US12152154B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12152154-B2 |
| Application number | US-202016888220-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 29, 2020 |
| Priority date | Jun 6, 2019 |
| Publication date | Nov 26, 2024 |
| Grant date | Nov 26, 2024 |
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There are provided a coating composition for applying inkjet printing thereto to form a marked preparation, the composition providing good ink affinity, suppression of ink bleed, and excellent gloss; and others. More specifically, there are provided a composition for applying inkjet printing thereto to form a marked preparation, the composition including a water-soluble cellulose ether having a viscosity at 20° C. of from 2 to 50.0 mPa·s, as determined in 2% by mass aqueous solution, polyvinyl alcohol, and a solvent, wherein a mass ratio of the water-soluble cellulose ether to the polyvinyl alcohol is from 99.0:1.0 to 55.0:45.0; a method for producing a preparation marked with aqueous ink, including a coating step of coating an object with the composition to form a coating layer, and a printing step of inkjet-printing on the coating layer with aqueous ink to obtain a preparation marked with aqueous ink; and others.
Opening claim text (preview).
The invention claimed is: 1. A method for producing a tablet marked with aqueous ink, comprising: a coating step of coating an object with a composition comprising a water-soluble cellulose ether having a viscosity at 20° C. of from 2.0 to 50.0 mPa·s, as determined in a 2% by mass aqueous solution thereof, polyvinyl alcohol, and a solvent, wherein a mass ratio of the water-soluble cellulose ether to the polyvinyl alcohol is from 99.0:1.0 to 55.0:45.0, to form a coating layer on the object; and a printing step of inkjet-printing on the coating layer with the aqueous ink to obtain the tablet marked with the aqueous ink. 2. The method according to claim 1 , wherein the object is a core comprising an active ingredient. 3. The method according to claim 2 , wherein the aqueous ink contains a pigment. 4. The method according to claim 1 , wherein the water-soluble cellulose ether is selected from the group consisting of an alkyl cellulose, a hydroxyalkyl cellulose, and a hydroxyalkyl alkyl cellulose. 5. The method according to claim 1 , wherein the polyvinyl alcohol has a degree of saponification of 74.0 mol % or more. 6. The method according to claim 1 , wherein the solvent is selected from the group consisting of water and lower alcohols having 1 to 3 carbon atoms. 7. A tablet marked with aqueous ink, the tablet comprising: a coating layer comprising a water-soluble cellulose ether having a viscosity at 20° C. of from 2.0 to 50.0 mPa·s, as determined in a 2% by mass aqueous solution thereof, and polyvinyl alcohol, wherein the mass ratio of the water-soluble cellulose ether to the polyvinyl alcohol is from 99.0:1.0 to 55.0:45; and a mark with the aqueous ink on the coating layer. 8. The tablet marked with aqueous ink according to claim 7 , wherein the water-soluble cellulose ether is selected from the group consisting of an alkyl cellulose, a hydroxyalkyl cellulose, and a hydroxyalkyl alkyl cellulose. 9. The tablet marked with aqueous ink according to claim 7 , wherein the polyvinyl alcohol has a degree of saponification of 74.0 mol % or more.
Cellulose; Modified cellulose · CPC title
Vinyl-type polymers · CPC title
Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects (B41J3/283, B41J3/286 take precedence; building up a 3D object using individual droplets from jetting heads B29C64/112) · CPC title
Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink · CPC title
Inkjet printing inks · CPC title
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