Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1989-06-26
1991-06-04
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
4301066, G03G 9083, G03G 909
Patent
active
050213148
ABSTRACT:
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.
REFERENCES:
patent: 4443527 (1984-04-01), Heikens et al.
patent: 4623602 (1986-11-01), Bakker et al.
patent: 4865937 (1989-09-01), Santilli et al.
Faessen Robert P.
Pennings Marcel L. M.
van der Meij Arnold B. M. H.
Vercoulen Gerardus C. P.
Martin Roland
Oce'-Nederland, B.V.
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