Oce-nederland B.v.

Martin Bakker

Johannes G Van Stiphout

Jacobus H Schonenberg

Jacobus H Peulen

Martinus J Huijben

Johannes A Van Laarhoven

A method of forming a multi-color image, comprising image elements in a first color which along at least part of their circumference adjoin image elements of one or more following colors wherein separation images in the first, second, third and any following color are each built up from image dot patterns of colored toner powder. The separation images are transferred to an intermediate support to collect said separate images to form a multi-color image. The multi-color image is then transferred from the intermediate support to an image receiving material. The second and each following generated separation image is generated so that the image elements, which on transfer onto the intermediate support are required to adjoin image elements of a separation image already transferred thereto previously, at least partially overlap said previously transferred image elements. The transfer of the second and each following separation image to the intermediate support is effected by pressing the element which bears the separation image against the intermediate support with a force of no more than 1000N per linear meter, whereby the intermediate support has a resilient surface. The invention also relates to apparatus for performing the method.

Method of and apparatus for forming a multi-color image

A colored magnetically attractable toner powder in which the individual toner particles comprise a core containing magnetically attractable material, a light-reflecting layer which envelops the core and comprises light-reflecting pigment, yellow-fluorescent dye and a binder in which the dye fluoresces, and a coloring layer which covers the light-reflecting layer and comprises yellow-fluorescent dye, optionally in an admixture with other fluorescent dye or dyes or pigments, and a binder in which the fluorescent dye or dyes fluoresce(s).

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Grubbenvorst, Netherlands

Martin Bakker