Colored magnetically attractable toner powder

G - Physics – 03 – G

Patent

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Details

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

Patent

CA 2478273

A colored magnetically attractable toner powder containing magnetically attractable material and a coloring substance containing at least one thermoplastic resin and, as coloring constituent, a mixture of fluorescent dyes at least one dye satisfying the formula (see formula I) wherein X is an anion, such as, for example, tetrafluoroborate, boron fluoride, perchlorate, hexafluorozirconate or ethyl sulphate. The dye is preferably used in combination with a fluorescent dye of the type C.I. Basic Violet 11:1 (C.I. 45174) and possibly yellow-fluorescent dye. Improved magenta and red toner powders are obtained in this manner.

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