Active image state control with distributed actuators and...

Details Active image state control with distributed actuators and... Active image state control with distributed actuators and...

2008-09-10

2011-11-08

Porta, David (Department: 2884)

Electrophotography

Image formation

Development

C399S252000, C399S265000, C492S018000, C492S048000, C492S053000

Reexamination Certificate

active

08055165

ABSTRACT:
Exemplary embodiments provide a roll member that includes one or more controllable cells and methods for making and using the roll member to control an image (or toner) state thereon. The controllable cells can be disposed on a roll substrate and configured in a manner that each controllable cell can be addressed individually and/or as groups. Each controllable cell can be addressable to provide a surface vibration to release toner particles adhered/attracted thereto and can also be capable of sensing the toner state of the roll member and thus to control the image or toner state. In an exemplary embodiment, the disclosed roll member can be used as a donor roll for a development system of an electrophotographic printing machine to create controlled and desired toner powder cloud for high quality image development.

REFERENCES:
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James D. Patterson, “Micro-Mechanical Voltage Tunable Fabry-Perot Filters Formed in (111) Silicon”, NASA Technical Paper 3702, Sep. 1997.

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