Sheet processing apparatus, image forming system, and image forming apparatus

An image forming system comprising:

• an image forming apparatus that forms an image on a sheet;
• and
• a sheet processor that processes a sheet that has an image formed by the image forming apparatus, wherein
• the sheet processor including:
• a sheet fastener in which a bundle of sheets is fastened by using a pair of pressing fastener members;
• a conveying member that conveys the bundle of sheets that are fastened by the sheet fastener;
• a separator that, after the sheet fastener performs a fastening operation on the bundle of sheets, moves both of the pressing fastener members, between which the bundle of sheets is interposed, so as to separate a sheet that adheres to the pressing fastener member via a pressing mechanism positioned near an area of the fastened bundle of sheets;
• and
• a controller that, after the separator finishes an operation to separate the sheet, controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener,
• wherein the separator includes a moving mechanism, the moving mechanism includes an eccentric cam and an arm member, one end of the arm member is secured to the eccentric cam, and the other end of the arm member is secured to the sheet fastener, and
• wherein when the eccentric cam is rotated in one direction, the sheet fastener is moved to a fastening position, and when the eccentric cam is rotated in other direction, the sheet fastener is moved to a home position.

An image forming apparatus that forms an image on a sheet, the image forming apparatus comprising a sheet processing apparatus, wherein

• the sheet processor including:
• a sheet fastener in which a bundle of sheets is fastened by using a pair of pressing fastener members;
• a conveying member that conveys the bundle of sheets that are fastened by the sheet fastener;
• a separator that, after the sheet fastener performs a fastening operation on the bundle of sheets, moves both of the pressing fastener members, between which the bundle of sheets is interposed, so as to separate a sheet that adheres to the pressing fastener member via a pressing mechanism positioned near an area of the fastened bundle of sheets;
• and
• a controller that, after the separator finishes an operation to separate the sheet, controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener,
• wherein the separator includes a moving mechanism, the moving mechanism includes an eccentric cam and an arm member, one end of the arm member is secured to the eccentric cam, and the other end of the arm member is secured to the sheet fastener, and
• wherein when the eccentric cam is rotated in one direction, the sheet fastener is moved to a fastening position, and when the eccentric cam is rotated in other direction, the sheet fastener is moved to a home position.

A sheet processing apparatus comprising:

• a sheet fastener in which a bundle of sheets is fastened by using a pair of pressing fastener members;
• a conveying member that conveys the bundle of sheets that are fastened by the sheet fastener;
• a separator that, after the sheet fastener performs a fastening operation on the bundle of sheets, moves both of the pressing fastener members, between which the bundle of sheets is interposed, so as to separate a sheet that adheres to the pressing fastener member via a pressing mechanism positioned near an area of the fastened bundle of sheets;
• and
• a controller that, after the separator finishes an operation to separate the sheet, controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener, wherein:
• the separator includes a moving mechanism, the moving mechanism includes an eccentric cam and an arm member,
• when the eccentric cam is rotated in one direction, the sheet fastener is moved to a fastening position, and when the eccentric cam is rotated in other direction, the sheet fastener is moved to a home position,
• after the pair of pressing fastener members is moved to the retracted position, the controller controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener,
• the separator includes a pressing member that presses the bundle of sheets,
• the moving mechanism moves the pair of pressing fastener members parallel to a surface of the sheet, and
• the moving mechanism moves the pair of pressing fastener members while the pressing member presses the bundle of sheets.

An image forming system comprising:

• an image forming apparatus that forms an image on a sheet;
• and
• a sheet processor that processes a sheet that has an image formed by the image forming apparatus, wherein
• the sheet processor including:
• a sheet fastener in which a bundle of sheets is fastened by using a pair of pressing fastener members;
• a conveying member that conveys the bundle of sheets that are fastened by the sheet fastener;
• a separator that, after the sheet fastener performs a fastening operation on the bundle of sheets, moves both of the pressing fastener members, between which the bundle of sheets is interposed, so as to separate a sheet that adheres to the pressing fastener member via a pressing mechanism positioned near an area of the fastened bundle of sheets;
• and
• a controller that, after the separator finishes an operation to separate the sheet, controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener, wherein:
• the separator includes a moving mechanism, the moving mechanism includes an eccentric cam and an arm member,
• when the eccentric cam is rotated in one direction, the sheet fastener is moved to a fastening position, and when the eccentric cam is rotated in other direction, the sheet fastener is moved to a home position,
• after the pair of pressing fastener members is moved to the retracted position, the controller controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener,
• the separator includes a pressing member that presses the bundle of sheets,
• the moving mechanism moves the pair of pressing fastener members parallel to a surface of the sheet, and
• the moving mechanism moves the pair of pressing fastener members while the pressing member presses the bundle of sheets.

An image forming apparatus that forms an image on a sheet, the image forming apparatus comprising a sheet processing apparatus, wherein

• the sheet processor including:
• a sheet fastener in which a bundle of sheets is fastened by using a pair of pressing fastener members;
• a conveying member that conveys the bundle of sheets that are fastened by the sheet fastener;
• a separator that, after the sheet fastener performs a fastening operation on the bundle of sheets, moves both of the pressing fastener members, between which the bundle of sheets is interposed, so as to separate a sheet that adheres to the pressing fastener member via a pressing mechanism positioned near an area of the fastened bundle of sheets;
• and
• a controller that, after the separator finishes an operation to separate the sheet, controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener, wherein:
• the separator includes a moving mechanism, the moving mechanism includes an eccentric cam and an arm member, and
• when the eccentric cam is rotated in one direction, the sheet fastener is moved to a fastening position, and when the eccentric cam is rotated in other direction, the sheet fastener is moved to a home position,
• after the pair of pressing fastener members is moved to the retracted position, the controller controls the conveying member so as to convey the bundle of sheets that are fastened by the sheet fastener,
• the separator includes a pressing member that presses the bundle of sheets,
• the moving mechanism moves the pair of pressing fastener members parallel to a surface of the sheet, and
• the moving mechanism moves the pair of pressing fastener members while the pressing member presses the bundle of sheets.