Apparatus and method for convective stirring of finely-divided p

Details Apparatus and method for convective stirring of finely-divided p Apparatus and method for convective stirring of finely-divided p

1998-01-05

1999-11-30

Cooley, Charles E.

Agitating

With heating or cooling

Electrical heating

366144, 399254, B01F 510, B01F 1506

Patent

active

059930535

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.

REFERENCES:
patent: 3782699 (1974-01-01), Canning
patent: 4814786 (1989-03-01), Hoisington et al.
patent: 5066517 (1991-11-01), Hanson et al.
patent: 5520763 (1996-05-01), Johnstone
patent: 5682584 (1997-10-01), Hattori et al.
patent: 5823676 (1998-10-01), Khijniak et al.
patent: 5835827 (1998-11-01), Kishimoto
patent: 5835828 (1998-11-01), Jyoroku

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