 wt %, the filler including calcium carbonate; and
wood fiber; and
a surface treatment solution applied to the raw base paper, the surface treatment solution comprising:
calcium carbonate in an amount at from 3 wt % to 15 wt %, and
a surface sizing agent.
16. The low grammage recording medium of claim 1 , wherein the amount of filler is from 2 wt % to 4 wt %, including less than about 3 wt % calcium carbonate and less than about 1 wt % titanium dioxide.
17. The low grammage recording medium of claim 16 , wherein the low grammage recording medium has an opacity of at least 82.