Methods and devices for dispersion of high solids toner

Details Methods and devices for dispersion of high solids toner Methods and devices for dispersion of high solids toner

1991-11-25

1994-09-06

Donovan, Lincoln

Photocopying

Contact printing

Light boxes

106 32, 355260, 430115, G03G 1510

Patent

active

053452968

ABSTRACT:
The present invention relates to methods and devices for creating high shear forces to disperse high solids toner into a working developer solution. The high solids toner have a toner particle concentration of at least 40% by weight of the working developer solution. An image forming device having such dispersion system includes a latent image device for creating a latent image; a developer device for developing the latent image; a transfer device for receiving the developed latent image onto a predetermined image medium; a developer supplying device for recirculation of a working developer solution through the developer device; a replenishing device for supplying concentrated developer solution preferably at a rate equivalent to a consumption rate of the working developer solution in the developer device; and a dispersion device for dispersing the concentrated developer solution from the replenisher device into the working developer solution of the developer supplying device. The dispersion device includes a rotatable member, a mechanism for rotating the rotatable member, and a stationary member for creating a high shear force at a contact area between the rotatable and stationary members, the high shear force dispersing the concentrated developer solution into the developer solution.

REFERENCES:
patent: 4720731 (1988-01-01), Suzuki et al.
patent: 4794066 (1988-12-01), Taggi et al.
patent: 4860050 (1989-08-01), Kurotori et al.
patent: 4907028 (1990-03-01), Higashiyama
patent: 5078504 (1992-01-01), Landa et al.

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