JP2014106482A5

JP2014106482A5 -

Info

Publication number: JP2014106482A5
Application number: JP2012261450A
Authority: JP
Filing date: 2012-11-29
Publication date: 2014-12-04
Anticipated expiration: 2032-11-29

Description

前述の課題を解決するために、本発明は、回転移動する無端状のベルトと、前記ベルトを張架する第１の張架部材と、前記ベルトを張架する第２の張架部材と、前記第２の張架部材に対して前記第１の張架部材を傾けることで前記ベルトの寄りを調整する寄り調整手段と、を有するベルト搬送装置において、前記寄り調整手段は、前記ベルトの移動方向と直交するベルト幅方向において前記第１の張架部材の一端側に設けられ、前記第１の張架部材の前記一端側の端部の位置を変化させる第１の調整部材と、前記ベルト幅方向において前記第１の張架部材の他端側に設けられ、前記第１の張架部材の前記他端側の端部の位置を変化させる第２の調整部材と、を備え、前記ベルトが一方向に寄った場合の前記第１の調整部材によって前記第１の張架部材の前記一端側の端部を移動させる方向は、前記第２の調整部材によって前記第１の張架部材の前記他端側の端部を移動させる方向と異なる方向であることを特徴とする。 In order to solve the above-described problems, the present invention provides an endless belt that rotates and moves, a first tension member that stretches the belt, a second tension member that stretches the belt, A belt adjustment device that adjusts a shift of the belt by tilting the first stretch member with respect to the second stretch member, wherein the shift adjustment unit is configured to move the belt. A first adjusting member that is provided on one end side of the first stretching member in a belt width direction orthogonal to the direction and changes a position of an end portion on the one end side of the first stretching member; and the belt A second adjustment member that is provided on the other end side of the first tension member in the width direction and changes the position of the end portion on the other end side of the first tension member; By the first adjusting member when the Direction to move the end portion of the one end of the rack member, and characterized in that the said second adjustment member is a direction different from the direction of moving the ends of the other end of the first tension member To do.

また、本発明の他の構成は、それぞれが異なる色のトナー像を担持する複数の像担持体と、回転移動する無端状であって、前記複数の像担持体から転写材へトナー像を転写するためのベルトと前記ベルトを張架する第１の張架部材と、前記ベルトを張架する第２の張架部材と、前記第２の張架部材に対して前記第１の張架部材を傾けることで前記ベルトの寄りを調整する寄り調整手段と、を有する画像形成装置において、前記寄り調整手段は、
前記ベルトの移動方向と直交するベルト幅方向において前記第１の張架部材の一端側に設けられ、前記第１の張架部材の前記一端側の端部の位置を変化させる第１の調整部材と、前記ベルト幅方向において前記第１の張架部材の他端側に設けられ、前記第１の張架部材の前記他端側の端部の位置を変化させる第２の調整部材と、を備え、前記ベルトが一方向に寄った場合の前記第１の調整部材によって前記第１の張架部材の前記一端側の端部を移動させる方向は、前記第２の調整部材によって前記第１の張架部材の前記他端側の端部を移動させる方向と異なる方向であることを特徴とする。 According to another aspect of the invention, a plurality of image carriers each carrying a toner image of a different color and an endless shape that rotates and transfer the toner image from the plurality of image carriers to a transfer material. A first tension member that stretches the belt, a second tension member that stretches the belt, and the first tension member with respect to the second tension member And an offset adjusting means for adjusting the offset of the belt by tilting the belt, the offset adjusting means includes:
A first adjusting member that is provided on one end side of the first stretching member in a belt width direction orthogonal to the moving direction of the belt and changes the position of the end portion on the one end side of the first stretching member. And a second adjustment member that is provided on the other end side of the first tension member in the belt width direction and changes the position of the end portion on the other end side of the first tension member. A direction in which the end of the one end side of the first tension member is moved by the first adjustment member when the belt is moved in one direction is determined by the second adjustment member. It is a direction different from the direction which moves the edge part of the said other end side of a tension member .

Claims

An endless belt that rotates,
A first tension member that stretches the belt;
A second tension member that stretches the belt;
In a belt conveyance device having a deviation adjusting means for adjusting a deviation of the belt by inclining the first tension member with respect to the second tension member ,
The offset adjusting means is
A first adjusting member that is provided on one end side of the first stretching member in a belt width direction orthogonal to the moving direction of the belt and changes the position of the end portion on the one end side of the first stretching member. And a second adjustment member that is provided on the other end side of the first tension member in the belt width direction and changes the position of the end portion on the other end side of the first tension member. A direction in which the end of the one end side of the first tension member is moved by the first adjustment member when the belt is moved in one direction is determined by the second adjustment member. A belt conveyance device characterized by being in a direction different from a direction in which an end portion of the other end side of the tension member is moved .

The belt conveyance device according to claim 1, wherein the second adjustment member moves in response to movement of the first adjustment member .

3. The belt conveyance according to claim 2 , wherein each of the first adjustment member and the second adjustment member has a cam curved surface and is rotatable with respect to an axis of the first tension member. apparatus.

The deviation adjusting means is configured such that when either the first adjusting member or the second adjusting member is rotated in the moving direction of the belt following the belt, the first adjusting member or the second adjusting member is moved. The belt conveyance device according to claim 3 , further comprising interlocking means for rotating one of the other adjustment members in the opposite direction .

5. The belt conveyance device according to claim 4 , wherein the interlocking unit connects the first adjustment member and the second adjustment member .

6. The belt conveyance device according to claim 5 , wherein the interlocking unit is capable of swinging about a swing shaft provided in a substantially central region in the belt width direction .

Said first, second adjustment member, it it includes an engaging portion that engages the interlocking means, said engagement portion, wherein, characterized in that disposed on the inner peripheral surface side of the belt Item 7. The belt conveying device according to Item 5 or 6 .

The belt, when closer to the one end side, according to any one of claims 1 to 7, characterized in that in contact with the first adjustment member in said one end of the belt ends Belt conveyor.

The belt includes ribs on both sides in the belt width direction on the inner peripheral surface, and the belt is moved toward the one end side, and the second adjustment member is formed by the rib on the other end side in the belt width direction. The belt conveying device according to any one of claims 1 to 7, wherein the belt conveying device is in contact with the belt.

The first tension member is a tension roller that applies tension to the belt by being biased by a biasing means;
A bearing support member that holds the shaft of the tension roller and the first or second adjustment member,
The belt conveyance device according to any one of claims 1 to 9, wherein the bearing support member is rotatable about a fulcrum.

The belt conveyance device according to claim 10, wherein the fulcrum of the bearing support member is disposed below a bisector of a winding angle of the belt with respect to the tension roller.

A first rubbing surface that rubs against the cam curved surface of the first adjustment member; and a second rubbing surface that rubs against the cam curved surface of the second adjustment member. The belt conveying device according to any one of claims 3 to 7, wherein the first rubbing surface and the second rubbing surface are provided at the same height.

A plurality of image carriers each carrying a toner image of a different color;
A belt for transferring a toner image from the plurality of image carriers to a transfer material, and a first stretching member for stretching the belt;
A second tension member that stretches the belt;
In an image forming apparatus, comprising: a deviation adjusting unit that adjusts a deviation of the belt by inclining the first tension member with respect to the second tension member.
The offset adjusting means is
A first adjusting member that is provided on one end side of the first stretching member in a belt width direction orthogonal to the moving direction of the belt and changes the position of the end portion on the one end side of the first stretching member. And a second adjustment member that is provided on the other end side of the first tension member in the belt width direction and changes the position of the end portion on the other end side of the first tension member. A direction in which the end of the one end side of the first tension member is moved by the first adjustment member when the belt is moved in one direction is determined by the second adjustment member. An image forming apparatus, characterized in that the direction is different from a direction in which the end of the other end side of the tension member is moved.

The image forming apparatus according to claim 13, wherein the second adjustment member moves in response to movement of the first adjustment member.

The image forming apparatus according to claim 14, wherein each of the first adjustment member and the second adjustment member has a cam curved surface and is rotatable with respect to an axis of the first stretching member. apparatus.

The deviation adjusting means is configured such that when either the first adjusting member or the second adjusting member is rotated in the moving direction of the belt following the belt, the first adjusting member or the second adjusting member is moved. 16. The image forming apparatus according to claim 15, further comprising interlocking means for rotating one of the other adjustment members in the opposite direction.

The image forming apparatus according to claim 16, wherein the interlocking unit connects the first adjustment member and the second adjustment member.

The image forming apparatus according to claim 17, wherein the interlocking unit is capable of swinging about a swing shaft provided in a substantially central region in the belt width direction.

The first and second adjustment members each include an engaging portion that engages with the interlocking means, and the engaging portion is disposed on the inner peripheral surface side of the belt. Item 19. The image forming apparatus according to Item 17 or 18.

20. The belt according to claim 13, wherein the belt contacts the first adjustment member at a belt end portion on the one end side when approaching the one end side. Image forming apparatus.

The belt includes ribs on both sides in the belt width direction on the inner peripheral surface, and the belt is moved toward the one end side, and the second adjustment member is formed by the rib on the other end side in the belt width direction. The image forming apparatus according to claim 13, wherein the image forming apparatus is in contact with the image forming apparatus.

The first tension member is a tension roller that applies tension to the belt by being biased by a biasing means;
A bearing support member that holds the shaft of the tension roller and the first or second adjustment member,
The image forming apparatus according to claim 13, wherein the bearing support member is rotatable about a fulcrum.

23. The image forming apparatus according to claim 22, wherein the fulcrum of the bearing support member is disposed below a bisector of a winding angle of the belt with respect to the tension roller.

A first rubbing surface that rubs against the cam curved surface of the first adjustment member; and a second rubbing surface that rubs against the cam curved surface of the second adjustment member. The image forming apparatus according to claim 15, wherein the first rubbing surface and the second rubbing surface are provided at the same height.