Rotatable fixing member, manufacturing method thereof and fixing device
AssigneeCanon Kabushiki Kaisha
InventorsMasahito Omata, Shoji Umehara, Shuichi Tetsuno, Akeshi Asaka, Masayuki Onuma, Yusuke Baba, Kazuo Kishino
Life of this patent
Estimating the term…
Abstract
A rotatable fixing member includes an elastic layer, a primer layer provided on the elastic layer, and a parting layer provided on the primer layer. The primer layer contains a crystalline fluorocarbon polymer having a functional group and has a thickness of 850 nm or less. The parting layer is a coating layer of a crystalline fluorocarbon polymer.
Claims5
A rotatable fixing member comprising:
- an elastic layer;
- a primer layer provided on said elastic layer;
- and
- a parting layer provided on said primer layer,
- wherein said primer layer contains a crystalline fluorocarbon polymer having a functional group and has a thickness of 850 nm or less, and
- wherein said parting layer is a coating layer of a crystalline fluorocarbon polymer.
A fixing device comprising:
- a rotatable fixing member including an elastic layer, a primer layer provided on the elastic layer, and a parting layer provided on the primer layer;
- and
- a back-up member for creating a fixing nip together with said rotatable fixing member,
- wherein the primer layer contains a crystalline fluorocarbon polymer having a functional group and has a thickness of 850 nm or less, and
- wherein the parting layer is a coating layer of a crystalline fluorocarbon polymer.
A manufacturing method of a rotatable fixing member including an elastic layer, a primer layer and a parting layer, said manufacturing method comprising:
- a first step of applying a dispersion containing a crystalline fluorocarbon polymer having a functional group onto a surface of an elastic layer;
- a second step of forming a primer layer by drying the dispersion;
- a third step of decreasing a thickness of the primer layer to 850 nm or less by removing a part of the primer layer on a surface side of the parting layer;
- and
- a fourth step of forming a parting layer by coating a crystalline fluorocarbon polymer onto the surface of the primer layer decreased in thickness and then by baking the coated crystalline fluorocarbon polymer.
Dependencies are inferred from the claim text.