Rotatory member for fixing and fixing device having the rotatory member
AssigneeCanon Kabushiki Kaisha
InventorTakeshi Menjo
Life of this patent
Estimating the term…
Abstract
A rotatory member for fixing toner image onto a support member supporting toner image includes a core member, a first rubber layer provided on the core member, a second rubber layer provided on the first rubber layer, and a third rubber layer provided as the surface layer on the second rubber layer. Here, by making the third rubber layer, the second rubber layer and the first rubber layer to have their elongations larger in the order mentioned, peeling between the respective layers is prevented so as to withstand prolonged usage.
Claims16
A rotatory member for fixing a toner image onto a support material supporting the toner image comprising:
- a first rubber layer comprised of a first rubber;
- a second rubber layer comprised of a second rubber and provided on said first rubber layer;
- and
- a third rubber layer comprised of a third rubber and provided on said second rubber layer as a surface layer,
- wherein elongation of said third rubber layer is larger than elongation of said second rubber layer and elongation of said second rubber layer is larger than elongation of said first rubber layer.
A fixing device for fixing a toner image onto a support material supporting the toner image comprising:
- a pair of rotatory members for conveying said support material sandwiched therebetween, at least one of the pair of rotatory members having a first rubber layer comprised of a first rubber, a second rubber layer comprised of a second rubber and provided on the first rubber layer;
- a third rubber layer comprised of a third rubber and provided on the second rubber layer as a surface layer, elongation of said third rubber layer being larger than elongation of said second rubber layer and elongation of said second rubber layer being larger than elongation of said first rubber layer;
- and
- means fur supplying a release agent to at least one of said pair of rotatory members.
Dependencies are inferred from the claim text.