Interval guarantee member, developing apparatus, process cartridge

摘要

An interval guarantee member including: a first image bearing member side sliding portion in sliding-contact with the image bearing member; a first developing side sliding portion in sliding-contact with the developer bearing member; a second image bearing member side sliding contact portion in sliding-contact with the image bearing member; and a second developing side sliding contact portion in sliding-contact with the developer bearing member, wherein the distance between the first image bearing member side sliding contact portion and the first developing side sliding contact portion is longer than that between the second image bearing member side sliding contact portion and the second developing side sliding contact portion, and the first image bearing member side sliding contact portion and the first developer side sliding contact portion come into contact with the image bearing member and the developer bearing member.

主权项

1. An interval guarantee member configured to maintain a distance between an image bearing member on which a latent image is formed and a developer bearing member configured to bear a developer, comprising:
a first image bearing member side sliding portion configured to come into sliding contact with the image bearing member on an upstream side of a line connecting a center of the image bearing member and a center of the developer bearing member in the direction of rotation of the image bearing member when the image bearing member and the developer bearing member rotate so that surfaces oppose to each other thereof move in the same direction; a first developing side sliding portion configured to come into sliding contact with the developer bearing member on an upstream side of a line connecting a center of the image bearing member and a center of the developer bearing member in the direction of rotation of the developer bearing member when the image bearing member and the developer bearing member rotate so that surfaces oppose to each other thereof move in the same direction; a second image bearing member side sliding contact portion configured to come into sliding contact with the image bearing member on an downstream side of the first image bearing member side sliding portion in the direction of rotation of the image bearing member; and a second developing side sliding contact portion configured to come into sliding contact with the developer bearing member on an downstream side of the first developing side sliding contact portion in the direction of rotation of the developer bearing member, wherein a distance between the first image bearing member side sliding contact portion and the first developing side sliding contact portion is longer than a distance between the second image bearing member side sliding contact portion and the second developing side sliding contact portion, and the first image bearing member side sliding contact portion and the first developer side sliding contact portion come into contact with the image bearing member and the developer bearing member respectively, whereby the interval guarantee member is prevented from moving in the direction of rotation of the image bearing member and the developer bearing member.