FIXATION MEMBER AND PRODUCTION METHOD THEREOF, FIXATION DEVICE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

• Main Authors: AKIYAMA NAOKI, SUGIMOTO TSUNETO, ABE KATSUYA, KISHINO KAZUO, SUZUKI TAKESHI, MIYAHARA YASUHIRO, MATSUNAKA KATSUHISA
• Format: Patent
• Language: English; Japanese
• Published: 21.01.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a fixation member including a silicone rubber elastic layer having a carbon nanotube contained therein, which suppresses peeling (adhesion failure) at the interface caused by insufficient adhesion between a base member and the silicone rubber elastic layer, and which secures adhesion durability.SOLUTION: A fixation member for electrophotography includes a base member, an elastic layer and a surface layer. In the fixation member, the elastic layer contains a silicone rubber as a base material and has a carbon nanotube contained therein as a filler. An elastic modulus ratio E200/E50 between an elastic modulus E50 at 50°C and an elastic modulus E200 at 200°C of the elastic layer is 0.5 or more and less than 1.0, the adhesive strength between the elastic layer and the base member is 3.0 N/cm or more and 20.0 N/cm or less, and the elastic layer is subjected to cohesion failure at the time of a peeling test. 【課題】カーボンナノチューブを配合したシリコーンゴム弾性層を有する定着部材を用いた際の、基材とシリコーンゴム弾性層との接着が不十分なことに伴う界面でのはく離（接着破壊）を抑制し、接着耐久性が確保された定着部材を提供する。【解決手段】基材、弾性層及び表層を有する電子写真用の定着部材であって、該弾性層がベース材としてシリコーンゴムを含み、充填剤としてカーボンナノチューブが含有されており、該弾性層の５０℃での弾性率Ｅ５０と、２００℃での弾性率Ｅ２００との比、Ｅ２００／Ｅ５０が０．５以上１．０未満であり、該弾性層と基材との接着強度が３．０Ｎ／ｃｍ以上２０．０Ｎ／ｃｍ以下で、且つ、はく離試験時に弾性層が凝集破壊することを特徴とする。【選択図】図１Ａ