Color magnetic toner and process for producing the same

Details Color magnetic toner and process for producing the same Color magnetic toner and process for producing the same

G - Physics

03

G

G03G 9/083 (2006.01) G03G 9/08 (2006.01) G03G 9/09 (2006.01)

Patent

CA 2258098

It is to provide a powder for use as a raw material for color magnetic toners for use in a color copier or the like which have been colored vividly as well as in white, and a dry color magnetic toner which is obtained from the raw material. The dry color magnetic toner comprises a powder comprising a light- interference multilayered film formed on a magnetic particle and at least one organic polymer coating film or a colored film on the surface of the powder. The process for producing the dry color magnetic toner comprises coating the surface of the powder having thereon a light-interference multilayered film with at least one organic polymer coating film.

L'invention concerne un matériau pulvérulent conçu pour un toner magnétique vivement coloré et contenant une couleur blanche utilisée dans un photocopieur couleur, ainsi qu'un toner sec magnétique coloré préparé à partir dudit matériau. Ce toner contient une poudre comprenant un revêtement à couches multiples à interférence lumineuse déposé sur une particule magnétique et au moins une couche de revêtement en polymère organique ou une couche colorée déposée sur la surface de la poudre. Le procédé de préparation consiste à appliquer au moins une couche de revêtement en polymère organique à la surface d'une poudre possédant un revêtement à couches multiples à interférence lumineuse.

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