Liquid developing head liquid developing unit and image forming

Details Liquid developing head liquid developing unit and image forming Liquid developing head liquid developing unit and image forming

1997-10-01

1999-05-04

Moses, Richard

Electrophotography

Image formation

Development

399249, 118259, G03G 1510

Patent

active

058996060

ABSTRACT:
A liquid developing head is arranged to confront a surface of an image bearing member via a developing gap and a squeeze gap and carries out a developing by use of a developing liquid. The liquid developing head includes a housing, a developing roller, supported by the housing, supplying the developing liquid to the developing gap by rotating so that a portion of the developing roller confronting the image bearing member moves in a direction which is the same as a moving direction of the surface of the image bearing member, a squeeze roller, supported by the housing and arranged on a downstream side of the developing roller in the moving direction of the surface of the image bearing member, removing a surplus developing liquid adhered on the surface of the image bearing member at the squeeze gap by rotating so that a portion of the squeeze roller confronting the image bearing member moves in a direction opposite to the moving direction of the surface of the image bearing member, a developing liquid supply path, formed within the housing and having an ejection hole located at a portion on an upstream side of the developing gap in the moving direction of the surface of the image bearing member, supplied with the developing liquid from outside, and a developing liquid recovery path, formed within the housing, forcibly recovering the surplus developing liquid in response to a suction force applied from the outside.

REFERENCES:
patent: 3256855 (1966-06-01), Oliphant
patent: 4127082 (1978-11-01), Kawabata
patent: 4648704 (1987-03-01), O'Leary
patent: 5078088 (1992-01-01), Nishikawa
patent: 5396316 (1995-03-01), Smith
PCT Application, Intern'l Publication No. WO 92/09014, May 29, 1992.

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