US 12,346,046 B2
Fixing film
Akeshi Asaka, Chiba (JP); Hiroki Muramatsu, Tokyo (JP); Naoki Akiyama, Ibaraki (JP); Hiroto Sugimoto, Ibaraki (JP); Yasuhiro Miyahara, Tokyo (JP); and Noriaki Kobayashi, Ibaraki (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 20, 2022, as Appl. No. 17/869,453.
Claims priority of application No. 2021-123507 (JP), filed on Jul. 28, 2021.
Prior Publication US 2023/0051709 A1, Feb. 16, 2023
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/206 (2013.01) [G03G 15/2057 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A fixing film comprising:
a cylindrical base layer;
an elastic layer formed on an outer peripheral surface of the cylindrical base layer, the elastic layer having a thickness of 30 μm to 500 μm and being formed of rubber including filler; and
a separation layer formed on an outer peripheral surface of the elastic layer and having a thickness of 15 to 25 μm,
wherein the separation layer includes fluororesin, and a degree of orientation of the fluororesin is greater than or equal to 40% and smaller than or equal to 59%, and
wherein thermal diffusivity in a thickness direction of the separation layer at a temperature of 170° C. is 5.9×10−8 m2/s to 6.8×10−8 m2/s.