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:
Jan. 31, 2006
Filed:
Jun. 07, 2004
John Joseph Earley, Boulder, CO (US);
George Pharris Marshall, Boulder, CO (US);
John Melvin Olson, Boulder, CO (US);
Trent Duane Peter, Johnstown, CO (US);
Minerva Piffarerio, Erie, CO (US);
Vincent Wen-hwa Ting, Boulder, CO (US);
Ronald James Whildin, Boulder, CO (US);
John Joseph Earley, Boulder, CO (US);
George Pharris Marshall, Boulder, CO (US);
John Melvin Olson, Boulder, CO (US);
Trent Duane Peter, Johnstown, CO (US);
Minerva Piffarerio, Erie, CO (US);
Vincent Wen-Hwa Ting, Boulder, CO (US);
Ronald James Whildin, Boulder, CO (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Toner is rounded by vigorously mixing less than about 5 percent by weight of particulate silica to the total weight of a starting toner in a closed, recirculating air system. The starting toner contains at least about 4.5 percent by weight of the starting toner of a wax and additionally contains at least 5 percent by weight of the starting toner of a softening agent. The temperature during the mixing is no more than 13 degrees C. above the onset of the glass transition temperature of the starting toner. The final toner comprises rounded starting toner having particulate silica embedded during the mixing process.