A cleaning device includes: a cleaning blade which removes liquid
developer including toner particles and carrier liquid by bringing a
contact corner portion constituted by a first surface and a second
surface into contact with a cleaned body which is rotated or circulated
while holding the liquid developer; a blade supporting body which
supports the cleaning blade at the first surface of the cleaning blade or
a surface on the side opposite to the first surface; a pressing member
which presses the contact corner portion of the cleaning blade against
the cleaned body; and seal members disposed at side ends in the first
direction of the cleaning blade and having projecting portions which
project further than the second surface on the side opposite to a third
surface which is on the side opposite to the second surface.