Electrophotographic toner and developer comprising a magenta...

Details Electrophotographic toner and developer comprising a magenta... Electrophotographic toner and developer comprising a magenta...

G - Physics

03

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G03G 9/09 (2006.01) C09B 63/00 (2006.01) C09D 5/03 (2006.01) C09D 7/12 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01) H01G 7/02 (2006.01)

Patent

CA 2207666

Electrophotographic toner and developer comprising a magenta azo pigment The use of an azo pigment of the formula (1) Image (1) as a colorant in electrophotographic toners and developers, powders and powder coatings and in electret materials, wherein the azo pigment powder has a specific surface area of more than 70 m2/g and wherein the azo pigment particles have a length-to-width ratio of on average less than 2.8:1 and a mean particle size d50 of less than 130 nm.

Toner et révélateur électrophotographiques, renfermant un pigment azoïque magenta. Utilisation d'un pigment azoïque de formule (1) Image (1) comme colorant dans les toners et les révélateurs d'électrophotographie, dans des poudres et des revêtements pulvérulents, ainsi que dans des électrets, où la poudre du pigment azoïque a une aire surfacique spécifique de plus de 70 m2/g, et où les particules de pigment azoïque possèdent un rapport longueur/largeur inférieur en moyenne à 2,8/1 et une taille moyenne d50 inférieure à 130 nm.

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