Member for electrophotography, method for manufacturing member for electrophotography, and image-forming apparatus

1. A member for electrophotography, comprising

a substrate,

an elastic layer comprising a silicone rubber,

a surface layer comprising a fluorine resin, and

an adhesive layer between the elastic layer and the surface layer,

wherein the adhesive layer contains a polyimide silicone, and

wherein when a peel test of the surface layer from the elastic layer is conducted after the member is left in the environment of 260° C. for 10 hours, the elastic layer undergoes a cohesive failure.

2. The member according to claim 1 , wherein the elastic layer has a tensile strength of 0.4 MPa or more and 3.0 MPa or less.

3. The member according to claim 1 , wherein the elastic layer is a cured layer of an addition-curing silicone rubber composition.

4. The member according to claim 1 , wherein the elastic layer contains an unsaturated aliphatic group.

5. The member according to claim 1 , wherein the member is in the shape of a belt, and wherein the elastic layer has a thickness of 100 μm or more and 500 μm or less.

6. The member according to claim 1 , wherein the member is in the shape of a roller, and wherein the elastic layer has a thickness of 300 μm or more and 10 mm or less.

7. A method for producing a member for electrophotography having a substrate, an elastic layer containing a silicone rubber, and a surface layer containing a fluorine resin, the method comprising a step of:

bonding the elastic layer and the surface layer by forming, on a surface of the elastic layer, a coating of a polyimide silicone having a vinyl group in a molecule thereof, and curing the coating.

8. The method according to claim 7 , further comprising; forming the elastic layer by curing an addition-curing silicone rubber composition containing an addition-curing silicone rubber solution and titanium oxide in an anatase form.

9. The method according to claim 8 , wherein the addition-curing silicone rubber solution contains unsaturated aliphatic groups and active hydrogen groups in a ratio by number of 0.3 or more and 1.5 or less.

10. An image-forming apparatus comprising a fixing device including a fixing member and a heating unit,

the fixing member comprising a substrate,

an elastic layer comprising a silicone rubber,

a surface layer comprising a fluorine resin, and

an adhesive layer between the elastic layer and the surface layer,

wherein the adhesive layer contains a polyimide silicone, and

wherein when a peel test of the surface layer from the elastic layer is conducted after the member is left in the environment of 260° C. for 10 hours, the elastic layer undergoes a cohesive failure.

11. A member for electrophotography, comprising

a substrate,

an elastic layer comprising a silicone rubber,

a surface layer comprising a fluorine resin, and

an adhesive layer between the elastic layer and the surface layer,

wherein the adhesive layer contains a polyimide silicone,

wherein when a peel test of the surface layer from the elastic layer is conducted after the member is left in the environment of 260° C. for 10 hours, the elastic layer undergoes a cohesive failure, and

wherein the elastic layer contains titanium oxide in an anatase form.

12. A member for electrophotography, comprising

a substrate,

an elastic layer comprising a silicone rubber,

a surface layer comprising a fluorine resin, and

an adhesive layer between the elastic layer and the surface layer,

wherein the adhesive layer contains a polyimide silicone,

wherein when a peel test of the surface layer from the elastic layer is conducted after the member is left in the environment of 260° C. for 10 hours, the elastic layer undergoes a cohesive failure and

wherein the adhesive layer is a cured layer of a polyimide silicone having a vinyl group in a molecule thereof.