JPH0455241A - Belt conveyor - Google Patents
Belt conveyorInfo
- Publication number
- JPH0455241A JPH0455241A JP2166423A JP16642390A JPH0455241A JP H0455241 A JPH0455241 A JP H0455241A JP 2166423 A JP2166423 A JP 2166423A JP 16642390 A JP16642390 A JP 16642390A JP H0455241 A JPH0455241 A JP H0455241A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- conveyor belt
- width
- roller
- nonelectrode
- 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.)
- Pending
Links
- 239000003989 dielectric material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005684 electric field Effects 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229920002799 BoPET Polymers 0.000 abstract description 2
- 239000005041 Mylar™ Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、紙葉等のシート材を搬送するベルトコンベア
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a belt conveyor for conveying sheet materials such as paper sheets.
従来の技術
従来、事務機等において紙葉を搬送する場合に、紙葉の
移動距離を正確に保つ要求があり、種々の方法が提案さ
れている。例えば、特開昭５０−１２９２３２号公報に
記載されているように、搬送ベルトに櫛形の電極を埋設
し、この電極から搬送ベルトに電荷を印加し、その時の
静電作用により搬送ベルトに紙葉を吸引させて搬送する
方法がある。この方法は、搬送ベルトに電極を埋設しな
ければならないため、製作が困難である。また、この搬
送ベルトを電子写真装置の転写ベルトとして使用する場
合には、転写ベルトの内方に配設した転写チャージャか
ら紙葉に放電するため、転写ムラが発生する等の影響が
あり、さらに、転写ベルトが屈曲されるために、電極の
断線、電極への加電接点の損傷等耐久性上の問題がある
。2. Description of the Related Art Conventionally, when paper sheets are conveyed in office machines, etc., there has been a demand for accurately maintaining the moving distance of the paper sheets, and various methods have been proposed. For example, as described in Japanese Patent Application Laid-Open No. 50-129232, a comb-shaped electrode is embedded in a conveyor belt, and an electric charge is applied from this electrode to the conveyor belt, and the electrostatic action at that time causes paper sheets to be attached to the conveyor belt. There is a method of suctioning and transporting. This method is difficult to manufacture because the electrodes must be embedded in the conveyor belt. In addition, when this conveyor belt is used as a transfer belt for an electrophotographic device, a transfer charger placed inside the transfer belt discharges electricity onto the paper sheet, which may cause uneven transfer. Since the transfer belt is bent, there are durability problems such as disconnection of the electrodes and damage to the electrical contacts to the electrodes.
また、米国特許節４，０２３，８９４号明細書に記載さ
れているように、搬送ベルトの内方を負圧に維持し、搬
送ベルトに多数の孔を形成することにより、搬送ベルト
に紙葉を吸引させる方法がある。この方法は、エアーポ
ンプやファン並びにエアーを流通させる管路を必要とす
るため、装置が大型化する。Further, as described in U.S. Pat. There is a way to attract it. This method requires an air pump, a fan, and a conduit for circulating air, which increases the size of the device.
さらに、回転する搬送体に設けたグリッパにより紙葉の
先端縁を把持する方法かある。この方法は、紙葉を把持
するまでに時間を必要とするため、紙葉を連続的に高速
で搬送するには不適当であり、紙葉を把持することがで
きない場合にはジャムが発生する。また、この紙葉の搬
送方法を電子写真装置に利用した場合には、グリッパに
対向する部分の紙葉には画像を形成することができない
。Furthermore, there is a method in which the leading edge of the sheet is gripped by a gripper provided on a rotating conveyor. This method is unsuitable for conveying paper sheets continuously at high speed because it takes time to grasp the paper sheets, and jams occur if the paper sheets cannot be grasped. . Further, when this sheet conveying method is used in an electrophotographic apparatus, an image cannot be formed on the portion of the sheet facing the gripper.
さらに、搬送ベルトに放電器により電気二重層を形成す
ることにより、搬送ベルトに紙葉を吸引させる方法等が
ある。この方法は、搬送ベルトから紙葉が離れると次の
紙葉に対する吸引力が低下し、−回紙葉を搬送する都度
、搬送ベルトを除電して新たに放ｒＭ器により帯電させ
る操作を必要とするため実用的でない。Furthermore, there is a method in which paper sheets are attracted to the conveyor belt by forming an electric double layer on the conveyor belt using a discharge device. In this method, when a sheet is separated from the conveyor belt, the suction force for the next sheet decreases, and each time a sheet is conveyed, the conveyor belt must be neutralized and then charged again using an RM device. Therefore, it is not practical.
このようなことから、特開昭５５−２８０１６号公報に
記載された方法がある。この方法は、感光体に形成され
た）・ナー像を紙葉に転写するために紙葉を搬送ベルト
により搬送する場合に、搬送ベルトに紙葉を吸引させる
ために搬送ベルトに電荷を印加する方法である。−・般
に、誘電体上に帯電領域と非帯電領域とを形成した場合
に、これらの帯電領域と非帯電領域との境には他より強
い電場が存在するため縁端効果をもたらす。このため、
搬送ベルトを均一に帯電させずに帯電領域と非帯電領域
とを模様状に配列した帯電パターンを形成することによ
り、紙葉の吸引力を向上させることができる。特開昭５
５−２８０１６号公報において、帯電パターンを形成す
る方法として、帯電パターンに対応する多数の孔を有し
て放′市器からのイオン流を遮蔽するマスクを放電器と
搬送ベルト一
との間に介在させる方法と、帯電パターンに対応する多
数の突部を有する導電性のローラのその突部の部分から
搬送ベルトに電荷を印加する方法とが記載されている。For this reason, there is a method described in Japanese Unexamined Patent Publication No. 55-28016. In this method, when a sheet of paper is conveyed by a conveyor belt in order to transfer a toner image (formed on a photoconductor) onto a sheet of paper, an electric charge is applied to the conveyor belt to cause the conveyor belt to attract the sheet of paper. It's a method. - Generally, when a charged region and an uncharged region are formed on a dielectric material, an edge effect occurs because a stronger electric field exists at the boundary between the charged region and the uncharged region than at other regions. For this reason,
By forming a charging pattern in which charged areas and uncharged areas are arranged in a pattern without uniformly charging the conveyor belt, the suction force for paper sheets can be improved. Japanese Patent Application Publication No. 5
5-28016, as a method of forming a charging pattern, a mask having a large number of holes corresponding to the charging pattern and blocking the ion flow from the discharge device is placed between the discharge device and the conveyor belt. A method is described in which a charge is applied to the conveyor belt from the protrusion portion of a conductive roller having a large number of protrusions corresponding to a charging pattern.
発明が解決しようとする課題
特開昭５５−２８０１６号公報に記載された方法は前述
した他の従来の問題点を改善することができる。この内
、放電器からのイオン流の一部をマスクで遮蔽して帯電
パターンを形成する方法は、帯電領域と非帯電領域との
境界が不明確で縁端効果が不十分で、紙葉の吸引力が低
く、紙葉の送り精度に欠ける。また、ローラの突部から
搬送ベルトに電荷を印加する方法は、効果を一層高める
ためには帯電領域と非帯電領域との配列を密にして電場
の強い部分を増加することが望ましく、このためにロー
ラの突部の配列を密にする必要がある。Problems to be Solved by the Invention The method described in Japanese Unexamined Patent Publication No. 55-28016 can improve the other conventional problems mentioned above. Among these methods, the method of forming a charged pattern by shielding a part of the ion flow from the discharger with a mask results in unclear boundaries between charged and uncharged regions, insufficient edge effect, and Suction power is low and paper feeding accuracy is lacking. In addition, in order to further enhance the effect of the method of applying electric charge to the conveyor belt from the protrusion of the roller, it is desirable to arrange the charged areas and non-charged areas densely to increase the areas where the electric field is strong. Therefore, it is necessary to arrange the protrusions of the roller closely.
しかし、突部の縁端から両側に電荷が周り込むため、突
部の幅より広い領域に電荷が印加され、非帯電領域が少
なくなるため、目的が半減される。However, since the charge wraps around from the edge of the protrusion to both sides, the charge is applied to an area wider than the width of the protrusion, reducing the uncharged area, which halves the purpose.
課題を解決するための手段
駆動部に連結されたローラを含む複数のローラと、誘電
体により形成されて前記ローラに巻回された搬送ベルト
と、この搬送ベルトに接触又は近接されて電源に接続さ
れる多数の電極部とこれらの電極部の間に配置された非
電極部とを有するとともに前記電極部の幅より前記非電
極部の幅を広くした電荷印加手段とにより構成した。Means for Solving the Problems A plurality of rollers including a roller connected to a drive unit, a conveyor belt formed of a dielectric material and wound around the rollers, and connected to a power source by being brought into contact with or in close proximity to the conveyor belt. The charge applying means has a large number of electrode parts and a non-electrode part disposed between these electrode parts, and the width of the non-electrode part is wider than the width of the electrode part.
作用
搬送ベルトに電荷印加手段を対向させる構造であるため
、部品点数を少なくしてコストを低減するとともに小型
化を図ることができ、また、電荷印加手段の非電極部の
幅を電極部の幅より広くすることにより、搬送ベルトに
電極部から電荷を印加した時に帯電領域と非帯電領域と
を等しくすることができ、これにより、電極部と非電極
部との配列ピッチを密にして縁端効果を発生する部分を
増やし紙葉の吸引力を高めることができる。Since the structure is such that the charge applying means faces the action conveyor belt, it is possible to reduce the number of parts, reduce costs, and achieve miniaturization. By making the conveyor belt wider, the charged area and uncharged area can be made equal when a charge is applied from the electrode part to the conveyor belt, and this allows the arrangement pitch of the electrode part and the non-electrode part to be dense and the edge edge It is possible to increase the area that generates the effect and increase the suction power of the paper leaf.
実施例
本発明の第一の実施例を第１図及び第２図に基づいて説
明する。一部しか図示しないがエンドレスの搬送ベルト
１が複数のローラ２に巻回されている。図中の搬送ロー
ラ１は金属製で接地されているとともにモータ（図示せ
ず）に連結されている。搬送ベルトｌは何れも商品名で
知られているマイラーやカイナー等の誘電体により形成
されている。３は全体が金属等の導電性材料により形成
された電荷付与部材である電極ローラで、この電極ロー
ラ３は直流電源４に接続されている。また、この電極ロ
ーラ３には、外周方向に突出する多数の電極部５と凹状
の非電極部６とが軸方向に沿って交互に配列されて形成
されている。Embodiment A first embodiment of the present invention will be explained based on FIGS. 1 and 2. Although only a portion is shown, an endless conveyor belt 1 is wound around a plurality of rollers 2. The conveyance roller 1 in the figure is made of metal, is grounded, and is connected to a motor (not shown). Each of the conveyor belts 1 is made of a dielectric material such as Mylar or Kynar, which is known by its trade name. Reference numeral 3 denotes an electrode roller which is a charge imparting member made entirely of a conductive material such as metal, and this electrode roller 3 is connected to a DC power source 4. Further, the electrode roller 3 is formed with a large number of electrode portions 5 protruding in the outer circumferential direction and concave non-electrode portions 6 arranged alternately along the axial direction.
前記搬送ベルト１は、図示しないがベルト感光体の回転
に同期されて駆動され、ベルト感光体１に形成されたト
ナー像の移動に合わせて紙葉７を搬送するものである。Although not shown, the conveyor belt 1 is driven in synchronization with the rotation of the belt photoreceptor 1, and conveys the sheet 7 in accordance with the movement of the toner image formed on the belt photoreceptor 1.
このような構成において、搬送ベルトｌはローラ２に駆
動されて紙葉７を搬送する。この時に、搬送ベルｌ−１
には電極部５によって直流電源４の電圧（約＋２ＫＶ）
が印加されるため、帯電領域８と非帯電領域９とが縞目
状に搬送ベルト１に形成される。この時、電極部５の縁
端から両側に電荷が周り込むため、帯電領域８の幅Ｃは
電極部５の幅ａより広くなり、逆に、非帯電領域９の幅
ｄは非電極部６の幅すより広くなるが、本発明において
は、電極部８と非電極部９とは、ｃ＝ｄになるようにａ
（ｂの関係をもって高密度に配列されている。In such a configuration, the conveyor belt 1 is driven by the roller 2 to convey the paper sheet 7. At this time, transport bell l-1
The voltage of the DC power supply 4 (approximately +2KV) is applied by the electrode part 5.
As a result, charged areas 8 and uncharged areas 9 are formed in a striped pattern on the conveyor belt 1. At this time, since charges flow around from the edge of the electrode section 5 to both sides, the width C of the charged region 8 becomes wider than the width a of the electrode section 5, and conversely, the width d of the uncharged region 9 becomes wider than the width a of the non-electrode section 6. However, in the present invention, the electrode portion 8 and the non-electrode portion 9 are separated by a such that c=d.
(They are arranged in high density with the relationship b.
したがって、帯電領域８と非帯電領域９との境界が明確
となり、これらの帯電領域８と非帯電領域９との境界の
電場の強い部分を増やすことかでき、したがって、縁端
効果により紙葉７を確実に搬送ベルト１に吸引させるこ
とができる。これにより、紙葉７の送り位置を正確に定
めることができる。このような作用は、搬送ベルト１に
電極ローラ３を対向させるだけで得られるため、構造の
簡略化及び小型化並びにコストダウンを図ることができ
る。Therefore, the boundary between the charged area 8 and the uncharged area 9 becomes clear, and the portion of the boundary between the charged area 8 and the uncharged area 9 where the electric field is strong can be increased. can be reliably attracted to the conveyor belt 1. Thereby, the feeding position of the paper sheet 7 can be determined accurately. Since such an effect can be obtained simply by arranging the electrode roller 3 to face the conveyor belt 1, it is possible to simplify the structure, reduce the size, and reduce the cost.
次いで、本発明の第二の実施例を第３図に基づいて説明
する。本実施例は、電極部１１と非電極部１２とを交互
に配列してなる電荷印加手段である櫛歯状の電極１０を
、前記実施例における電極ローラ３に代えて設けたもの
である。この場合においても、電極部１１の幅ａと非電
極部すとの関係は前記実施例と同様である。したがって
、前記実施例と同様の作用を得ることができる。Next, a second embodiment of the present invention will be described based on FIG. In this embodiment, a comb-shaped electrode 10, which is a charge applying means and is formed by alternately arranging electrode portions 11 and non-electrode portions 12, is provided in place of the electrode roller 3 in the previous embodiment. Even in this case, the relationship between the width a of the electrode portion 11 and the non-electrode portion is the same as in the previous embodiment. Therefore, the same effect as in the embodiment described above can be obtained.
第一、第二の実施例においては、何れも導電性の材料に
より形成された電極ローラ３又は電極ＩＯを用いている
ため、母材の一部を欠くことにより非電極部６又は１２
を形成しているが、合成樹脂やセラミック等の絶縁材の
表面に、電極部としての多数の導電部を電気的に接続し
て配列することにより電荷印加手段を形成してもよい。In the first and second embodiments, since the electrode roller 3 or the electrode IO made of a conductive material is used, the non-electrode portion 6 or 12 is removed by missing a part of the base material.
However, the charge applying means may be formed by electrically connecting and arranging a large number of conductive parts as electrode parts on the surface of an insulating material such as synthetic resin or ceramic.
発明の効果
本発明は上述のように、駆動部に連結されたローラを含
む複数のローラと、誘電体により形成されて前記ローラ
に巻回された搬送ベルトと、この搬送ベルトに接触又は
近接されて電源に接続される多数の電極部とこれらの電
極部の間に配置された非電極部とを有するとともに前記
電極部の幅より前記非電極部の幅を広くした電荷印加手
段とにより構成したので、搬送ベルトに電荷印加手段を
対向させる構造であるため、部品点数を少なくしてコス
トを低減するとともに小型化を図ることができ、また、
電荷印加手段の非電極部の幅を電極部の幅より広くする
ことにより、搬送ベルトに電極部から電荷を印加した時
に帯電領域と非帯電領域とを等しくすることができ、こ
れにより、電極部と非電極部との配列ピッチを密にして
縁端効果を発生する部分を増やし紙葉の吸引力を高める
ことができる等の効果を有する。Effects of the Invention As described above, the present invention includes a plurality of rollers including a roller connected to a drive unit, a conveyor belt formed of a dielectric material and wound around the roller, and a conveyor belt that is in contact with or near the conveyor belt. The charge applying means has a large number of electrode parts connected to a power source and a non-electrode part arranged between these electrode parts, and the width of the non-electrode part is wider than the width of the electrode part. Therefore, since the structure is such that the charge applying means is opposed to the conveyor belt, it is possible to reduce the number of parts, reduce costs, and achieve miniaturization.
By making the width of the non-electrode part of the charge applying means wider than the width of the electrode part, when a charge is applied to the conveyor belt from the electrode part, the charged area and the non-charged area can be made equal. This has the effect of increasing the arrangement pitch of the non-electrode portions and the non-electrode portions to increase the area where the edge effect occurs, thereby increasing the suction force of the paper sheet.
第１図及び第２図は本発明の第一の実施例を示すもので
、第１図は斜視図、第２図は電荷印加手段と搬送ベルト
−Ｉ−の帯電パターンとの関係を示す一部の平面図、第
３図は本発明の第二の実施例における電荷印加手段の斜
視図である。1 and 2 show a first embodiment of the present invention, FIG. 1 is a perspective view, and FIG. 2 is a diagram showing the relationship between the charge applying means and the charging pattern of the conveyor belt-I-. FIG. 3 is a perspective view of a charge applying means in a second embodiment of the present invention.
Claims (1)
体により形成されて前記ローラに巻回された搬送ベルト
と、この搬送ベルトに接触又は近接されて電源に接続さ
れる多数の電極部とこれらの電極部の間に配置された非
電極部とを有するとともに前記電極部の幅より前記非電
極部の幅を広くした電荷印加手段とよりなることを特徴
とするベルトコンベア。A plurality of rollers including a roller connected to a driving part, a conveyor belt formed of a dielectric material and wound around the roller, and a large number of electrode parts that are in contact with or in close proximity to the conveyor belt and connected to a power source. A belt conveyor comprising: a non-electrode portion disposed between these electrode portions; and a charge applying means having a width of the non-electrode portion wider than the width of the electrode portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2166423A JPH0455241A (en) | 1990-06-25 | 1990-06-25 | Belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2166423A JPH0455241A (en) | 1990-06-25 | 1990-06-25 | Belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455241A true JPH0455241A (en) | 1992-02-21 |
Family
ID=15831151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2166423A Pending JPH0455241A (en) | 1990-06-25 | 1990-06-25 | Belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2157034A1 (en) * | 2008-08-22 | 2010-02-24 | GKD-Gebr. Kufferath AG | Process belt, method for producing paper or non-woven fabric and use of a process belt |
| JP2014144830A (en) * | 2013-01-28 | 2014-08-14 | Kyocera Document Solutions Inc | Sheet carrier device and image formation apparatus |
-
1990
- 1990-06-25 JP JP2166423A patent/JPH0455241A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2157034A1 (en) * | 2008-08-22 | 2010-02-24 | GKD-Gebr. Kufferath AG | Process belt, method for producing paper or non-woven fabric and use of a process belt |
| JP2014144830A (en) * | 2013-01-28 | 2014-08-14 | Kyocera Document Solutions Inc | Sheet carrier device and image formation apparatus |
| US9067438B2 (en) | 2013-01-28 | 2015-06-30 | Kyocera Document Solutions Inc. | Sheet conveying device and image forming apparatus |
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