Method and apparatus for the transfer of an electrostatically de

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Electrophoretic imaging – process – composition – or product

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430 35, 430126, 355 3P, 118647, G03G 1310

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046109390

ABSTRACT:
Method and apparatus for transferring an electrostatically deposited electrophoretic toner image including the step of transferring image-wise deposited toner particles dispersed in a stratum of carrier liquid having a volume resistivity of at least 10.sup.9 ohm.cm and a dielectric constant less than 3 from an electrically insulating surface onto a receptor element by contacting said liquid stratum while carried on the insulating surface with a surface of the receptor element while applying an electric field such that the receptor element has a polarity opposite to the polarity of the toner particles to effect such transfer, characterized in that before the image-wise liquid stratum touches the receptor element the carrier liquid stratum is given a corona-charge treatment by a corona-charge unit whereby said liquid stratum is charged to a polarity opposite to the charge of the toner particles.

REFERENCES:
patent: 4063808 (1977-12-01), Simpson
patent: 4073649 (1978-02-01), Scouten
patent: 4330788 (1982-05-01), Hinz et al.
patent: 4348098 (1982-09-01), Koizumi et al.

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