Step 17 - Brevetto

Il brevetto scelto è relativo ai toner ed in particolare ai processi che utilizzano aggregazione e coalescenza o fusione di lattici, colorante, come pigmento. Nel brevetto si spiegano dettagliatamente i passaggi per ottenere un lime-green, specificando le dosi di pigmenti di diversi colori da utilizzare.


US6413692B1:
Inventor: Chieh-Min Cheng
Current Assignee: Xerox Corp
Original Assignee: Xerox Corp

Priority date: 2001-07-06 

Filing date: 2001-07-06
Publication date: 2002-07-02
Grant date: 2002-07-02


Estratto:

"[...]a lime green custom color toner prepared by mixing yellow, cyan and magenta pigment encapsulated latexes wherein the yellow pigment encapsulated latex is present in an amount of from about 25 to about 40 weight percent, the cyan pigment encapsulated latex is present in an amount of from about 25 to about 40 weight percent, and the magenta pigment encapsulated latex is present in an amount of from about 25 to about 40 weight percent, based on the total pigment encapsulated latex mixture, or there may be mixed a number, such as four, of encapsulated latexes, and wherein each of the latexes contains a polymer shell and a core of a dissimilar colorant, such as black, green, yellow, cyan, magenta, brown, blue, and the like."