FOOD TONER Russian patent published in 2012 - IPC A23L1/27 

FIELD: food industry.

SUBSTANCE: invention relates to food industry. The method for creation of image on an object involves electrostatic transfer of toner onto the object surface and at least melting of the toner on the object surface. The toner essentially consists of food components including a thermoplastic polymer and a colouring agent, mixed in a liquid melt. Additionally, the toner contains an additive for triboelectric charge control. The colouring agent in the toner is dispersed and distributed within the thermoplastic polymer bulk. The thermoplastic element includes at least one substance selected from the group consisting of a copolymer of polyvinyl acetate and polyvinyl pyrrolidone; a mixture of polyvinyl acetate and polyvinyl pyrrolidone; polyacrylic acid cross-linked with allyl cellulose or an allyl ether or pentaerythritol; tragacanth gum; copolymer of poly-α- hydroxy carboxylic acid with polyol; propylene glycol alginate; a fumaric acid ether; sorbitan monostearate; sorbitan tristearate; sorbitan monostearate polyoxyethylene; sorbitan tristearate polyoxyethylene and sorbitan monooleate polyoxyethylene.

EFFECT: invention enables production of food toner that may be applied onto thermally sensitive objects (such as chocolate confectionary products) without damage caused to them, sticks to the object surface as a result of melting and does not crumble.

22 cl, 5 ex