Fixing device and fixing rotary member therefor
AssigneeCanon Kabushiki Kaisha
InventorMasaaki Sakurai
Life of this patent
Estimating the term…
Abstract
A fixing device includes a first rotary member and a second rotary member for pinching and transporting a bearing member for fixing a toner image formed thereon. The first and second rotary members are pressed to each other. At least the first rotary member is provided with a surfacial layer containing a mixture of fluorinated rubber and fluorinated resin powder.
Claims38
Fixing device comprising:
- a first rotary member contacting with an unfixed image;
- a second rotary member pinching and transporting together with said first rotary member a bearing member on which said unfixed image is to be fixed;
- pressing means to apply pressure on said unfixed image between said first and second rotary members;
- driving means for rotating said first and second rotary members;
- said first rotary member having a surface layer formed by using a mixture of rubber material and a resin material having releasability superior to said rubber material, said surface layer being formed by heating and sintering the mixture so as to concentrate resin material at the outer portion of said surface layer to give surface releasability and elasticity.
Fixing device comprising:
- a first rotary member contacting with an unfixed image;
- a second rotary member pinching and transporting together with said first rotary member a bearing member on which said unfixed image is to be fixed;
- pressing means to apply pressure on said unfixed image between said first and second rotary members;
- driving means for rotating said first and second rotary members;
- said second rotary member having a surface layer formed by using a mixture of rubber material and resin material having releasability superior to said rubber material, said surface layer being formed by heating and sintering the mixture so as to concentrate resin material at the outer portion of said surface layer to give surface releasability and elasticity.
Fixing device comprising:
- a first rotary member contacting with an unfixed image;
- a second rotary member pinching and transporting together with said first rotary member a bearing member on which said unfixed image is to be fixed;
- pressing means to apply pressure on said unfixed image between said first and second rotary members;
- driving means for rotating said first and second rotary members;
- said first rotary member having an elastic surface layer having a top releasability surface, and said second rotary member having a surface layer formed by using a mixture of rubber material and resin material having releasability superior to said rubber material, said surface layer being formed by heating and sintering the mixture so as to concentrate resin material at the outer portion of said surface layer to give surface releasability and elasticity.
Fixing device comprising:
- a first rotary member contacting with an unfixed image;
- a second rotary member pinching and transporting together with said first rotary member a bearing member on which said unfixed image is to be fixed;
- pressing means to make said first and second rotary members pressing with each other;
- driving means for rotating said first and second rotary members;
- at least one of said first and second rotary members integrally having a surface layer formed by a mixture on an elastic rubber layer through a step of coating the mixture of rubber material and resin material having releasability superior to said rubber material on a semi-vulcanized base rubber surface of the rotary member and heating-sintering the whole of the rotary member so as to concentrate the resin material of said mixture at the outer portion of the surface of the rotary member.
A rotary member for fixing, which contacts with an unfixed image comprises a surface layer formed by using a mixture of rubber material and a resin material having releasability superior to said rubber material, said surface layer being formed by heating and sintering the mixture so as to concentrate said resin material at the outer portion of the surface layer, the surface layer having a surface releasability and elasticity.
A rotary fixing member to be used for the back surface of a bearing member, on the front surface of which an unfixed image may be fixed, comprises a surface layer formed by using a mixture of rubber material and resin material having releasability superior to the rubber material, said surface layer being formed by heating and sintering the mixture so as to concentrate said resin material at the outer portion of the surface layer, the surface layer having a surface releasability and elasticity.
Dependencies are inferred from the claim text.