JP2015176042A5

JP2015176042A5 -

Info

Publication number: JP2015176042A5
Application number: JP2014053522A
Authority: JP
Filing date: 2014-03-17
Publication date: 2017-01-12
Anticipated expiration: 2034-03-17

Description

（態様Ｄ）
（態様Ａ）〜（態様Ｃ）において、二次転写ローラ６２又は分離ローラ６３とに巻き付いている二次転写ベルト６１の走行方向における巻き付け領域の両側から二次転写ローラ６２又は分離ローラ６３の半径の長さだけ離れた箇所までの当接領域で、二次転写ベルト６１に当接するように、クリーニングブレード８１や入口シール部材８２の固定位置を設定した。これによれば、上記実施形態について説明したように、二次転写ローラ６２及び分離ローラ６３の２つの回転体で無端状の二次転写ベルト６１を張架して無端移動させるベルト装置を用いて、二次転写ベルト６１の表面の変化を観察した。この結果、上記当接領域では、二次転写ベルト６１の表面の変化はみられなかった。クリーニングブレード８１や入口シール部材８２を、上記当接領域内の二次転写ベルト６１に当接するように設ける。この結果、二次転写ベルト６１の表面とクリーニングブレード８１や入口シール部材８２の先端部との間の隙間の発生、やクリーニングブレード８１や入口シール部材８２のベルト側先端の不要な摩耗を抑制できる。これにより、当接部材のベルト部材の表面に当接している状態が保たれる。
できる。 (Aspect D)
(Embodiment A) ~ (embodiment C) in the secondary transfer roller 62 or the separation roller 63 and the secondary transfer from both sides of the winding can with regions in the running direction of which the secondary transfer belt 61 wound around the roller 62 or the separation roller 63 The fixing positions of the cleaning blade 81 and the inlet seal member 82 are set so as to contact the secondary transfer belt 61 in the contact region up to the place separated by the length of the radius of the contact. According to this, as described in the above embodiment, the belt device is used that stretches the endless secondary transfer belt 61 by the two rotating bodies of the secondary transfer roller 62 and the separation roller 63 and moves the endless endlessly. The change in the surface of the secondary transfer belt 61 was observed. As a result, no change in the surface of the secondary transfer belt 61 was observed in the contact area. A cleaning blade 81 and an inlet seal member 82 are provided so as to contact the secondary transfer belt 61 in the contact area. As a result, generation of a gap between the surface of the secondary transfer belt 61 and the tip of the cleaning blade 81 or the inlet seal member 82 and unnecessary wear on the belt side tip of the cleaning blade 81 or the inlet seal member 82 can be suppressed. . Thereby, the state which contact | abutted on the surface of the belt member of a contact member is maintained.
it can.

Claims

An endless belt member that runs while being stretched around a plurality of support rotating bodies, and at least one of one end side and the other end side of at least one rotating shaft of the plurality of support rotating bodies is displaced and tilted. A tilting rotator that corrects a belt shift in which the belt member moves in the belt width direction, and at least one of the upstream and downstream support rotators in the running direction of the belt member with respect to the tilting rotator and the tilting rotation In a belt device comprising a contact member fixed to the apparatus main body side that contacts the surface of the belt member between the body and the body,
The belt device, wherein the contact member is fixed at a position where the contact member can maintain a contact state with the surface of the belt member in a tilting range of the tilt rotating body.

The belt device according to claim 1, wherein
The belt member is present with respect to the surface position taken by the surface of the belt member on the assumption that the contact member does not exist in a cross section orthogonal to the rotation axis of the support rotating body that does not tilt among the plurality of supporting rotating bodies. The amount of biting of the abutting member, which is the amount by which the belt-side tip of the abutting member protrudes to the back side of the belt in a state assumed not to be, is 1 [mm] or more within the tilting range of the tilting rotating body. Thus, the belt device characterized in that the fixed position of the contact member is set.

The belt device according to claim 1 or 2,
The belt device according to claim 1, wherein a fixed position of the contact member is set so that a biting amount of the contact member is 2 [mm] or less within a tilting range of the tilting rotating body.

The belt device according to any one of claims 1 to 3,
Locations separated from both sides of the winding region in the running direction of the belt member wound around the tilting rotating body or the supporting rotating body by the length of the radius of the tilting rotating body or the supporting rotating body where the winding region is formed The belt device is characterized in that a fixed position of the contact member is set so as to contact the belt member in the contact region up to.

In an image forming apparatus that forms an image on the sheet material using a belt device including an endless belt member that carries an image or a sheet material on which an image is recorded on an outer peripheral surface.
An image forming apparatus using the belt device according to claim 1 as the belt device.

The image forming apparatus according to claim 5.
Primary transfer means for primarily transferring an image formed on the latent image carrier to an intermediate transfer member;
Secondary transfer means for secondary transfer of the image primarily transferred onto the intermediate transfer member to the sheet material;
The image forming apparatus, wherein the secondary transfer unit secondarily transfers an image on the intermediate transfer member onto a sheet material carried on an outer peripheral surface of the belt member.