Cleaning device and image forming apparatus using the same
AssigneeCanon Kabushiki Kaisha
InventorHisataka Hisakuni
Life of this patent
Estimating the term…
Abstract
In a cleaning device having a cleaning blade which is abutted against an image bearing member that bears an image and cleans the surface of the image bearing member, the cleaning blade includes at least a first rubber layer which is abutted against the image bearing member; and a second rubber layer that supports the first rubber layer; wherein the tanδ peak temperature obtained by a dynamic viscoelasticity test of the first rubber layer is a value close to the surface temperature of the image bearing member; and wherein the tan δ peak temperature obtained by a dynamic viscoelasticity test of the second rubber layer is lower than the tanδ peak temperature of the first rubber layer.
Claims27
A cleaning device comprising:
- a cleaning blade, which is abutted against an image bearing member, which bears an image, said cleaning blade cleaning a surface of the image bearing member,
- said cleaning blade including at least a first rubber layer, which is abutted against the image bearing member, and a second rubber layer, which supports said first rubber layer,
- wherein a tanδ peak temperature obtained by a dynamic viscoelasticity test of said first rubber layer is a value close to a surface temperature of said image bearing member, and
- a tanδ peak temperature obtained by a dynamic viscoelasticity test of said second rubber layer is lower than the tanδ peak temperature of said first rubber layer.
An image forming apparatus comprising:
- an image bearing member that bears an image;
- image forming means for forming an image on said image bearing member;
- transfer means for transferring the image from said image bearing member to a transfer material;
- and
- cleaning means including a cleaning blade, which that is abutted against a surface of said image bearing member for cleaning, said cleaning blade including at least a first rubber layer, which is abutted against said image bearing member, and a second rubber layer, which supports said first rubber layer,
- wherein a tanδ peak temperature obtained by a dynamic viscoelasticity test of said first rubber layer is a value close to a surface temperature of said image bearing member, and
- a tanδ peak temperature obtained by a dynamic viscoelasticity test of said second rubber layer is lower than the tan8 peak temperature of said first rubber layer.
A cleaning blade to be abutted against an image bearing member for bearing an image on a clean surface of the image bearing member, said cleaning blade comprising:
- a first rubber layer to be disposed on a side of said cleaning blade to be abutted against the image bearing member, wherein a tanδ peak temperature obtained by a dynamic viscoelasticity test of said first rubber layer is a value close to a surface temperature of said image bearing member;
- and
- a second rubber layer that supports said first rubber layer,
- wherein a tanδ peak temperature obtained by a dynamic visceolasticity test of said second rubber layer is lower than the tanδ peak temperature of said first rubber layer.
Dependencies are inferred from the claim text.