IMAGE FORMING APPARATUS

Abstract

An image forming apparatus includes: an image bearing member which is rotated while bearing a toner image; an intermediate transfer belt onto which the toner image is primary-transferred from the image bearing member and which secondary-transfers the toner image onto a recording material; an image bearing member cleaning member which removes the toner from the image bearing member and in which a length of the image bearing member in a rotational axial direction is shorter than the image bearing member; and a bending member which is come into contact with a surface of the intermediate transfer belt onto which the toner image is primary-transferred and which bends the intermediate transfer belt, wherein, in the rotational axial direction of the image bearing member, assuming that a length of the image bearing member cleaning member is set to Ldrcln, a length of the intermediate transfer belt is set to Lb, and a length of the bending member is set to Lr, there is a relation of Lb>Ldrcln>Lr.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram illustrating relations among widths of members of an image forming apparatus of the first embodiment.

FIG. 2 is a schematic constructional diagram of the image forming apparatus of the first embodiment.

FIG. 3 is a schematic constructional diagram of a processing unit of the image forming apparatus of the first embodiment.

FIG. 4 is a diagram illustrating a relation between the widths of the members of the image forming apparatus.

FIG. 5 is a diagram illustrating a construction of deviation regulation of an intermediate transfer belt in the first embodiment.

FIG. 6 is a diagram illustrating an inclination of the intermediate transfer belt in an edge portion of a bending member in an intermediate transfer unit of the image forming apparatus of the first embodiment.

FIG. 7 is a diagram illustrating relations among widths of members of an image forming apparatus of Comparison.

FIG. 8 is a diagram illustrating an inclination of an intermediate transfer belt in an edge portion of a bending member in an intermediate transfer unit of a conventional image forming apparatus.

Claims

1. An image forming apparatus comprising: an image bearing member which is rotated while bearing a toner image;an intermediate transfer belt onto which the toner image is primary-transferred from the image bearing member and from which the toner image is secondary-transferred onto a recording material;an image bearing member cleaning member which removes the toner from the image bearing member and whose length in a rotational axial direction of the image bearing member is shorter than the image bearing member; anda bending member which comes into contact with a surface of the intermediate transfer belt onto which the toner image is primary-transferred and which bends the intermediate transfer belt,wherein, in the rotational axial direction of the image bearing member, assuming that a length of the image bearing member cleaning member is set to Ldrcln, a length of the intermediate transfer belt is set to Lb, and a length of the bending member is set to Lr, there is a relation of Lb>Ldrcln>Lr.

2. An apparatus according to claim 1, wherein assuming that a length in a width direction of the maximum image which is transferred onto the intermediate transfer belt is set to Li, there is a relation of Lr>Li.

3. An apparatus according to claim 2, further comprising an intermediate transfer belt cleaning member which removes the toner on the intermediate transfer belt, and wherein assuming that a length of the intermediate transfer belt cleaning member is set to Lbcln, there is a relation of Lr>Lbcln.

4. An image forming apparatus comprising: an image bearing member which is rotated while bearing a toner image;an intermediate transfer belt onto which the toner image is primary-transferred from the image bearing member and from which the toner image is secondary-transferred onto a recording material;an image bearing member cleaning member which removes the toner from the image bearing member and whose edge portion is located on an inner side of an edge portion of the image bearing member in a rotational axial direction of the image bearing member; anda bending member which come s into contact with a surface of the intermediate transfer belt onto which the toner image is primary-transferred and which bends the intermediate transfer bent,wherein in the rotational axial direction of the image bearing member,an edge portion of the bending member is located on an inner side of the image bearing member cleaning member and an edge portion of the image bearing member cleaning member is located on an inner side of an edge portion of the intermediate transfer belt.

5. An apparatus according to claim 4, wherein an edge portion of the maximum image which is transferred onto the intermediate transfer belt is located on an inner side of the edge portion of the bending member.

6. An apparatus according to claim 5, further comprising an intermediate transfer belt cleaning member which removes the toner on the intermediate transfer belt, and wherein an edge portion of the intermediate transfer belt cleaning member is located on an inner side of the edge portion of the bending member.