Readily deinkable toners

G - Physics – 03 – G

Patent

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Details

G03G 9/087 (2006.01) C08G 69/34 (2006.01) G03G 21/00 (2006.01)

Patent

CA 2517030

Broadly the invention provides for a deinkable toner composition, an image made with the deinkable toner, and a method for making the toner including a coloring agent; a thermoplastic polymer; and a protein. In another embodiment the toner includes a coloring agent and a thermoplastic polymer where the protein has been incorporated into the polymer itself. In typical embodiments the protein is derived from soybeans but may be from other plant or animal sources. Typically the toner has a positive triboelectric charge of between about 10 to about 40 microCoulomb/g, or a negative triboelectric charge of between about 10 to about 40 microCoulomb/g.

L'invention concerne de manière générale une composition de toner désencrable, une image produite au moyen de toner désencrable, ainsi qu'un procédé de production dudit toner qui comprend un agent colorant, un polymère thermoplastique et une protéine. Dans un autre mode de réalisation, ce toner comporte un agent colorant ainsi qu'un polymère thermoplastique dans lequel la protéine a été incorporée. Dans des modes de réalisation caractéristiques, la protéine est dérivée de graines de soja, mais peut aussi provenir d'autres sources végétales ou être d'origine animale. De manière caractéristique, le toner selon l'invention présente une charge triboélectrique positive comprise entre approximativement 10 et approximativement 40 microCoulomb/g, ou une charge triboélectrique négative comprise entre approximativement 10 et approximativement 40 microCoulomb/g.

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