A binding processing apparatus includes a pair of pressing members each including a concave-convex portion configured to form a concave part and a convex part in a recording material bundle. The concave-convex portion includes protrusion portions. Aside surface of each protrusion portion is inclined so that the protrusion portion is widened from an apex of the protrusion portion. The side surfaces of the protrusion portions of a first pressing member that is one of the pressing members and the side surfaces of the protrusion portions of a second pressing member that is the other of the pressing members intersect with each other during pressing when viewed in a column direction of the protrusion portions.

A binding processing apparatus includes a pair of pressing members each including a concave-convex portion configured to form a concave part and a convex part in a recording material bundle. The concave-convex portion includes protrusion portions. Aside surface of each protrusion portion is inclined so that the protrusion portion is widened from an apex of the protrusion portion. The side surfaces of the protrusion portions of a first pressing member that is one of the pressing members and the side surfaces of the protrusion portions of a second pressing member that is the other of the pressing members intersect with each other during pressing when viewed in a column direction of the protrusion portions.

There is provided a binding processing device including:

a first pressing member including a convex portion formed by a curved surface with a curvature and protruding toward a sheet bundle; and

a second pressing member including a concave portion formed by a curved surface with a curvature and configured to be combined with the convex portion through the sheet bundle, the second pressing member configured to press the sheet bundle sandwiched between the first and second pressing members, wherein

in a state where the convex portion of the first pressing member and the concave portion of the second pressing member are combined with each other, a gap is formed between the convex portion and the concave portion in a cross section of the first and second pressing members along a pressing direction, and

the gap has a volume larger than a volume of the sandwiched sheet bundle.

A binding member is provided and includes: upper teeth having a tooth form configured to form a convex-concave portion on a recording material bundle; and lower teeth having a tooth form configured to form the convex-concave portion on the recording material bundle, and paired with the upper teeth. At least one of the upper teeth and the lower teeth includes: a first tooth row having a first tooth form having a first shape suitable for binding a first binding number of sheets; and a second tooth row having a second tooth form having a second shape suitable for binding a second binding number of sheets which is smaller than the first binding number of sheets.

A post-processing apparatus which can respectively balance convenience of user using a manual stapling and convenience of user using an online stapling is provided. The finisher includes a stapler for performing predetermined post-processing on a sheet received and a control unit. The finisher also includes a stapler moving motor which moves the stapler to a position where first processing or second processing is performed. In the first processing, the predetermined post-processing is performed on a sheet which is conveyed from an image forming apparatus. In the second processing, the predetermined post-processing is performed on a sheet which is manually inserted.

A post-processing apparatus which can respectively balance convenience of user using a manual stapling and convenience of user using an online stapling is provided. The finisher includes a stapler for performing predetermined post-processing on a sheet received and a control unit. The finisher also includes a stapler moving motor which moves the stapler to a position where first processing or second processing is performed. In the first processing, the predetermined post-processing is performed on a sheet which is conveyed from an image forming apparatus. In the second processing, the predetermined post-processing is performed on a sheet which is manually inserted.

This compact binding device is such that binding operations can be carried out when the main body of the device is held. The binding device (1A) is provided with a cassette storage unit (60A) in which a cassette (8) can be detachably attached, said cassette housing an elongate tape (5) which has a piece (2) adhered thereto and is wound into a roll. The cassette housing unit (60A) is provided at the bottom of the device main body (110A), which comprises a base unit (11A) and a handle unit (12), and the cassette (8) does not protrude rearwards from the handle unit (12) and the base unit (11A).

This compact binding device is such that binding operations can be carried out when the main body of the device is held. The binding device (1A) is provided with a cassette storage unit (60A) in which a cassette (8) can be detachably attached, said cassette housing an elongate tape (5) which has a piece (2) adhered thereto and is wound into a roll. The cassette housing unit (60A) is provided at the bottom of the device main body (110A), which comprises a base unit (11A) and a handle unit (12), and the cassette (8) does not protrude rearwards from the handle unit (12) and the base unit (11A).

A binding process device includes an advancing member and an advancing unit. The advancing member has a first end and a second end located opposite from the first end and advances toward a surface of a recording-medium bundle so as to press against the recording-medium bundle. The advancing unit causes the advancing member to advance toward the surface of the recording-medium bundle. When the advancing member advances toward the surface of the recording-medium bundle so as to press against the recording-medium bundle, at least one of the first end and the second end of the advancing member is positioned outside an edge of the recording-medium bundle.

A series of conveyance paths to convey a recording medium is formed across a printer and a post-processing device in a printing system. The printing system includes: a detection unit that detects that the post-processing device has entered a predetermined state; and a paper feeding control unit that limits the number of recording media fed to the conveyance path, when it is not detected that the post-processing device has entered the predetermined state, based on the number of recording media conveyable to the post-processing device after the post-processing device enters the predetermined state.