Minimal liquid carrier transfer in an image formation process

Details Minimal liquid carrier transfer in an image formation process Minimal liquid carrier transfer in an image formation process

1995-02-03

1997-09-09

Braun, Fred L.

Electrophotography

Image formation

Development

399249, G03G 1310, G03G 1510

Patent

active

056666152

ABSTRACT:
An electrographic development process with liquid toner. In the process charged toner particles are moved electrostatically from the liquid dispersion containing them to a charged photoconductor surface. An intermediate development component collects the charged toner particles from the dispersion and carries them out of the liquid phase in a manner to reduce the amount of liquid carrier that is applied to the image bearing substrate or photoconductor. In one embodiment of the invention an intermediate conductive substrate and at least one squeeze mechanism are placed between the dispersion and the photoconductor surface. An electrical bias with the same polarity as the toner particles is applied between the conductive substrate and the first squeeze mechanism. In another embodiment of the invention, the toner dispersion is a high-concentrate slurry, and no roller is necessary between the dispersion and the photoconductor surface.

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