JPH03216453A - Sheet paper conveyer - Google Patents
Sheet paper conveyerInfo
- Publication number
- JPH03216453A JPH03216453A JP2010397A JP1039790A JPH03216453A JP H03216453 A JPH03216453 A JP H03216453A JP 2010397 A JP2010397 A JP 2010397A JP 1039790 A JP1039790 A JP 1039790A JP H03216453 A JPH03216453 A JP H03216453A
- Authority
- JP
- Japan
- Prior art keywords
- sheet paper
- sheet
- conveying
- opening
- central shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
ＣＩ要〕
像形成装置のシート紙を搬送する装置に関し、ジャムの
発生を防止可能とすることを目的とし、周囲に複数の孔
を有し、シート紙を搬送する方向に回転される０−ラと
、該ローラを回転可能に支持し、上記シート紙が搬送さ
れる面倒に開口を有する中空固定中心軸と、該中空固定
中心軸と連通された負圧源とよりなり、上記Ｏ−ラが目
転することにより、この周囲の孔が次々に上記開口と運
通し、該達通した孔が吸引作用を行い、上記シート紙を
吸着して搬送するシート紙搬送装置において、上記中空
固定中心軸の開口を、該中空固定中心軸の中心を通り上
記シート紙搬送面に垂直な面に対してシート紙搬送方向
に偏倚して設けてなり、シート紙搬送面に対して斜め下
方向の向きにシート紙搬送力を付与するよう構成する。[Detailed Description of the Invention] Required for CI] Regarding a device for conveying sheet paper of an image forming apparatus, the purpose is to prevent jamming from occurring, and the device has a plurality of holes around the periphery, and has a plurality of holes in the direction in which the sheet paper is conveyed. a hollow fixed central shaft rotatably supporting the roller and having an opening through which the sheet paper is conveyed; and a negative pressure source communicating with the hollow fixed central shaft. As the O-ra rotates, the surrounding holes communicate with the opening one after another, and the communicated holes perform a suction action, thereby attracting and conveying the sheet paper. , the opening of the hollow fixed central shaft is biased in the sheet paper conveying direction with respect to a plane passing through the center of the hollow fixed central axis and perpendicular to the sheet paper conveying surface, and The sheet paper conveying force is applied in a diagonally downward direction.
本発明は像形成装置のシート紙を搬送する装置に関する
。The present invention relates to a device for conveying sheet paper in an image forming apparatus.
第５図は、用紙としてシート紙１が使われ、定着器とし
て閃光定着器２が採用されている像形成装Ｎ３を示す。FIG. 5 shows an image forming apparatus N3 in which a sheet paper 1 is used as the paper and a flash fixing device 2 is employed as the fixing device.
４は感光ドラムであり、この周囲に、クリーナ５，前帯
電器６．露光器７，現像器８．転写器９等が配設してあ
る。4 is a photosensitive drum, around which are a cleaner 5, a pre-charger 6. Exposure device 7, developer device 8. A transfer device 9 and the like are provided.
感光ドラム４が矢印八方向に回転されて最初に潜像、次
いでトナー像が形成される。またシート紙１が給紙部（
図示せず）から矢印Ｂ方向に供給され、転写器９により
トナー像が定着される。The photosensitive drum 4 is rotated in eight directions indicated by arrows, and first a latent image and then a toner image are formed. Also, sheet paper 1 is in the paper feed section (
(not shown) in the direction of arrow B, and the toner image is fixed by the transfer device 9.
その後、シート紙１は、閃光定着器２の下側にこれと近
接対向して配設されているシート紙搬送装ＷＩ１０によ
り定着器２の下側を矢印Ｃ方向に搬送され、この過程で
、定着器２の閃光ランブ１１により閃光定着される。１
２はシート紙が搬送される面を示す。Thereafter, the sheet paper 1 is transported under the fuser 2 in the direction of arrow C by the sheet paper transport device WI10 disposed close to and opposite to the flash fuser 2, and in this process, Flash fixation is performed by the flash lamp 11 of the fixing device 2. 1
2 indicates the surface on which the sheet paper is conveyed.
次いで、シート紙１は、排出口−ラ１３によりスタッカ
部（図示せず）へ排出される。Next, the sheet paper 1 is discharged to a stacker section (not shown) through the discharge port 13.
閃光定着器２とシート紙搬送装置１０との間のｌｌＩ間
ｑは、一般に狭い。The lllI distance q between the flash fixing device 2 and the sheet paper conveying device 10 is generally narrow.
一方、定着器２の下面には小なる段部１４が存在するこ
とがある。第５図においては、板金の折り曲げ部１５等
により、排出０−ラ１３側寄りに形成されている。On the other hand, a small stepped portion 14 may exist on the lower surface of the fixing device 2 . In FIG. 5, it is formed closer to the discharge 0-ra 13 side by a bent portion 15 of a sheet metal.
このため、シート紙１は搬送方向上先頭側の端が上記段
部１４に引っ掛かってジャムを起こすことがある。For this reason, the top end of the sheet paper 1 in the conveyance direction may get caught in the stepped portion 14, causing a jam.
段部１４が優かの大きさであっても、シート紙は引っ掛
かりを起こす。従って、定着器２の下面をシート紙が引
っ掛かりを起こさない程度にまで平面とすることは困難
である。Even if the stepped portion 14 is of a small size, the sheet paper will get caught. Therefore, it is difficult to make the lower surface of the fixing device 2 flat to the extent that sheet paper does not get caught.
そこで、シート紙搬送装置１０を、シート紙１をジャム
を起こさないように搬送し得る構成とする必要がある。Therefore, the sheet paper conveying device 10 needs to be configured to be able to convey the sheet paper 1 without jamming it.
また、近年、像形成装置の動作が高速化しつつあり、シ
ート紙の搬送速度も高速化されつつある。Furthermore, in recent years, the operation speed of image forming apparatuses has been increasing, and the conveyance speed of sheet paper has also been increasing.
シート紙の搬送が高速化すると、それだけ搬送中のシー
ト紙の状態が不安定となり易く、ジャムを起こし易くな
る。As the sheet paper is transported at a faster speed, the state of the sheet paper being transported is more likely to become unstable, and jams are more likely to occur.
この点からも、シート紙搬送装１１１０をより信頼性の
高いものに改良する必要がある。Also from this point of view, it is necessary to improve the sheet paper conveying device 1110 to be more reliable.
（従来の技術〕
第６図は、従来のシート紙搬送装Ｉｌ１２０を、閃光定
着器２と併せて示す。(Prior Art) FIG. 6 shows a conventional sheet paper conveying device Il 120 together with a flash fixing device 2. As shown in FIG.
２１．２２．２３は夫々第１，第２，第３のシート紙搬
送０−ラ組立体であり、シート紙搬送方向に、下流側よ
り並設してある。Reference numerals 21, 22, and 23 denote first, second, and third sheet paper conveyance O-ra assemblies, respectively, which are arranged in parallel from the downstream side in the sheet paper conveyance direction.
各シート紙搬送０−ラ組立体２１．２２．２３は、夫々
中空の固定中心軸２ １ −１． ２ ２−１．２３−
１に、ローラ２１−２．２２−２．２３−２が回転可能
に嵌合された構造である。Each sheet paper transport assembly 21, 22, 23 has a hollow fixed central shaft 21-1. 2 2-1.23-
1, rollers 21-2, 22-2, 23-2 are rotatably fitted.
各日ーラ２２−２．２３−２．２３−２には、全周に亘
って複数の孔２１−２８，２２〜２ａ ， ２３−２ａ
が形成してある。Each day rack 22-2.23-2.23-2 has a plurality of holes 21-28, 22-2a, 23-2a over the entire circumference.
is formed.
また、中空固定中心軸２１−１．２２−１．２３−１に
は、一の開口２ １ −１ａ ， ２２−１ａ ， ２
３−１ａが形成してある。Further, the hollow fixed central shaft 21-1.22-1.23-1 has one opening 21-1a, 22-1a, 2
3-1a is formed.
各中空固定軸２１−１．２２−１．２３−１は負圧源２
４と接続してある。Each hollow fixed shaft 21-1.22-1.23-1 is a negative pressure source 2
It is connected to 4.
ローラ２ １ −２． ２ ２−２． ２ ３−２は矢
印Ｄで示すように反時計方向に回転され、複数の孔２
１−２ａ ，２２−２ａ ．２３−２ａのうち開口２
１ −１ａ ，２ ２−１ａ ， ２３−１ａと順次対
向する孔が吸引作用をしてシート紙を吸着すると共にロ
ーラ２１−２〜２３−２の回転力により矢印Ｃ方向に搬
送力を付与する。Roller 2 1-2. 2 2-2. 2 3-2 is rotated counterclockwise as shown by arrow D, and a plurality of holes 2
1-2a, 22-2a. Opening 2 of 23-2a
The holes facing 1-1a, 22-1a, and 23-1a in sequence act as a suction to attract the sheet paper, and apply a conveyance force in the direction of arrow C by the rotational force of the rollers 21-2 to 23-2. .
シート紙１は、各シート紙殼送ローラ組立体２１．２２
．２３の部位で吸着、されつつ搬送される。The sheet paper 1 is transported by each sheet paper transport roller assembly 21.22.
．． It is transported while being adsorbed at 23 sites.
ここで、開口２１−１ａ ，２２−１ａ ，２３−１ａ
は、ローラ組立体２１，２２．２３の中心を通り、シー
ト紙搬送而１２に対して垂直な面２５，２６．２７に対
して、シート紙搬送方向とは逆方向に角度α（−１０゜
）偏倚した部位に形成してある。Here, openings 21-1a, 22-1a, 23-1a
passes through the center of the roller assembly 21, 22.23 and is at an angle α (-10°) with respect to the plane 25, 26.27 perpendicular to the sheet transport 12 in the direction opposite to the sheet transport direction. ) It is formed in a deviated area.
搬送されてきたシート紙を出来るだけ早く吸着するため
である。This is to absorb the conveyed sheet paper as quickly as possible.
第７図に拡大して示すように、複数の孔２ ３−２ａの
各孔は、０−ラ組立体２３の頂部に到る手前側の位置よ
り頂部に到る間に吸引作用を行い、シート紙７は矢印で
示すようにシート紙搬送面１２に対して角度α斜上方を
向く搬送力Ｆ１を付与される。As shown in an enlarged view in FIG. 7, each hole of the plurality of holes 2 3-2a performs a suction action from a position on the near side reaching the top of the O-ra assembly 23 to the top. The sheet paper 7 is applied with a conveyance force F1 directed diagonally upward at an angle α with respect to the sheet paper conveyance surface 12, as indicated by an arrow.
このため、第６図に示すように、シート紙１がシート紙
搬送而１２から浮き上がり、この先端が定着器２の下面
の段部１４に引っ掛がってジャムを起こすことがある。For this reason, as shown in FIG. 6, the sheet paper 1 may float up from the sheet paper transporter 12, and its leading edge may get caught on the stepped portion 14 on the lower surface of the fixing device 2, causing a jam.
また、シート紙１が第８図に示すように上面が凹となる
ようにカールしていることがある。２９はカールした部
分である。また、定着の過程で、シート紙１は上面を加
熱され、上面側を乾燥されて、上面が凹となるようにカ
ールする傾向がある。Further, the sheet paper 1 may be curled so that the upper surface thereof becomes concave as shown in FIG. 29 is a curled part. Further, during the fixing process, the upper surface of the sheet paper 1 is heated and the upper surface side is dried, so that the sheet paper 1 tends to curl so that the upper surface becomes concave.
このようにカールしたシート紙１においては、上記のジ
ャムは更に発生し易くなる。In the sheet paper 1 curled in this way, the above-mentioned jam is more likely to occur.
本発明はジャムの発生を防止可能としたシート紙搬送装
置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet paper conveying device that can prevent jamming.
第１図は本発明のシート紙搬送装置３０の原珊構成を示
す。FIG. 1 shows the basic structure of a sheet paper conveying device 30 of the present invention.
３１はローラであり、全周に口って複数の孔３２を有し
、中空固定中心軸３３に回転可能に設けてあり、シート
紙１と接触する部分３４が矢印Ｃで示すシート紙搬送方
向に移動するように矢印Ｇ方向に回転される。31 is a roller, which has a plurality of holes 32 around the entire circumference, is rotatably provided on a hollow fixed central shaft 33, and a portion 34 that contacts the sheet paper 1 is in the sheet paper conveying direction shown by arrow C. It is rotated in the direction of arrow G so that it moves.
３５は負圧源であり、中空固定中心軸３３と運通して設
けてある。35 is a negative pressure source, which is provided in communication with the hollow fixed central shaft 33.
３６は開口であり、中空固定中心軸３３の局面のうち、
中空固定φ心軸３３の中心３７を通りシート紙搬送面１
２と垂直をなす面３８に対して、シート紙搬送方向Ｃ（
０−ラ３１の回転方向Ｇ）に所定角度β偏倚して形成し
てある。36 is an opening, and among the aspects of the hollow fixed central shaft 33,
The sheet paper conveyance surface 1 passes through the center 37 of the hollow fixed φ center shaft 33
2 and the sheet paper conveyance direction C (
It is formed to be offset by a predetermined angle β in the rotational direction G) of the 0-ra 31.
〔作用）
各孔３２は、開口３６と対向する回転区間内で、負圧１
３５により、中空固定中心軸３３，開口３６を介してシ
ート紙１を吸着し、同時にローラ３１の回転により矢印
Ｆ２で示す搬送カを付与する。[Function] Each hole 32 has a negative pressure of 1 within the rotating section facing the opening 36.
35, the sheet paper 1 is attracted through the hollow fixed central shaft 33 and the opening 36, and at the same time, the rotation of the roller 31 applies a conveyance force as indicated by the arrow F2.
ここで、開口３６は面３８に対してシ一トＮＪｌｌ送方
向Ｃに角度β偏倚しているため、シート紙１への搬送力
は、シート搬送面１２に対して斜め下方向に角度β傾斜
した方向に付与される。Here, since the opening 36 is biased at an angle β in the sheet conveyance direction C with respect to the surface 38, the conveyance force to the sheet paper 1 is tilted diagonally downward at an angle β with respect to the sheet conveyance surface 12. It is given in the direction of
このため、第８図に示すように、シート紙１の搬送方向
上先端１ａ側が上方にカールしている場合でも、シート
紙１がロー５３１により送り出されたときに、先＠ｌａ
側の高さはシート紙搬送面］２より下方に保たれ、シー
ト紙搬送而１２より上方への浮き上りは起きない。Therefore, as shown in FIG. 8, even if the upper end 1a side of the sheet paper 1 in the conveyance direction is curled upward, when the sheet paper 1 is fed out by the row 531, the tip @la
The height of the side is maintained below the sheet paper conveying surface 2, and lifting upward from the sheet paper conveying surface 12 does not occur.
従って、シート紙１の先端１ａが定着器２の下面の段部
１４に引っ掛かることが無く、然してジャムが起きない
。Therefore, the leading edge 1a of the sheet paper 1 will not get caught on the stepped portion 14 on the lower surface of the fixing device 2, and no jam will occur.
第２図及び第３図は夫々本発明のシート紙搬送装置５０
の一実施例を示す。FIGS. 2 and 3 show a sheet paper conveying device 50 of the present invention, respectively.
An example is shown below.
５１は第１のシート紙搬送ローラ組立体、５２は第２の
シート紙搬送０−ラ組立体、５３は第３のシート紙搬送
口ーラ組立体であり、シート紙搬送方向に等間隔で並ん
で配されている。51 is a first sheet paper conveyance roller assembly, 52 is a second sheet paper conveyance roller assembly, and 53 is a third sheet paper conveyance roller assembly, which are arranged at equal intervals in the sheet paper conveyance direction. They are arranged side by side.
各シート紙ローラ組立体５１．５２．５３は、中空囚定
中心軸５１−１．５２−１．５３−１に、〇一ラ５ １
−２． ５ ２−２． ５３−２が回転可能に嵌合し
て設けられた構造であり、各０−ラ５ １ −２． ５
２−２．５３−２はベルト駆動されて共に反時計方向
に回転される。Each sheet paper roller assembly 51, 52, 53 has a hollow confining central shaft 51-1.52-1.53-1.
-2. 5 2-2. 53-2 are rotatably fitted together, and each 0-ra 5 1-2. 5
2-2 and 53-2 are belt driven and rotated together counterclockwise.
各０−ラ５ １ −２． ５ ２−２． ５３−２には
、全周に亘って複数の孔５１−２ａ ，５２−２ａ ，
５３−２ａが形成してある。Each 0-ra 5 1-2. 5 2-2. 53-2 has a plurality of holes 51-2a, 52-2a,
53-2a is formed.
各中空固定中心軸５ １ −１． ５ ２−１． ５
３−１には、開口５１−１ａ ．５２−１ａ ，５３−
１ａが形成してある。Each hollow fixed central shaft 5 1 -1. 5 2-1. 5
3-1 has an opening 51-1a. 52-1a, 53-
1a is formed.
ｎ口５ １−１ａは、中空固定中心軸５１−１の中心５
１−１ｂを通りシート紙搬送面１２に対して垂直な面
５４に対して時計方向に角度θ（１０度）偏倚して形成
してある。The n-port 5 1-1a is the center 5 of the hollow fixed central shaft 51-1.
1-1b, and is offset clockwise by an angle θ (10 degrees) with respect to a plane 54 that is perpendicular to the sheet conveyance plane 12.
開口５２−１ａ ．５３−１ａは、上記の開口５ １−
１ａとは逆に、中空固定中心軸５２−１．５３−１の中
心５２−１ｂ，５３−１ｂを通りシート紙搬送面１２に
対して垂直な而５５．５６に対して反時計方向に角度θ
偏倚して形成してある。Opening 52-1a. 53-1a is the opening 51-
1a, it passes through the centers 52-1b, 53-1b of the hollow fixed central shaft 52-1. θ
It is formed in a biased manner.
各中空固定中心，軸５１−１．５２−１．５３−１は、
負圧１１ｊ（ブ０ワ》５７に共通に接続してある。Each hollow fixed center, shaft 51-1.52-1.53-1 is
It is commonly connected to the negative pressure 11j (blower) 57.
シート紙１は、各シート紙ローラ組立体５１，５２．５
３により順次吸着されて、ガイド５８により支持案内さ
れつつ矢印Ｃ方向に搬送される。The sheet paper 1 is attached to each sheet paper roller assembly 51, 52.5.
3, and are conveyed in the direction of arrow C while being supported and guided by a guide 58.
ガイド５８の上面が前記のシート紙搬送面１２である。The upper surface of the guide 58 is the sheet paper conveying surface 12 described above.
各シート紙搬送０−ラ組立体５１．５２．５３．シート
紙１に付与する搬送力は夫々矢印Ｆ３．Ｆ４ ．Ｆｓで
示す如くになる。Each sheet paper transport 0-ra assembly 51.52.53. The conveying force applied to the sheet paper 1 is indicated by the arrow F3. F4. It becomes as shown by Fs.
即ち、シート紙搬送装置５０の入口部にある第１のシー
ト紙搬送Ｏ−ラ組立体５１が付与する搬送力Ｆ３は、シ
ート紙搬送面１２に対して斜上方に角度θ傾斜した方向
である。That is, the conveying force F3 applied by the first sheet conveying O-ra assembly 51 located at the entrance of the sheet conveying device 50 is in a direction that is tilted diagonally upward at an angle θ with respect to the sheet conveying surface 12. .
シート紙のジャムが発生し易い、シート紙搬送装置５０
の略中央部及び出口側にある第２，第３のシート紙搬送
ローラ組立体５２．５３が付与する搬送力Ｆ４．Ｆｓは
、シート紙搬送面１２に対して斜下方に角度θ傾斜した
方向となる。Sheet paper conveying device 50 where sheet paper jams are likely to occur
The conveying force F4. is applied by the second and third sheet paper conveying roller assemblies 52 and 53 located approximately at the center and on the exit side of F4. Fs is a direction inclined downward at an angle θ with respect to the sheet paper conveying surface 12.
このため、シート紙１はシート搬送面１２より浮き上が
ることなく搬送され、シート紙１の先端が上方にカール
している場合にも、定着器１の下面の段部１４に引っ掛
かってジャムを起こすことなく搬送される。Therefore, the sheet paper 1 is transported without being lifted from the sheet transport surface 12, and even if the leading edge of the sheet paper 1 is curled upward, it will not get caught on the stepped portion 14 on the bottom surface of the fuser 1 and cause a jam. transported without any problems.
第４図は本発明の別の実施例になるシート紙搬送装Ｈ６
０を示す。同図中、第２図に示す構成部分と対応する部
分には同一符号を付す。FIG. 4 shows a sheet paper conveying device H6 which is another embodiment of the present invention.
Indicates 0. In the figure, parts corresponding to those shown in FIG. 2 are given the same reference numerals.
第１，第２，第３のシート紙搬送０−ラ組立体５１Ａ．
５２Ａ．５３Ａは、中空固定中心軸５１Ａ−１．５２Ａ
−１．５３Ａ−１を、面５４．５５．５６に対して、反
時計方向と時計方向との両方向に角度γ偏倚した部位に
二つの開口５１Ａ−１０．５ １ Ａ −１１． ５
２Ａ −１０． ５ ２Ａ −１１，５３Ａ −１０．
５３Ａ −ｉｔを設けた構成である。First, second, and third sheet paper transport O-ra assemblies 51A.
52A. 53A is a hollow fixed central shaft 51A-1.52A
Two openings 51A-10.5 1A-11. 5
2A-10. 5 2A-11, 53A-10.
53A-it is provided.
各シート紙搬送ローラ組立体５１Ａ．５２Ａ，５３Ａは
、時計方向に偏倚している開口５１Ａ −１１． ５２
Ａ −１１． ５３Ａ−１１により、シート紙を早期に
吸着し、反時計方向に偏倚している開日５ １ Ａ −
１０． ５ ２Ａ −１０． ５ ３Ａ −１０により
シート紙搬送台１２に対して斜め下方に殿送力を付与す
る。Each sheet paper transport roller assembly 51A. 52A, 53A are openings 51A-11. which are biased clockwise. 52
A-11. 53A-11, the sheet paper is adsorbed early and the opening is biased counterclockwise.
10. 5 2A-10. 5 3A-10 applies an obliquely downward feeding force to the sheet paper conveying table 12.
本実施例によっても、シート紙はシート紙搬送面１２か
ら浮き上がることなく搬送されて、ジャムを生ずる虞れ
なく搬送される。According to this embodiment as well, the sheet paper is transported without rising from the sheet paper transport surface 12, and there is no risk of jamming.
また、本発明は、定着器がヒート０−ル式のものの場合
に適用してもＪｉｉｌ！の効果を生ずる。Further, the present invention can be applied even when the fixing device is of a heat zero type. produces the effect of
以上説明した様に、本発明によれば、シート紙搬送力が
、シート紙搬送面に対して斜め下方向の向きに付与され
、このため、シート紙に上方へのカールがある場合であ
っても、シート紙の搬送方向先端側のシート紙搬送面か
らの浮き上がりを防止し得、これにより定着器へ引っ掛
かってジャムすることを防止し得、シート紙の搬送の確
実性を向上し得る。As explained above, according to the present invention, the sheet paper conveying force is applied diagonally downward with respect to the sheet paper conveying surface, and therefore, even when the sheet paper is curled upward, Also, it is possible to prevent the leading edge side of the sheet paper in the conveyance direction from lifting off from the sheet paper conveyance surface, thereby preventing jamming caused by getting caught in the fixing device, and improving the reliability of conveyance of the sheet paper.
第１図は本発明の原理構成図、
第２図は本発明の一実施例になるシート紙搬送装置を示
す第３図中■一■線に沿う断面図、第３図は本発明の一
実施例になるシート紙搬送装置の一部切截平面図、
第４図は本発明の別の実施例を示す図、第５図は本発明
が適用される像形成装置を示す図、
第６図は従来例を示す図、
第７図は第６図中一のローラ組立体によるシート紙搬送
を説明する図、
第８図はシートのカールを示す図である。
図において、
１はシート紙、
２は閃光定着器、
３は像形成Ｉｌｌ、
１２はシート紙搬送面、
３０．５０．６０はシート紙搬送装置、５１，５２．５
３．５１Ａ．５２Ａ．５３Ａはシート紙搬送０−ラ組立
体、
３１．５２−１．５２−２．５３−２はローラ、３２．
５ １−２ａ ，５２−２ａ ．５３−２ａは孔、３３
．５１−１．５．２−１．５３−１．５１Ａ−１．５２
Ａ−１．５３Ａ−１は中空固定中心軸、３５．５７は負
圧源、
３６． ５１−１ａ ， ５２−１ａ ， ５３−１ａ
， ５１Ａ −１０．５２Ａ −１０． ５３Ａ
−１０は開口、３７．５１−１ｂ ，５２−１ｂ
，５３−１ｂは中心、３８．５４．５５．５６は面、
５８はガイド
を示す。
二κとシート檻四一噂乏汐ヒお〔逼［
第
１
図Fig. 1 is a diagram showing the basic configuration of the present invention, Fig. 2 is a cross-sectional view taken along line 1 - 2 in Fig. 3 showing a sheet paper conveying device which is an embodiment of the present invention, and Fig. 3 is an embodiment of the present invention. FIG. 4 is a partially cutaway plan view of a sheet paper conveying device according to an embodiment; FIG. 4 is a diagram showing another embodiment of the present invention; FIG. 5 is a diagram showing an image forming apparatus to which the present invention is applied; 7 is a diagram illustrating a conventional example, FIG. 7 is a diagram illustrating sheet paper conveyance by the first roller assembly in FIG. 6, and FIG. 8 is a diagram illustrating curling of a sheet. In the figure, 1 is a sheet paper, 2 is a flash fixing device, 3 is an image forming Ill, 12 is a sheet paper conveyance surface, 30.50.60 is a sheet paper conveyance device, 51, 52.5
3.51A. 52A. 53A is a sheet paper transport O-ra assembly, 31.52-1.52-2.53-2 is a roller, 32.
5 1-2a, 52-2a. 53-2a is a hole, 33
．． 51-1.5.2-1.53-1.51A-1.52
A-1.53 A-1 is a hollow fixed central shaft, 35.57 is a negative pressure source, 36. 51-1a, 52-1a, 53-1a
, 51A-10.52A-10. 53A
-10 is opening, 37.51-1b, 52-1b
, 53-1b is the center, 38, 54, 55, 56 are surfaces, and 58 is a guide. 2κ and seat cage 41 rumored lack of light
Claims (1)
し、シート紙（１）を搬送する方向に回転されるローラ
（３１、５１−２、５２−２、５３−２）と、該ローラ
を回転可能に支持し、上記シート紙が搬送される面側に
開口を有する中空固定中心軸（３３、５２−１、５３−
１）と、該中空固定中心軸と連通された負圧源（３５、
５７）とよりなり、上記ローラが回転することにより、
この周囲の孔が次々に上記開口と連通し、該連通した孔
が吸引作用を行い、上記シート紙を吸着して搬送するシ
ート紙搬送装置において、 上記中空固定中心軸の開口（３６、５２−１ａ、５３−
１ａ）を、該中空固定中心軸の中心（３７、５２−１ｂ
、５３−１ｂ）を通り上記シート紙搬送面（１２）に垂
直な面（３８、５４、５５、５６）に対してシート紙搬
送方向（Ｃ）に偏倚して設けてなり、シート紙搬送面に
対して斜め下方向の向きにシート紙搬送力を付与する構
成のシート紙搬送装置。[Claims] A roller (31, 51-2, 52-2) having a plurality of holes (32, 52-2a, 33-2a) around the periphery and rotating in the direction of conveying the sheet paper (1). , 53-2), and a hollow fixed central shaft (33, 52-1, 53-2) that rotatably supports the roller and has an opening on the side where the sheet paper is conveyed.
1), and a negative pressure source (35,
57) As the above roller rotates,
In a sheet paper conveying device in which the surrounding holes communicate with the opening one after another, and the communicating holes perform a suction action to attract and convey the sheet paper, the opening (36, 52- 1a, 53-
1a), the center of the hollow fixed central shaft (37, 52-1b
, 53-1b), and is biased in the sheet paper transport direction (C) with respect to the plane (38, 54, 55, 56) perpendicular to the sheet paper transport surface (12), and the sheet paper transport surface A sheet paper conveying device configured to apply a sheet paper conveying force diagonally downward.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010397A JP2799023B2 (en) | 1990-01-18 | 1990-01-18 | Sheet paper transport device |
| US07/637,772 US5186451A (en) | 1990-01-18 | 1991-01-07 | Sheet paper feed apparatus having vacuum feed rollers |
| EP91300112A EP0438219B1 (en) | 1990-01-18 | 1991-01-08 | Sheet paper feed apparatus |
| DE69104234T DE69104234T2 (en) | 1990-01-18 | 1991-01-08 | Sheet feeder. |
| EP94100685A EP0600849B1 (en) | 1990-01-18 | 1991-01-08 | Sheet paper feed apparatus |
| DE69125504T DE69125504T2 (en) | 1990-01-18 | 1991-01-08 | Sheet feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010397A JP2799023B2 (en) | 1990-01-18 | 1990-01-18 | Sheet paper transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03216453A true JPH03216453A (en) | 1991-09-24 |
| JP2799023B2 JP2799023B2 (en) | 1998-09-17 |
Family
ID=11749002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010397A Expired - Fee Related JP2799023B2 (en) | 1990-01-18 | 1990-01-18 | Sheet paper transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2799023B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215059A (en) * | 1975-07-23 | 1977-02-04 | Vits Maschinenbau Gmbh | Device for separating and piling sheets |
| JPS63100454U (en) * | 1986-12-19 | 1988-06-29 | ||
| JPS63175657U (en) * | 1986-11-13 | 1988-11-15 |
-
1990
- 1990-01-18 JP JP2010397A patent/JP2799023B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215059A (en) * | 1975-07-23 | 1977-02-04 | Vits Maschinenbau Gmbh | Device for separating and piling sheets |
| JPS63175657U (en) * | 1986-11-13 | 1988-11-15 | ||
| JPS63100454U (en) * | 1986-12-19 | 1988-06-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2799023B2 (en) | 1998-09-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |