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:
Nov. 30, 1999
Filed:
Jan. 05, 1998
Applicant:
Inventor:
Lloyd Douglas Clark, San Francisco, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F / ; B01F / ;
U.S. Cl.
CPC ...
366146 ; 366144 ; 399254 ;
Abstract
Electrographic toner fluid (15), contained in a reservoir (10), is convectively stirred through the application of a non-uniform thermal gradient by a heater (20). Convective flow in fluid (15) entrains colloidal particles (35) and other dissolved agents and causes them to be uniformly dispersed in the fluid (15), thus rendering the fluid (15) homogeneous and capable of making uniform prints. The heater (20) may be inside or outside the reservoir (10) and may comprise separate heaters, alternately or simultaneously energized.