JP2011236033A5

JP2011236033A5 -

Info

Publication number: JP2011236033A5
Application number: JP2010110409A
Authority: JP
Filing date: 2010-05-12
Publication date: 2013-05-09

Description

本発明に係る用紙搬送装置では、付勢部材が、板ばねであることが好ましい。この場合、比較的簡単な構成で、第２のローラ軸を付勢することができる。
また、本発明に係る用紙搬送装置では、付勢部材が、先端部に、第２のローラ軸が挿通される孔状に形成された支持部を有しており、該支持部に挿通された第２のローラ軸を支持することが好ましい。
さらに、本発明に係る用紙搬送装置では、カバー部材が、内面に、第２のローラ軸を避けるための切り欠きが形成された複数のリブを有し、第２のローラ軸が、リブから独立していることが好ましい。 In the paper conveying apparatus according to the present invention, the biasing member is preferably a leaf spring. In this case, the second roller shaft can be biased with a relatively simple configuration.
Further, in the paper transport device according to the present invention, the urging member has a support portion formed in a hole shape through which the second roller shaft is inserted at the tip portion, and is inserted into the support portion. It is preferable to support the second roller shaft.
Furthermore, in the paper conveying apparatus according to the present invention, the cover member has a plurality of ribs in which notches for avoiding the second roller shaft are formed on the inner surface, and the second roller shaft is independent of the ribs. It is preferable.

駆動ローラ２７の周囲には、２つの従動ローラ２９，３１が配置され、駆動ローラ２７外周の湾曲した搬送路に沿って、駆動ローラ２７下側の読取位置１９まで原稿が搬送される。原稿は、読取位置１９の下側に配置された読取装置３３によって読み取られ、排出ローラ対３５によって原稿排出トレイ２１へ排出される。コピー処理を行う際には、読取装置３３によって読み取られた原稿データが、画像形成部１３によって用紙にプリントされる。 Around the driving roller 27, two driven rollers 29, 31 are disposed, I along the conveying path curved in the drive roller 27 outer periphery, the original is conveyed to the drive roller 27 below the reading position 19. The original is read by the reading device 33 disposed below the reading position 19 and discharged to the original discharge tray 21 by the discharge roller pair 35. When performing the copying process, the document data read by the reading device 33 is printed on a sheet by the image forming unit 13.

ところで、開閉カバー５のリブ５０６に長孔を形成して、この長孔に従動ローラ軸９５２を挿通し、付勢部材で従動ローラ軸９５２を駆動ローラ軸９５１側に付勢することとも考えられる。しかしながら、この場合、何らかの原因で開閉カバー５が大きく外側に反った場合、長孔が外側にずれて、長孔に挿通された従動ローラ軸９５２も外側に追従する。これにより、駆動ローラ６と従動ローラ７とのニップ力が低下してしまう。 By the way, it is conceivable that a long hole is formed in the rib 506 of the opening / closing cover 5, the driven roller shaft 952 is inserted through the long hole, and the driven roller shaft 952 is urged toward the driving roller shaft 951 by a biasing member. . However, in this case, when the cover 5 is counter-Tsu greatly outward for some reason, the long hole is displaced outward, the driven roller shaft 952 inserted through the long holes also follow the outer. As a result, the nip force between the driving roller 6 and the driven roller 7 is reduced.

Claims

A first transport roller and a second transport roller facing the first transport roller, and a pair of transport rollers for transporting paper;
A first roller shaft inserted through the first transport roller;
A second roller shaft inserted through the second transport roller;
A biasing member that biases the second roller shaft toward the first roller shaft;
An openable / closable cover member having the biasing member attached to the inner surface;
With
The biasing member supports the second roller shaft and biases the second roller shaft toward the first roller shaft in a state where the cover member is closed. apparatus.

The cover member is formed in a substantially rectangular shape, and has a base end portion serving as a rotation axis at the time of opening and closing,
The base end portion of the biasing member is attached to the base end portion side of the cover member,
The tip of the biasing member is positioned on the tip of the cover member to support the second roller shaft, and biases the second roller shaft toward the first roller shaft. The sheet conveying apparatus according to claim 1.

The paper conveying apparatus according to claim 1, wherein the biasing member is a leaf spring.

The sheet conveying device according to any one of claims 1 to 3,
A storage section for storing paper,
The paper feeding device, wherein the paper transporting device transports a paper from the storage unit.

A paper feeding unit according to claim 4,
An image forming unit that forms an image on paper,
The image forming apparatus, wherein the sheet feeding unit conveys a sheet from the storage unit toward the image forming unit.

The biasing member has a support portion formed in a hole shape through which the second roller shaft is inserted at a tip portion, and supports the second roller shaft inserted through the support portion. The paper conveyance device according to claim 1, wherein the paper conveyance device is a paper conveyance device.

The cover member has a plurality of ribs formed on the inner surface with notches for avoiding the second roller shaft,
The sheet conveying apparatus according to claim 6, wherein the second roller shaft is independent of the rib.