BINDING MEMBER, SHEET PROCESSING DEVICE, IMAGE FORMING DEVICE AND IMAGE FORMING SYSTEM

• Main Authors: SHIBAZAKI YUSUKE, BANNO HIROKI, MORINAGA TAKUYA, SUZUKI NOBUYASU, TAKAHASHI KO
• Format: Patent
• Language: English; Japanese
• Published: 19.11.2020
• Subjects: BOOKBINDING; CONVEYING; FILES; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES ORPERMANENTLY ATTACHING OBJECTS THERETO; SPECIAL PRINTED MATTER; STORING; TRANSPORTING

To provide a binding member capable of ensuring a binding force that is relatively uniform with respect to the binding number and that retains the binding force when binding by crimp binding.SOLUTION: A pair of binding members 223a and 223b for crimping and binding the sheet bundle have three binding areas (third binding area C, first binding area A, and fourth binding area D) arranged in the longitudinal direction of the binding member. Each of the binding areas is provided with a crimping tooth 224 as a crimping portion for crimping the sheet bundle. Of the three binding areas (third binding area C, first binding area A, fourth binding area D), the tooth length H of a crimping teeth 224 in the central binding area (first binding area A) is longer than the tooth length H of the crimping teeth 224 in the binding areas (third binding area C and fourth binding area D) at both ends. Thus it is configured by combining one crimping tooth 224 with a portion having a high tooth depth H and a portion having a low tooth depth H.SELECTED DRAWING: Figure 10 【課題】圧着綴じによって綴じる場合に、綴じ枚数に対して比較的均等、かつ、綴じ力を保持するのに十分な綴じ力を確保することが可能な綴じ部材を提供する。【解決手段】シート束を圧着して綴じる一対の綴じ部材２２３ａ、２２３ｂであって、綴じ部材の長手方向に併設された３つの綴じ領域（第３綴じ領域Ｃ、第１綴じ領域Ａ、第４綴じ領域Ｄ）を有し、当該綴じ領域の各々には、シート束を圧着する圧着部としての圧着歯２２４を備え、３つの綴じ領域（第３綴じ領域Ｃ、第１綴じ領域Ａ、第４綴じ領域Ｄ）のうち、中央部の綴じ領域（第１綴じ領域Ａ）の圧着歯２２４の歯丈Ｈは、両端部の綴じ領域（第３綴じ領域Ｃ、第４綴じ領域Ｄ）の圧着歯２２４の歯丈Ｈよりも長いので、１つの圧着歯２２４に歯丈Ｈの高い部分と低い部分を組み合わせて構成する。【選択図】図１０