Oce-Nederland B.v.

Robert P Faessen

Gerardus C Vercoulen

Marcel L Pennings

Arnold B Van Der Meij

A colored magnetically attractable toner powder comprising magnetically attractable material finely distributed in, or enveloped by, a coloring substance of thermoplastic resin and yellow fluorescent dye. The combination of yellow fluorescent dye and thermoplastic resin is selected such that a standard mass which comprises titanium dioxide and said thermoplastic resin in a weight proportion of 1:4, and also comprises yellow fluorescent dye in such an amount that the maximum fluorescence is observed, has the following characteristics: light-reflection between 400 and 450 nm at most 15%, fluorescence peak between 500 and 580 nm, light-reflection at fluorescence peak at least 120.degree., lightness at least 90, chroma at least 90.

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Best, Netherlands

Robert P Faessen