Curl correcting device, image forming apparatus, and sheet post-processing device
AssigneeRicoh Company, Ltd.
InventorTakeshi Goto
Life of this patent
Estimating the term…
Abstract
A curl correcting unit can be attached in a normal orientation and inverse orientation. In the normal orientation, a sponge roller being on the lower side, a sliding plate is pressed down by a curl-correction-amount adjusting mechanism. When the sliding plate is pressed down, a roller-side plate is lifted up via a link, where the link works as a shaft of a seesaw that connects the sliding plate and the roller-side plate. As a result, the sponge roller moves up and comes into press-contact with a metallic roller. In the inverse orientation, the sponge roller being on the upper side, the roller-side plate is directly pressed down by the curl-correction-amount adjusting mechanism and thereby the sponge roller comes into press-contact with the metallic roller.
Claims12
A curl correcting device in which a soft roller and a hard roller having different degrees of hardness make a nip in such a manner the soft roller is in press-contact with the hard roller with the soft roller being depressed, the curl correcting device correcting curl on a paper sheet by causing the paper sheet to pass through the nip, the curl correcting device comprising:
- an inter-shaft distance adjusting unit that prolongs/shortens a distance between shafts of the soft roller and the hard roller;
- and
- a casing that supports both the soft roller and the hard roller and is attached to a main body in a detachable manner, wherein the casing can be attached in both a normal orientation and an inverse orientation in which positions of the hard roller and the hard roller with respect to a paper-sheet conveyance path is inverse relative to those in the normal orientation.
Dependencies are inferred from the claim text.