FIXING DEVICE, IMAGE FORMING APPARATUS, HEATING DEVICE, AND METHOD FOR MANUFACTURING HEATING DEVICE

• Main Authors: HAGA KOICHI, HAYASHI KAZUHIRO, MURATA MICHIAKI, YAMADA SHUICHI, TAKAHASHI MUTSUYA
• Format: Patent
• Language: English; Japanese
• Published: 19.10.2017
• Subjects: CINEMATOGRAPHY; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a fixing device that can accurately form a correction conductor on a heating element even when the heating element is formed on a curved surface, and thereby preventing the occurrence of fixing unevenness.SOLUTION: There is provided a fixing device comprising: a heating member including a substrate 110 that has a curved surface shape and includes an apex Q resulting from the curved surface shape, a resistance heating element 120 that is provided on the substrate 110 and generates heat with current, and a correction conductor 180 that is provided at at least one of the position of the apex Q and a position adjacent to the apex Q on the resistance heating element 120 and in contact with the resistance heating element 120 to correct a resistance value of the resistance heating element 120; a belt member that is in contact with the heating member to be heated and circulated; and a pressure member that is in contact with the belt member to form a nip part.SELECTED DRAWING: Figure 4 【課題】発熱体が曲面上に形成された場合でも補正用導体を発熱体上に精度良く形成することができ、定着むらが生じにくい定着装置等を提供する。【解決手段】曲面形状を有し曲面形状により生ずる頂部Ｑを有する基板１１０と、基板１１０上に設けられ電流によって発熱する抵抗発熱体１２０と、抵抗発熱体１２０上であって頂部Ｑの位置および頂部Ｑに隣接する位置の少なくとも一方に設けられ、抵抗発熱体１２０と接触して抵抗発熱体１２０の抵抗値を補正する補正用導体１８０と、を有する加熱部材と、加熱部材に接して加熱されるとともに循環するベルト部材と、ベルト部材に接してニップ部を形成する加圧部材と、を備える定着装置。【選択図】図４