US 11,982,961 B2
Fixing device
Hiroki Kawai, Chiba (JP); Yasuharu Toratani, Chiba (JP); Hiroshi Miyamoto, Saitama (JP); Akiyoshi Shinagawa, Saitama (JP); Ayano Ogata, Ibaraki (JP); Daigo Matsuura, Tokyo (JP); Misa Kawashima, Chiba (JP); Masanobu Tanaka, Chiba (JP); and Asuna Fukamachi, Chiba (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 9, 2023, as Appl. No. 18/166,651.
Claims priority of application No. 2022-028930 (JP), filed on Feb. 28, 2022.
Prior Publication US 2023/0273555 A1, Aug. 31, 2023
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2053 (2013.01) [G03G 15/2025 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fixing device comprising:
an endless belt configured to apply heat to a recording material;
a rotatable pressing member contacting an outer circumferential surface of the belt;
a pad member inside of the belt, configured to form a nip portion by nipping and feeding the belt between itself and the rotatable pressing member; and
a sliding member held by the pad member and configured to slide on an inner circumferential surface of the belt in the nip portion,
wherein the rotatable pressing member nips and feeds the recording material in the nip portion in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure,
wherein the sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections, and
wherein a shape of a surface of the sliding layer is a curved surface and a radius of curvature R of the curved surface satisfies 300 μm≤R≤850 μm.