Transfer system with field tailoring

Details Transfer system with field tailoring Transfer system with field tailoring

G - Physics

03

G

G03G 15/16 (2006.01)

Patent

CA 2079614

A system for tailoring electrostatic fields in and around a transfer region in an electrostatographic printing apparatus. The system includes a toner transfer system for transferring charged toner particles from an imaging surface to a copy sheet and a transfer nip and a conductive pre-nip sheet guide member, as well as a conductive post-nip sheet guide member, wherein each sheet guide member is coupled to a biasing source. The pre-nip sheet guide member is biased to a polarity similar to the polarity of the charged toner while the post-nip sheet guide member is biased to a polarity opposite the polarity of the charged toner particles. The invention provides for efficient and effective toner transfer while suppressing the effects of lateral conduction of transfer biases through the copy sheet under high relative humidity conditions.

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