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US 2017/0071225 A1Published application
Food-grade toner
AssigneesMars, Incorporated, Torrey Pines Research
InventorsLydia E. Gutierrez M., Trevor Martin, Peter J. Mason
Life of this patent
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Abstract
A toner consists essentially of food-grade components. Because the toner consists essentially of food-grade components, it can be used to provide a coating or create an image on food products, including those intended for human or animal consumption.
Claims10
-13. (canceled)
A method of creating an image on an object, the method comprising:
- electrostatically transferring a toner to a surface of the object, and
- fusing at least a portion of the toner on the surface of the object,
- wherein the toner consists essentially of food-grade components and comprises a thermoplastic polymer, a colorant and a triboelectric charge control additive, and wherein the thermoplastic polymer comprises at least one member from 10 a group consisting of:
- a copolymer of polyvinyl acetate and polyvinylpyrrolidone,
- a mixture of polyvinyl acetate and polyvinylpyrrolidone,
- polyacrylic acid cross-linked with allyl sucrose or allyl ether or pentaerythritol, poly (1-vinyl-2-pyrrolidone),
- poly (N-vinyl-2-pyrrolidone),
- gum tragacanth,
- a copolymer of poly-a-hydroxy carboxylic acid with a polyol, propylene glycol alginate,
- a fumaric acid ester,
- sorbitan monostearate,
- sorbitan tristearate,
- polyoxyethylene sorbitan monostearate,
- polyoxyethylene sorbitan tristearate, and
- polyoxyethylene sorbitan monooleate.
12 more elements
Dependencies are inferred from the claim text.