Patent ID: 6311031
Filing Date: 2001-10-30
Classification: G03G

Abstract:
A transferring device comprising:transferring means for transferring a toner image on a photosensitive body onto an image receiving medium adsorbed electrostatically to a transferring belt and conveyed by the transferring belt;a first cleaning means which is selectively contactable with the transferring belt for cleaning toner from the transferring belt when brought in contact with the transferring belt;a second cleaning means which is selectively contactable with the transferring belt for cleaning toner from the transferring belt when brought in contact with the transferring belt, said second cleaning means being selectively contactable with the transferring belt at a position which is downstream, with respect to the direction of movement of the transferring belt, of a position at which the first cleaning means is brought in contact with the transferring belt;first control means for controlling a switching of the first and second cleaning means between:a first mode wherein the first cleaning means is brought into contact with the transferring belt at an initial stage of use wherein the running distance of the transferring belt is less than a prescribed value, anda second mode wherein, when the running distance of the transferring belt reaches the prescribed value, the first cleaning means is separated from the transferring belt and the second cleaning means is brought into contact with the transferring belt; andsecond control means for temporarily inducing both the first and second modes and temporarily causing the first and second cleaning means to both contact the transferring belt when a humidity of a transferring device operating environment exceeds a prescribed humidity or when the conveyance of image receiving medium becomes defective.