| US 7,615,328 B2 | ||
| Low melt toners and processes thereof | ||
| Guerino G. Sacripante, Oakville (Canada); Fatima M. Mayer, Mississauga (Canada); Kimberly D. Nosella, Mississauga (Canada); Valerie M. Farrugia, Oakville (Canada); Raj D. Patel, Oakville (Canada); Milan Maric, Montreal (Canada); Allen K. Chen, Oakville (Canada); Edward G. Zwartz, Mississauga (Canada); and T. Hwee Ng, Mississauga (Canada) | ||
| Assigned to Xerox Corporation, Norwalk, Conn. (US) | ||
| Filed on Jun. 17, 2008, as Appl. No. 12/140,738. | ||
| Application 12/140738 is a division of application No. 10/948450, filed on Sep. 23, 2004, granted, now 7,402,371. | ||
| Prior Publication US 2009/0061349 A1, Mar. 05, 2009 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G03G 5/00 (2006.01) | ||
| U.S. Cl. 430—137.14 [430/109.4] | 3 Claims |
| 1. A process for preparing a low-melt toner, the process comprising:
forming a pre-toner mixture comprising a first alkali sulfonated branched polyester resin, a second alkali sulfonated crystalline
polyester resin and a colorant;
adding an aggregating agent to the pre-toner mixture and aggregating the mixture to form an aggregate mixture comprising a
plurality of aggregate toner particles;
adjusting the pH of the aggregate mixture to between about 5 and about 7;
coalescing the aggregate mixture at a temperature of from about 5 to about 20° C. above the glass transition temperature (Tg) of one of the first or second alkai sulfonated polyester resins to form a mixture of coalesced toner particles; and
cooling the mixture of coalesced toner particles.
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