Wet type developing apparatus

Details Wet type developing apparatus Wet type developing apparatus

G - Physics

03

G

G03G 15/11 (2006.01) B41F 9/10 (2006.01) B41F 31/06 (2006.01) B41F 31/20 (2006.01) B41F 35/00 (2006.01)

Patent

CA 2738342

A wet type developing apparatus is provided that allows a residual liquid toner from a developing roller to be well recovered while avoiding occurrence of a caking phenomenon of residual liquid toner, or preventing the residual liquid toner from caking, at a periphery of a cleaning blade. Having a developing roller 2 driven to rotate in rotational contact with a photoconductor drum 1 and a cleaning roller 5 driven to rotate in rotational contact with the developing roller whereby an electrostatic latent image formed on a surface of the photoconductor drum is developed into a toner image with a liquid developer applied to a surface of the developing roller in rotational contact with the photo- conductor drum, the wet type developing apparatus comprises: a set charger 13 positioned so as to be opposite to a surface of the developing roller downstream of an area of rotational contact of the developing roller with the photoconductor drum in a rotation direction of the developing roller for applying negative charge to the surface of the developing roller; a liquid developer applying means 8, 9 disposed at one of: a position such that it is opposite to a surface of the developing roller between an area where the set charger is opposite to the developing roller and an area of rotational contact of the cleaning roller with the developing roller and a position such that it is opposite to a surface of the cleaning roller downstream of the area of rotational contact of the cleaning roller with the developing roller in a rotation direction of the cleaning roller; a first cleaning blade 10 disposed in contact with a surface of the cleaning roller downstream the area of rotational contact of the cleaning roller with the developing roller in the rotation direction of the cleaning roller; and a second cleaning blade 11 disposed in contact with a surface of the developing roller downstream of the area of rotational contact of the cleaning roller with the developing roller in the rotation direction of the developing roller.

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