| 摘要 |
A wet type image developing device for applying a developing liquid over an electrostatic latent image provided on a photosensitive member on a rotary drum. The developing device has an inner tubular member and an outer tubular member. The developing liquid is pressurizingly supplied into the inner tubular member, and the outer tubular member is radially outwardly expandable by the liquid introduction for providing a facial contact of the outer tubular member with the photosensitive member. The developing liquid is transuded into the outer tubular member and is oozed out for applying the liquid over the photosensitive member. If no liquid is supplied to the inner tubular member, the outer tubular member is radially inwardly shrunken for the separation of the outer tubular member from the photosensitive member.
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