Developing apparatus, process cartridge, and interval guarantee member
AssigneeCanon Kabushiki Kaisha
InventorHiroki Ogino
Life of this patent
Estimating the term…
Abstract
A developing apparatus used in an image forming apparatus including a developer bearing member configured to develop a latent image formed on an image bearing member and rotate together with the image bearing member so that opposed surfaces thereof rotate in the same direction, an interval guarantee member configured to maintain a distance between the developer bearing member and the image bearing member by coming into abutment with the developer bearing member and the image bearing member, and a biasing member configured to bias the interval guarantee member toward the upstream side in the direction of rotation of the developer bearing member by applying an elastic force generated by elastic deformation on the interval guarantee member.
Claims20
A developing apparatus used in an image forming apparatus, comprising:
- a developer bearing member configured to develop a latent image formed on an image bearing member and rotate together with the image bearing member so that opposed surfaces thereof rotate in the same direction;
- an interval guarantee member configured to maintain a distance between the developer bearing member and the image bearing member by coming into abutment with the developer bearing member and the image bearing member, the interval guarantee member having:
- a first developer bearing member sliding contact portion that comes into sliding contact with the developer bearing member on an upstream side of a line connecting a center of rotation of the developer bearing member and a center of rotation of the image bearing member in the direction of rotation of the developer bearing member;
- and
- a first image bearing member sliding contact portion that comes into sliding contact with the image bearing member on the upstream side of the line in the direction of rotation of the image bearing member;
- and a biasing member configured to bias the interval guarantee member toward the upstream side in the direction of rotation of the developer bearing member by applying an elastic force generated by elastic deformation on the interval guarantee member.
A process cartridge configured to be detachable attachable to an apparatus body of an image forming apparatus, comprising:
- an image bearing member on which a latent image is formed;
- and
- a developing apparatus,
- the developing apparatus includes:
- a developer bearing member configured to bear developer for developing the latent image formed on the image bearing member and rotate together with the image bearing member so that opposed surfaces thereof rotate in the same direction;
- an interval guarantee member configured to maintain a distance between the developer bearing member and the image bearing member by coming into abutment with the developer bearing member and the image bearing member, the interval guarantee member having:
- a first developer bearing member sliding contact portion that comes into sliding contact with the developer bearing member on an upstream side of a line connecting a center of rotation of the developer bearing member and a center of rotation of the image bearing member in the direction of rotation;
- and
- a first image bearing member sliding contact portion that comes into sliding contact with the image bearing member on the upstream side of the line in the direction of rotation of the image
- bearing member;
- and
- a biasing member configured to bias the interval guarantee member toward the upstream side in the direction of rotation of the developer bearing member by applying an elastic force generated by elastic deformation on the interval guarantee member.
An interval guarantee member configured to maintain a distance between an image bearing member on which a latent image is formed and configured to rotate and a developer bearing member configured to rotate together with the image bearing member so that opposed surfaces thereof rotate in the same direction, comprising:
- a distance maintaining member configured to maintain the distance between the image bearing member and the developer bearing member by coming into abutment with the image bearing member and the developer bearing member;
- a first developer bearing member sliding contact portion that comes into sliding contact with the developer bearing member on an upstream side of the line connecting the center of rotation of the developer bearing member and the center of rotation of the image bearing member in the direction of rotation of the developer bearing member;
- an image bearing member sliding contact portion configured to come into sliding contact with the image bearing member on the upstream side of the line in the direction of rotation of the image;
- and
- a biasing member configured to bias the interval guarantee member toward the upstream side in the direction of rotation of the developer bearing member by applying an elastic force generated by elastic deformation on the interval guarantee member.
Dependencies are inferred from the claim text.