Binding member, binding apparatus, and image processing system

A binding member comprising:

• 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 pared with the upper teeth,
• wherein at least one of the upper teeth and the lower teeth has a tooth surface length that is partially shortened without changing a positional relationship of inclined surfaces of teeth.

A binding member comprising:

• 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,
• wherein the upper teeth and the lower teeth includes:
• a first tooth row having a first tooth form having a first positional relationship of inclined surfaces the first positional relationship being suitable for binding a first binding number of sheets;
• and
• a second tooth row having a second tooth form having a second positional relationship of inclined surfaces, the second positional relationship being suitable for binding a second binding number of sheets which is smaller than the first binding number of sheets.

A binding apparatus comprising:

• a holding section configured to hold a recording material bundle;
• and
• a binding member including a pair of upper teeth and lower teeth, the binding member being configured to form a convex-concave portion on the recording material bundle held by the holding section, with the upper teeth and the lower teeth, so as to perform binding processing,
• wherein, when performing the binding processing by the upper teeth and the lower teeth, the binding member provides a difference in elongation amount of a recording material forming the recording material bundle between one end side and the other end side of every tooth row, or between one end side and the other end side of a tooth constituting the tooth row.

An image processing system comprising:

• an image forming section configured to form an image on a recording material;
• and
• a binding section configured to form a convex-concave portion on a bundle of the recording material formed with the image by the image forming section, with a pair of upper teeth and lower teeth, so as to perform binding processing,
• wherein, when performing the binding processing by the upper teeth and the lower teeth, the binding member provides a difference in elongation amount of a recording material forming the recording material bundle between one end side and the other end side of every tooth row, or between one end side and the other end side of a tooth constituting the tooth row.