Sheet conveying apparatus, sheet treating apparatus and image forming apparatus

Abstract

A paper discharge roller pair, a roller support member, a support member rotation mechanism, a drive transmission unit, and a single drive source are provided; the paper discharge roller pair has a second roller disposed opposite to the first roller; the roller support member is freely rotatably supported The first roller can move between the first position where the first roller can cooperate with the second roller to discharge the sheet and the second position where the first roller is separated from the second roller; the support member turning mechanism makes the roller support member Rotation; the drive transmission part transmits the drive to the support member rotation mechanism; the single drive source transmits the drive to the drive transmission part. The roller support member is provided with a tooth-less gear portion and a cam stopper portion, and the support member turning mechanism has a tooth-less gear and a cam respectively corresponding to the tooth-less gear portion and the cam stopper portion of the roller support member, so that the roller support member can be Movement from the first position to the second position and movement of the roller support member from the second position to the first position.

Description

technical field [0001] The present invention relates to a sheet conveying device, a sheet processing device, and an image forming device having the same, and more particularly, to a sheet processing device and a sheet processing device capable of realizing large-capacity sheet processing with space saving, low cost, and power saving. its image forming device. Background technique [0002] In the past, for example, image forming apparatuses such as copiers, printers, and facsimiles have provided sheet processing devices in order to reduce the workload required for stapling processing on sheets such as copier paper after image formation. The apparatus sequentially takes the image-formed sheets into the apparatus, and performs binding processing on the sheets. [0003] Here, as such a sheet processing apparatus, there is known a type that is installed near the sheet discharge port of the main body of the image forming apparatus, and after printing on the side of the main body ...

AI Technical Summary

Problems solved by technology

[0007] However, the configuration used in the past device is to use only a cam to lift the roller holding member so that the roller pair is separated (refer to Japanese Patent Application Laid-Open No. 11-130326). In order to obtain a large space for stacking large-capacity paper, It is necessary to have a large difference between the maximum radius and the minimum radius of the cam, and as a result, a large cam must be used, and there is a problem of increasing the size of the device

In addition, the torque must be set corresponding to the maximum radius of the cam, and a large torque is required for separation. This requires a large motor, so there are problems of increasing the size of the device and increasing the cost.

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