FIXING DEVICE AND IMAGE FORMING APPARATUS

• Main Authors: GOTO SO, YOSHINAGA HIROSHI, HASE TAKAMASA, UCHITANI TAKESHI, ISHII KENJI, TAKAGI HIROTADA, SATO MASAHIKO, YOSHIURA ARINOBU, SUZUKI AKIRA, YOSHIKAWA MASAAKI, OGAWA SADAFUMI, KAWADA TEPPEI, IMADA TAKAHIRO, YAMAJI KENSUKE, YUASA SHUTARO, SESHIMO TAKUYA, IWATANI NAOKI, SHIMOKAWA TOSHIHIKO, SAITO KAZUYA
• Format: Patent
• Language: English; Japanese
• Published: 10.03.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a fixing device capable of improving strength of a support member to prevent a nip forming member from bending.SOLUTION: A fixing device comprises: a rotatable endless fixing belt 21; a nip forming member 24 arranged inside the fixing belt 21; an opposite rotor 22 for forming a nip part N between the fixing belt 21 and the opposite rotor 22 by abutting on the nip forming member 24 through the fixing belt 21; a heating source 23 for heating the fixing belt 21; and a support member 25 for supporting the nip forming member 24. The support member 25 includes a base part 25a in contact with the nip forming member 24 and at least two or more rising portions 25b which rise in a pressing direction from the base part 25a. The rising portions 25b are disposed at respective distance. Two rising portions 25b are located at an end of or outside the nip part N.SELECTED DRAWING: Figure 5 【課題】支持部材の強度を向上させ、ニップ形成部材の撓みを防止することができる定着装置を提供する。【解決手段】回転可能な無端状の定着ベルト２１と、定着ベルト２１の内側に配設されたニップ形成部材２４と、定着ベルト２１を介してニップ形成部材２４と当接することにより定着ベルト２１との間にニップ部Ｎを形成する対向回転体２２と、定着ベルト２１を加熱する加熱源２３と、ニップ形成部材２４を支持する支持部材２５とを備えた定着装置におけるものである。支持部材２５は、ニップ形成部材２４と接触するベース部２５ａと、ベース部２５ａから押圧方向に立ち上がる少なくとも２つ以上の立ち上がり部２５ｂを有する。立ち上がり部２５ｂは、それぞれ距離をおいて配置されている。そのうち２つの立ち上がり部２５ｂは、ニップ部Ｎの端又は外側に位置する。【選択図】図５