Gripper discharge for sheet processing apparatus

A sheet processing apparatus comprising:

• a sheet discharge path that sequentially carries out a sheet;
• a processing tray that collects sheets from the sheet discharge path in the shape of a bunch;
• a stacker that is disposed on the downstream side of the processing tray and that holds the sheets from the processing tray;
• and
• bunch carrying-out means disposed in the processing tray to carry out a bunch of sheets toward the stacker;
• wherein the bunch carrying-out means is comprised of
• a carrier member disposed movably in a sheet-bunch carrying-out direction of the processing tray, and
• a sheet engagement member that engages with the bunch of sheets on the processing tray, and the sheet engagement member is mounted on the carrier member to be able to move to positions in the sheet-bunch carrying-out direction, and
• wherein the carrier member has carrier driving means for moving the carrier member to positions in the sheet-bunch carrying-out direction along the processing tray,
• the sheet engagement member has engagement member driving means for moving the sheet engagement member to position in the sheet-bunch carrying-out direction along the carrier member, and
• control means controlling the carrier driving means and the engagement member driving means controls the carrier driving means to move the carrier member to a front end from a base end of the processing tray, while controlling the engagement member driving means to travel between a base-end storing position overlapping with the carrier member and a front-end carrying-out position protruding from the carrier member in the sheet-bunch carrying-out direction.

A sheet processing apparatus, comprising:

• a sheet discharge path that sequentially carries out a sheet;
• a processing tray that collects sheets from the sheet discharge path in a shape of a bunch;
• a stacker that is disposed on a downstream side of the processing tray and that holds the sheets from the processing tray;
• and
• a bunch carrying-out device disposed in the processing tray to carry out a bunch of sheets toward the stacker,
• wherein the bunch carrying-out device comprises:
• a carrier member disposed movably in a sheet-bunch carrying-out direction relative to the processing tray,
• a carrier driving device attached to the carrier member for moving the carrier member in the sheet-bunch carrying out direction relative to the processing tray, and
• a sheet engagement member disposed on the carrier member, the sheet engagement member engaging the bunch of sheets on the processing tray, and being mounted on the carrier member to move in the sheet-bunch carrying-out direction relative to the carrier member,
• wherein the carrier driving device moves the carrier member to position in the sheet-bunch carrying-out direction along the processing tray, and
• the sheet engagement member has an engagement member driving device for moving the sheet engagement member to position in the sheet-bunch carrying-out direction along the carrier member, and
• wherein a control device controlling the carrier driving device and the engagement member driving device controls the carrier driving device to move the carrier member to a front end from a base end of the processing tray, while controlling the engagement member driving device to travel between a standby position and a front-end carrying-out position.