JPH03227845A - Sheet conveying device and belt member used therefor - Google Patents
Sheet conveying device and belt member used thereforInfo
- Publication number
- JPH03227845A JPH03227845A JP9018890A JP1889090A JPH03227845A JP H03227845 A JPH03227845 A JP H03227845A JP 9018890 A JP9018890 A JP 9018890A JP 1889090 A JP1889090 A JP 1889090A JP H03227845 A JPH03227845 A JP H03227845A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- belt member
- conveying device
- electrodes
- inner layer
- 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
- 230000001939 inductive effect Effects 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 8
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、電子写真複写機等のシート搬送に用いられる
シート搬送装置に係り、特に、静電吸着力を利用するタ
イプのシート搬送装置及びこれに用いるベルト部材に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a sheet conveyance device used for sheet conveyance in an electrophotographic copying machine, etc., and particularly relates to a sheet conveyance device of a type that uses electrostatic adsorption force and The present invention relates to a belt member used for this purpose.
［従来の技術］
従来、この種の静電吸着力を利用するタイプのシート搬
送装置としては、第５図に示すように、片面に一定間隔
で複数の電極ａが並設された半導電性のベルト部材ｂ（
樹脂膜等）をシート搬送経路に沿って張架すると共に、
ベルト部材すの移動に伴っでその電極面側に摺接するよ
う複数の給電用ブラシＣを配設し、これら給電用ブラシ
Ｃに交互に高電圧（第５図ではプラス電位）及び低電圧
（第５図では接地電位）を印加することによって、ベル
ト部ｔｔＡｂ上に用紙等のシート状物ｐを静電吸着して
これを搬送するようにしたものか一般的である。[Prior Art] Conventionally, as a sheet conveying device of the type that utilizes this type of electrostatic adsorption force, as shown in FIG. Belt member b (
A resin film, etc.) is stretched along the sheet conveyance path, and
A plurality of power supply brushes C are arranged so as to come into sliding contact with the electrode surface side as the belt member moves, and high voltage (positive potential in Fig. 5) and low voltage (positive potential in Fig. 5) are alternately applied to these power supply brushes C. In general, a sheet-like material p such as paper is electrostatically attracted onto the belt portion ttAb and conveyed by applying a ground potential (in FIG. 5, ground potential).
そして、このような構造のシート搬送装置においては、
ベルト部材の電極の並設及び給電用ブラシの配設を高密
度化することにより、静電吸着力の発生単位領域かより
細分化するので、シート搬送機能のみでなく、電子写真
複写機等において感光体ドラムから記録シートへトナー
像を転写させる転写機能を与えることもてきる。このこ
とから、この種のシート搬送装置は、転写部を含むシー
ト搬送経路に沿って配設され、シート搬送転写装置とし
て使用されることもある。In a sheet conveying device with such a structure,
By increasing the density of the electrodes on the belt member and the arrangement of the power supply brushes, the unit area where electrostatic adsorption force is generated is divided into smaller areas, which is useful not only for sheet conveyance functions but also for electrophotographic copying machines, etc. It can also provide a transfer function to transfer the toner image from the photosensitive drum to the recording sheet. For this reason, this type of sheet conveyance device is sometimes disposed along a sheet conveyance path including a transfer section and used as a sheet conveyance transfer device.
［発明が解決しようとする課題］
ところで、このようなシート搬送装置においでそのベル
ト部材は、無端環状に形成され支持ロール間で回動して
使用されるか、無端環状に形成するに際しては以下に示
す事項に注意しなければならない。[Problems to be Solved by the Invention] Incidentally, in such a sheet conveying device, the belt member is formed into an endless ring shape and rotated between support rolls, or when formed into an endless ring shape, the following method is used. You must pay attention to the matters shown in the following.
第一は、無端環状に形成した際に周方向の全域において
同一形状の電極か同一間隔て並設されていることである
。もし仮に、電極の形成不良か存在すると、当該部分に
おいて静電吸着力が安定しないからである。The first is that when formed into an endless annular shape, electrodes of the same shape are arranged in parallel at the same interval over the entire circumferential area. This is because, if there is a defect in the electrode formation, the electrostatic adsorption force will not be stable in that part.
又、第二は、均一な厚さで無端環状に形成されているこ
とである。もし仮に、段差等厚みの違う部分が存在する
と、当該部分か支持ロールに接触した際にベルト部材の
走行速度にムラが発生し、トナー像の転写ズレといった
問題が発生するからである。The second reason is that it is formed into an endless ring shape with a uniform thickness. If there is a portion with a different thickness, such as a step, when the portion comes into contact with the support roll, uneven running speed of the belt member will occur, causing problems such as transfer deviation of the toner image.
このことから、ベルト部材としては、第６図に示すよう
な構造を有するものが提案されている。For this reason, a belt member having a structure as shown in FIG. 6 has been proposed.
具体的には、電極ａ並設された絶縁性の支持体シートｄ
と、この支持体シートｄの電極面側に積層される半導電
性シートｅからなり、支持体シートｄは前端及び後端の
端面同志を接着剤で接合して無端環状にすると共に、半
導電性シートｅは前端及び後端に重ね代を設けこれらを
熱プレス等で圧着してシームレス化し、更に、ベルト部
材の一端部では給電ブラシの摺接を考慮して電極が支持
体シートｄ上に表出する露出部ｆを設けたものである。Specifically, an insulating support sheet d arranged in parallel with the electrode a
and a semiconductive sheet e laminated on the electrode surface side of the support sheet d. The flexible sheet e has an overlapping margin at the front end and the rear end, and these are pressed together using a heat press or the like to make it seamless. Furthermore, at one end of the belt member, the electrode is placed on the support sheet d in consideration of the sliding contact of the power supply brush. An exposed portion f is provided.
又、特願昭６４−１４６７６３号には、上記構造に改良
を加えたものが提案されている。具体的には、第７図に
示すように、支持体シートｄの両端部に互いに噛合う段
部ｑを形成し、これら段部ｑの対向面を接着して支持体
シートｄを環状に形成すると共に、半導電性シートｅは
上記と同様熱プレスによって重ね代同志を圧着してシー
ムレス化したものである。Further, Japanese Patent Application No. 146763/1983 proposes an improved structure of the above structure. Specifically, as shown in FIG. 7, step portions q that engage with each other are formed at both ends of the support sheet d, and opposing surfaces of these step portions q are adhered to form the support sheet d into an annular shape. At the same time, the semiconductive sheet e is made seamless by pressing the overlapping margins together using a heat press in the same manner as described above.
これらの構造によれば、電極は端面が接着により接合さ
れる支持体シートに形成されているので、一定形状のも
のを一定間隔て並設することができる外、半導電性シー
トは熱プレスによって圧着されているので、接合部にお
いてヘルド部材の厚みか増すことも無く、環状ベルト部
材に要求される上記条件を満たすことかできた。According to these structures, the electrodes are formed on a support sheet whose end surfaces are joined by adhesive, so electrodes of a certain shape can be arranged side by side at a certain distance, and the semiconductive sheets can also be formed by heat pressing. Since it was crimped, the thickness of the heald member did not increase at the joint, and the above conditions required for an annular belt member could be met.
しかし、これらの構造では、半導電性シートか熱圧着に
より継目なく環状化されているのに対し、支持体シート
は端面接合によって環状化されているので接合強度か弱
いと言った欠点も有している。However, in these structures, the support sheet is formed into a ring by end-face bonding, whereas the semiconductive sheet is seamlessly formed into an annular shape by thermocompression bonding, so the joint strength is weak. There is.
そのため、第８図に示すように、極度の曲げモーメント
がｈＯえられる支持ローラーｈ上等においては支持体シ
ートｆの接合部ｉに応力が集中するので、支持体シート
ｆが円弧状に湾曲せずに突出し、半導電性シートｅを突
上げて亀裂を生じさせると言った問題点が生じている。Therefore, as shown in Fig. 8, stress is concentrated on the joint part i of the support sheet f on the support roller h where an extreme bending moment hO is obtained, so that the support sheet f is not bent into an arc shape. This poses a problem in that the semiconductive sheet e is pushed up and cracks are generated.
本発明はこのような問題点に鑑みなされたものであって
、その目的とするところは、環状ベルト部材が均一な厚
さ且つ均一な強度に形成され、走行ムラや亀裂の生じる
こと無く良好なシート搬送及びトナー像の転写を行うこ
とができるシート搬送装置及びこれに用いるベルト部材
を提供することにある。The present invention has been made in view of these problems, and its purpose is to form an annular belt member with uniform thickness and uniform strength, so that it can run smoothly without uneven running or cracks. An object of the present invention is to provide a sheet conveyance device capable of conveying a sheet and transferring a toner image, and a belt member used therefor.
［課題を解決するための手段］
上記目的を達成するために本発明のシート搬送装置は、
絶縁性の内層及びこれに積層される半導電性の外層を有
すると共に両層に挟まれて一定間隔て複数の電極か並設
され、外周面にシート状物を吸着して回動する継目のな
いシームレス環状ベルト部材と、上記複数の電極のうち
シート状物の搬送経路に而した電極群に給電して静電吸
着力を誘起する給電手段とからなることを特徴′とする
ものである。[Means for Solving the Problems] In order to achieve the above object, the sheet conveying device of the present invention has the following features:
It has an insulating inner layer and a semiconductive outer layer laminated thereon, and a plurality of electrodes are arranged in parallel at regular intervals between the two layers, and a joint that rotates by attracting a sheet-like object to the outer peripheral surface. The present invention is characterized by comprising: a seamless annular belt member, and a power supply means for inducing electrostatic adsorption force by supplying power to a group of the plurality of electrodes along the conveyance path of the sheet-like object.
このような技術的手段において、上記環状ベルト部材と
しては、絶縁性の内層及び半導電性の外層からなる２層
構造を有し、これらいずれの層も継目無く、即ちシーム
レスに形成されているものであれば良く、例えば、シー
ト状物の両端を互いに溶着することによってシームレス
としても良いし、あるいは樹脂を回転成形によってシー
ムレス環状体に成形しても良い。In such technical means, the annular belt member has a two-layer structure consisting of an insulating inner layer and a semiconductive outer layer, and both of these layers are seamlessly formed. For example, it may be made seamless by welding both ends of the sheet-like material to each other, or the resin may be formed into a seamless annular body by rotational molding.
又、絶縁性の内層としては、電極群及び外層を支持して
ベルト部材の強度を確保し、且つ可撓性のあるものであ
れば、その材質を適宜選択して差支えなく、例えば、ポ
リエステル、ポリイミド、芳香族ポリアミド等を使用可
能である。The insulating inner layer may be made of any suitable material as long as it supports the electrode group and the outer layer to ensure the strength of the belt member and is flexible, such as polyester, Polyimide, aromatic polyamide, etc. can be used.
更に、半導電性の外層としては、アクリル、塩ビ、ポリ
エステル、ポリプロピレン等の樹脂、又は各種ゴム等を
使用可能である。Furthermore, as the semiconductive outer layer, resins such as acrylic, vinyl chloride, polyester, and polypropylene, or various rubbers can be used.
［作 用１ 上記技術的手段は次のように作用する。[Work 1 The above technical means works as follows.
ベルト部材を構成する絶縁性の外層及び半導電性の内層
は、いずれも継目のないシームレス環状体を形成してい
るので、ベルト部材はその全周において均一な強度を有
することとなり、曲げモーメントを加えた際に局部的な
屈曲を生じることかなくなる。The insulating outer layer and the semiconductive inner layer that make up the belt member form a seamless annular body, so the belt member has uniform strength around its entire circumference and is able to withstand bending moments. This eliminates the possibility of local bending when applied.
［実施例］
以下、添附図面に基づいて本発明のシート搬送装置につ
いて詳細に説明する。[Example] Hereinafter, a sheet conveying device of the present invention will be described in detail based on the accompanying drawings.
第４図は本発明のシート搬送装置を画像形成装置の転写
部におけるシート搬送転写装置として利用したものであ
り、一対の駆動ロール３に支承されて回動じ、転写部４
を含む搬送経路に沿って記録シー１〜ｐを吸着して搬送
する環状ベルト部材１と、上記搬送経路でベルト部材１
に給電する給電手段２とから構成されている。FIG. 4 shows a sheet conveyance device of the present invention used as a sheet conveyance transfer device in a transfer section of an image forming apparatus, and is supported by a pair of drive rolls 3 and rotated,
an annular belt member 1 that adsorbs and transports the recording sheets 1 to 1 along a transport path including
and a power supply means 2 for supplying power to.
本実施例において、上記給電手段２は、ベルト部材１の
回動に伴いこれに形成された電極を摺擦するブラシ給電
器（図示せず）であり、用紙搬送経路に治って一定のピ
ッチで複数個が配列されている。配列されたブラシ給電
器には交互に高電圧と低電斤（例えば、１５００ＶとＯ
ｖ）が印加されてあり、これによってブラシ給電器に接
する電極間に電界か形成され、記録シートｐをベルト部
材１に静電吸着するものである。ただし、感光体ドラム
５と対向配置されるブラシ給電器には、感光体ドラム５
上に形成されているトナー像の極性と逆極性の電圧か印
加されてあり、これによって転写部４にあいでトナー像
か感光体ドラム５から記録シートｐへと転写されるよう
になっている。尚、嬉４図中の符号６は、転写部４にお
いて感光体ドラム５と記録シートｐとをニップする弾性
ロールである。In this embodiment, the power supply means 2 is a brush power supply device (not shown) that rubs against the electrodes formed on the belt member 1 as it rotates, and is arranged along the paper conveyance path at a constant pitch. Multiple pieces are arranged. The array of brush feeders alternates between high voltage and low voltage (for example, 1500V and O
v) is applied, whereby an electric field is formed between the electrodes in contact with the brush power feeder, and the recording sheet p is electrostatically attracted to the belt member 1. However, the brush power feeder disposed opposite to the photoreceptor drum 5 is
A voltage having a polarity opposite to that of the toner image formed thereon is applied, so that the toner image is transferred to the transfer section 4 from the photoreceptor drum 5 to the recording sheet p. . Incidentally, reference numeral 6 in Figure 4 is an elastic roll that nip the photosensitive drum 5 and the recording sheet p in the transfer section 4.
本実施例のベルト部材１は、第１図に示すように、絶縁
性の内層１１と半導電性の外層１２からなる２層構造に
より構成される継目の無いシームレス環状体であり、各
層１１．１２の間に一定の間隔て複数の電極１３が平行
に埋設されている。ベルト部材１の端部には給電手段２
のブラシ給電器を摺接させるための給電部１４か設けら
れてあり、この給電部１４においては電極１３が内層１
１に支持されて露出した状態となっている。As shown in FIG. 1, the belt member 1 of this embodiment is a seamless annular body having a two-layer structure consisting of an insulating inner layer 11 and a semiconductive outer layer 12, each layer 11. A plurality of electrodes 13 are buried in parallel between the electrodes 12 at regular intervals. A power supply means 2 is provided at the end of the belt member 1.
A power supply section 14 is provided for sliding contact with a brush power supply device, and in this power supply section 14, an electrode 13 is connected to the inner layer 1.
1 and is in an exposed state.
このベルト部材１は、第２図に示すように、電極１３が
形成されたＰＥＴフィルムからなる厚さ２０μｍ〜１５
０μｍの絶縁性シート１１と厚さ５０μｍ〜２５０μｍ
の半導電性樹脂シート１２とを積層して帯状ベルト部材
１′を形成し、これを環状にループさせた後に両端部１
ａ、 ｌｂを互いに溶着することにより製作される。上
記電極は、予め絶縁性シート１１に貼り付けられた銅箔
上に電極パターンに対応したレジストを設け、エツチン
グにより表出している銅箔を選択的に取除いた後、レジ
ストを除去することにより形成されている。尚、電極１
３の形成方法としては金属ペーストの印刷等により形成
することも可能であるが、耐摩耗性の高い電極を（ｑる
には本実施例の形成方法が好ましい。As shown in FIG.
0 μm insulating sheet 11 and thickness 50 μm to 250 μm
A belt-like belt member 1' is formed by laminating the semi-conductive resin sheets 12 of
It is manufactured by welding a and lb together. The above electrodes are made by providing a resist corresponding to the electrode pattern on a copper foil pasted on the insulating sheet 11 in advance, selectively removing the exposed copper foil by etching, and then removing the resist. It is formed. Furthermore, electrode 1
Although it is possible to form the electrode by printing a metal paste, etc., the method of forming the electrode of this embodiment is preferable in order to form an electrode with high wear resistance.
次に、ベルト部材１の製作手順について説明する。Next, the manufacturing procedure of the belt member 1 will be explained.
先ず、第３図（ａ）に示すように、電極１３か形成済み
の絶縁性シート１１に半導電性シート１２を重ね熱プレ
スによって両シート１１．１２が一体化した帯状ベルト
部材１′を作成する。但し、両端部においては絶縁性シ
ート１１と半導電性シート１２どの間に剥離紙１５を挟
み、両シート１１．１２が一体化しないようにする。こ
のように熱プレスを施すことにより、樹脂からなる比較
的柔かい半導電性シート１２内に絶縁性シート１１上の
電極１３を埋設することができる。尚、両シート１１．
１２の一体化に際しては、半導電性シート１２の特性及
びベルト部材１の柔軟性を損わないような接着剤、例え
ば、エポキシ、フェノール等の熱硬化性樹脂にニトリル
ゴム、ナイロン、アクリル等を組合せたものを、予め、
約２０μｍ以下の厚みで塗布しておくことが必要である
が、加熱により接着性の生じるような半導電性シートを
使用する場合はこの限りではない。First, as shown in FIG. 3(a), the semiconductive sheet 12 is layered on the insulating sheet 11 on which the electrodes 13 have already been formed, and the two sheets 11 and 12 are integrated by hot pressing to create a band-shaped belt member 1'. do. However, at both ends, a release paper 15 is sandwiched between the insulating sheet 11 and the semiconductive sheet 12 to prevent the two sheets 11 and 12 from being integrated. By performing hot pressing in this manner, the electrodes 13 on the insulating sheet 11 can be embedded in the relatively soft semiconductive sheet 12 made of resin. In addition, both sheets 11.
12, an adhesive that does not impair the properties of the semiconductive sheet 12 and the flexibility of the belt member 1, such as nitrile rubber, nylon, acrylic, etc., in a thermosetting resin such as epoxy or phenol, is used. The combined items are prepared in advance.
It is necessary to apply the film to a thickness of about 20 μm or less, but this is not the case when using a semiconductive sheet that becomes adhesive when heated.
次に、第３図（ｂ）に示すように、半導電性シート１２
が外層となるように上記帯状ベルト部材１′をループさ
せ、絶縁性シート１１の両端部１１ａ、１１ｂのみを重
ね合せる。このとき、夫々の端部に形成された電極１３
ａ、 １３ｂの間隔が各電極の形成ピッチｐと等しくな
るようにする（第３図（Ｃ）参照）。Next, as shown in FIG. 3(b), the semiconductive sheet 12
The band-shaped belt member 1' is looped so that the outer layer becomes the outer layer, and only the opposite ends 11a and 11b of the insulating sheet 11 are overlapped. At this time, the electrodes 13 formed at each end
The spacing between a and 13b is made equal to the formation pitch p of each electrode (see FIG. 3(C)).
尚、手ね代の幅の調整の手間を考慮した場合、フィルム
端面から夫々第一の電極１３ａ、 １３ｂまての長さは
、電極配設ピッチρに等しくするのが好ましい。When considering the effort required to adjust the width of the hand allowance, it is preferable that the lengths from the end surface of the film to the first electrodes 13a and 13b are equal to the electrode arrangement pitch ρ.
そして、この重ね合せた部分（重ね部）に対して超音波
溶着を施し、絶縁性シート１１をシームレス化する（第
３図（ｄ）参照）。超音波溶着は、重ね部を超音波ホー
ン７１と受は治具７２で挟み込むことにより行われ、溶
着時間は０．５〜２．０５ＥＣ１溶着圧力は５０〜２０
０Ｋｙ／ｃｔｒｒである。尚、受は治具７２は、フィル
ム１１に突き当てる当接面７３の幅が電極間隔ｐより１
０〜２０％小さく、又、溶着強度を向上させるという観
点からすれば、当接面７３をＲ形状とするか、または当
接面７３にローレット加工を施しておくのが好ましい。Then, ultrasonic welding is applied to this overlapped portion (overlapping portion) to make the insulating sheet 11 seamless (see FIG. 3(d)). Ultrasonic welding is performed by sandwiching the overlapped portion between an ultrasonic horn 71 and a jig 72, and the welding time is 0.5 to 2.05EC1 and the welding pressure is 50 to 20
It is 0 Ky/ctrr. Note that the width of the contact surface 73 of the support jig 72 that abuts against the film 11 is 1 greater than the electrode spacing p.
From the viewpoint of reducing the welding strength by 0 to 20% and improving the welding strength, it is preferable that the abutment surface 73 is rounded or knurled.
また、ホーン７１はフィルム幅を一度に溶着てきる長尺
のものを用いても良いが、小さなホーンを絶縁性シート
１１の幅方向に移動させるようにして用いても差し支え
ない。Further, the horn 71 may be a long one that can weld the film width at one time, but a small horn may be used so as to be moved in the width direction of the insulating sheet 11.
この場合でも、超音波撮動によりホーン７１の表面（シ
ート１１への接触面）と絶縁性シート１１との間の摩隙
抵抗は小さくなるので問題が生じることはない。Even in this case, no problem occurs because the frictional resistance between the surface of the horn 71 (the surface in contact with the sheet 11) and the insulating sheet 11 is reduced by ultrasonic imaging.
このように絶縁性シート１１をシームレス化した後、第
３図（ｅ）に示すように、絶縁性シート１１と一体化し
ていない部分の半導電性シート１２の両端部１２ａ、
１２ｂを重ね合せ、この部分に熱プレスを施しで半導電
性シート１２をシームレス化すると共に、絶縁性シート
１１と半導電性シート１２とを一体化する。After making the insulating sheet 11 seamless in this way, as shown in FIG.
12b are placed one on top of the other, and this portion is heat-pressed to make the semiconductive sheet 12 seamless, and at the same time, the insulating sheet 11 and the semiconductive sheet 12 are integrated.
これによって、絶縁性シート１１と半導電性シート１２
が一体に積層され、フィルム１１上に形成された電極１
３が半導電性シート１２に埋設された状態、即ち、第３
図（ｆ）に示すような構造か継目なく連続する環状ベル
ト部材を得ることができる。As a result, the insulating sheet 11 and the semiconductive sheet 12
are laminated together and formed on the film 11.
3 is embedded in the semiconductive sheet 12, that is, the third
A seamlessly continuous annular belt member having a structure as shown in FIG. (f) can be obtained.
そして、最後に給電部１４を形成すべく、ベルト部材片
側で円周方向に沿って半導電性シート１２に切れ目を入
れ、半導電性シート１２を剥離することにより第１図に
示す環状ベルト部材１が完成する。Finally, in order to form the power feeding part 14, a cut is made in the semiconductive sheet 12 along the circumferential direction on one side of the belt member, and the semiconductive sheet 12 is peeled off to form the annular belt member shown in FIG. 1 is completed.
尚、給電部を形成する方法としては、ベルト部材の製作
当初から絶縁性シートより幅の狭い半導電性シートを用
いるようにしても良い。Note that as a method of forming the power feeding section, a semiconductive sheet having a width narrower than an insulating sheet may be used from the beginning of manufacturing the belt member.
このように構成された本実施例のシート搬送装置におい
ては、ベルト部材が継目のないシームレス環状体に形成
されているので、その強度は全周で略均−化しており、
局部的な破断あるいは亀裂が可及的に防止されてベルト
部材の耐久性が著しく向上するものである。In the sheet conveying device of this embodiment configured as described above, since the belt member is formed into a seamless annular body, its strength is approximately equalized around the entire circumference.
Local breaks or cracks are prevented as much as possible, and the durability of the belt member is significantly improved.
［発明の効果］
以上説明してきたように、本発明のシート搬送装置及び
これに用いるベルト部材によれば、ベルト部材が継目の
ないシームレス環状体を形成され、ぞの仝周において均
一な強度を口して局部的な屈曲あるいは破断等を生じる
ことがないので、ベルト部材の耐久性か向上して、確実
なシート搬送及びトナー像の転写か可能なシート搬送装
置を得ることかでき、旦つ、当該装置を長期に渡り安定
して使用することか可能となる。[Effects of the Invention] As explained above, according to the sheet conveyance device of the present invention and the belt member used therein, the belt member is formed into a seamless annular body, and has uniform strength around the circumference. Since there is no possibility of local bending or breakage, the durability of the belt member is improved, and a sheet conveying device capable of reliable sheet conveyance and toner image transfer can be obtained. , it becomes possible to use the device stably for a long period of time.
第１図は本発明のシート搬送装置に用いられるヘルド部
材の第一実施例を示す斜視図、第２図は第一実施例に係
るベルト部材の構造を示す分解斜視図、第３図（ａ）
＝−（ｆ）はベルト部材の製作手順を示す説明図、第４
図は本発明のシート搬送装置の第一実施例を示す概略図
、第５図はシート搬送装置のベルト部材に対する給電機
構を示す概略図、第６図及び第７図はシート搬送装置に
用いられている従来のヘルド部材を示す概略図、第８図
は従来のベルト部材に生じ易い問題点を示ｖｂ明図であ
る。
［符号の説明］
１：ベルト部材 ２：給電手段
１１：内層（絶縁性シート）
１２：外＠（半導電性シート）
１３：電極
ｐ：記録シー１へ（シート状物）FIG. 1 is a perspective view showing a first embodiment of a heald member used in a sheet conveying device of the present invention, FIG. 2 is an exploded perspective view showing the structure of a belt member according to the first embodiment, and FIG. )
=-(f) is an explanatory diagram showing the manufacturing procedure of the belt member, the fourth
The figure is a schematic diagram showing a first embodiment of the sheet conveying device of the present invention, FIG. 5 is a schematic diagram showing a power supply mechanism for the belt member of the sheet conveying device, and FIGS. 6 and 7 are schematic diagrams showing a power supply mechanism used in the sheet conveying device. FIG. 8 is a schematic diagram showing a conventional heald member, and FIG. 8 is a clear view showing problems that tend to occur in the conventional belt member. [Explanation of symbols] 1: Belt member 2: Power supply means 11: Inner layer (insulating sheet) 12: Outside @ (semiconductive sheet) 13: Electrode p: To recording sheet 1 (sheet-like material)
Claims (4)
るシート搬送装置であつて、絶縁性の内層及びこれに積
層される半導電性の外層を有すると共に両層に挟まれて
一定間隔で複数の電極が並設され、外周面にシート状物
を吸着して回動する継目のないシームレス環状ベルト部
材と、上記複数の電極のうちシート状物の搬送経路に面
した電極群に給電して静電吸着力を誘起する給電手段と
からなることを特徴とするシート搬送装置。(1) A sheet conveying device that electrostatically attracts and conveys a sheet-like object such as a recording sheet, and has an insulating inner layer and a semiconductive outer layer laminated thereon, and is sandwiched between the two layers so as to be fixed. A seamless annular belt member in which a plurality of electrodes are arranged in parallel at intervals and rotates while adsorbing a sheet-like object on its outer peripheral surface, and a group of electrodes facing the conveyance path of the sheet-like object among the plural electrodes. A sheet conveyance device comprising a power supply means for supplying power and inducing electrostatic attraction force.
はベルト部材の端部でその一部が内層上に表出し、この
表出部分に給電手段が摺接して給電が行われることを特
徴とするシート搬送装置。(2) In the sheet conveying device according to claim 1, a portion of each electrode is exposed on the inner layer at the end of the belt member, and a power supply means slides into contact with this exposed portion to perform power supply. Sheet conveyance device.
るシート搬送装置に用いられるベルト部材であって、絶
縁性の内層及びこれに積層される半導電性の外層を有す
ると共に両層に挟まれて一定間隔で複数の電極が並設さ
れ、且つ、継目のないシームレス環状体に成形されてい
ることを特徴とするシート搬送装置に用いられるベルト
部材。(3) A belt member used in a sheet conveying device that electrostatically attracts and conveys a sheet-like object such as a recording sheet, which has an insulating inner layer and a semiconductive outer layer laminated thereon, and has both layers. 1. A belt member for use in a sheet conveying device, characterized in that a plurality of electrodes are arranged side by side at regular intervals between the two, and the belt member is formed into a seamless annular body.
ト部材において、各電極はその一部が内層上に表出し、
この表出部分に給電手段が摺接して給電が行われること
を特徴とするシート搬送装置に用いられるベルト部材。(4) In the belt member used in the sheet conveying device according to claim 3, a portion of each electrode is exposed on the inner layer,
A belt member used in a sheet conveying device, characterized in that a power supply means slides into contact with the exposed portion to supply power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018890A JPH03227845A (en) | 1990-01-31 | 1990-01-31 | Sheet conveying device and belt member used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018890A JPH03227845A (en) | 1990-01-31 | 1990-01-31 | Sheet conveying device and belt member used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03227845A true JPH03227845A (en) | 1991-10-08 |
Family
ID=11984164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9018890A Pending JPH03227845A (en) | 1990-01-31 | 1990-01-31 | Sheet conveying device and belt member used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03227845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012242433A (en) * | 2011-05-16 | 2012-12-10 | Fuji Xerox Co Ltd | Endless annular body and image forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186238A (en) * | 1986-02-12 | 1987-08-14 | Matsushita Electric Ind Co Ltd | Transfer device |
| JPH02243435A (en) * | 1989-03-16 | 1990-09-27 | Taihei Kagaku Seihin Kk | Electrostatic suction roll and manufacture thereof |
-
1990
- 1990-01-31 JP JP9018890A patent/JPH03227845A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186238A (en) * | 1986-02-12 | 1987-08-14 | Matsushita Electric Ind Co Ltd | Transfer device |
| JPH02243435A (en) * | 1989-03-16 | 1990-09-27 | Taihei Kagaku Seihin Kk | Electrostatic suction roll and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012242433A (en) * | 2011-05-16 | 2012-12-10 | Fuji Xerox Co Ltd | Endless annular body and image forming device |
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