Imaging apparatus and method and liquid toner therefor

G - Physics – 03 – G

Patent

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G03G 9/13 (2006.01) G03G 11/00 (2006.01)

Patent

CA 2206330

Scuff resistance, abrasion resistance and peel resistance of a wide class of liquid toners may be improved by the addition of a minor amount of an additional material which, at the fusing temperature used for the toner, has a much lower viscosity, preferably several orders of magnitude lower, than the viscosity of the toner particles at the fusing temperature and which forms a separate phase from the toner particles when solidified. It is believed that such material, during the fusing process, migrates to the outer surface of the image. During cooling of the image after it is fused, the additional material forms a substantially separate phase resulting in a hard slippery coating of the additional material which protects the image from abrasion.

La résistance au frottement, la résistance à l'abrasion et la résistance au pelage d'une grande catégorie de toner liquides peuvent être améliorées par addition d'une petite quantité d'une substance additionnelle qui, à la température de fusion du toner, présente une valeur de viscosité beaucoup plus petite, de préférence plusieurs fois plus petite, que la valeur de viscosité des particules de toner à la température de fusion, et qui forme une phase séparée des particules de toner lorsqu'elle est solidifiée. On pense que de telles substances, pendant le processus de fusion, se déplacent vers la surface extérieure de l'image. Pendant le refroidissement de l'image, après sa fusion, la substance additionnelle forme une phase sensiblement séparée qui constitue un revêtement dur glissant qui protège l'image de l'abrasion.

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