The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1991
Filed:
Jun. 26, 1989
Gerardus C Vercoulen, Velden, NL;
Robert P Faessen, Best, NL;
Marcel L Pennings, Horst, NL;
Arnold B van der Meij, Venlo, NL;
Oce-Nederland B.V., , NL;
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.