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JPS5886548A - Electrostatic recording body - Google Patents

Electrostatic recording body

Info

Publication number
JPS5886548A
JPS5886548A JP18371281A JP18371281A JPS5886548A JP S5886548 A JPS5886548 A JP S5886548A JP 18371281 A JP18371281 A JP 18371281A JP 18371281 A JP18371281 A JP 18371281A JP S5886548 A JPS5886548 A JP S5886548A
Authority
JP
Japan
Prior art keywords
sheet
recording body
electrostatic recording
resin
thickness direction
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
Application number
JP18371281A
Other languages
Japanese (ja)
Inventor
Tetsuo Tanaka
哲夫 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP18371281A priority Critical patent/JPS5886548A/en
Publication of JPS5886548A publication Critical patent/JPS5886548A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/10Bases for charge-receiving or other layers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

PURPOSE:To obtain an inexpensive and durable cylindrical electrostatic recording body made of synthetic resin by providing a cylindrical shape to a sheet of a mixture of resin with carbon fibers and by adjusting the electric resistance of the sheet in the thickness direction to 10<2>-10<5>OMEGA/cm<3>. CONSTITUTION:To 100pts.wt. vinyl chloride resin for molding are added 50pts. wt. DOP and 10pts.wt. carbon fibers having 5mm. length, and they are mixed, dispersed and passed through the space between rolls to form a sheet having about 200mum thickness. The electric resistance of the sheet in the thickness direction is adjusted to 10<2>-10<5>OMEGA/cm<3>. The surface of the sheet is coated with a dielectric layer composed of 100pts.wt. silicone resin and 30pts.wt. alumina powder. By adhering both sides of the coated sheet to each other with ultrasonic waves, a cylindrical electrostatic recording body is obtd. When the recording body is attached to an electrostatic recording device and run, the printing resistance is increased by about 30 times that of a recording body using carbon black powder.

Description

【発明の詳細な説明】 本発明は耐久性の優れた静電記録用基体に関する。[Detailed description of the invention] The present invention relates to an electrostatic recording substrate with excellent durability.

PPC用ファクシミリなどに用いられる静電記録体は、
基体上に誘電層を設けたものであり、マルチスタイラス
を用いて静電荷を印加し、トナーを用いて現像後、その
トナーを普通紙に転写するために用いられる。かかる静
電記録体は転写後クリーニングしてくり返し使用される
ものである。
Electrostatic recording media used for PPC facsimile etc.
It has a dielectric layer on a substrate, and is used to apply an electrostatic charge using a multi-stylus, develop with toner, and then transfer the toner to plain paper. Such an electrostatic recording medium is cleaned after transfer and used repeatedly.

従来のこの種記録体としては、アルミニウム、ステンレ
ス等の導電性ドラム上に直接誘電層を設Uたものが知ら
れている。しかし、かかる記録体は長1時間の使用によ
り誘電層に微小な欠落が生じ、そのためにスタイラスか
らドラムに直接異状放電が発生し画像のみだれを生ずる
。又、金属ドラムとマルチスタイラスとの間に長時間適
正なギャップを保つことが回動である。
As a conventional recording medium of this type, one in which a dielectric layer is directly provided on a conductive drum made of aluminum, stainless steel, etc. is known. However, when such a recording medium is used for a long time, minute cracks occur in the dielectric layer, which causes abnormal discharge to occur directly from the stylus to the drum, resulting in blurred images. Rotation is also required to maintain a proper gap between the metal drum and the multi-stylus for a long period of time.

金属ドラムと誘電層との間に半導電■を設けたものもあ
るがこのようにしても金属ドラムとマルチスタイラスと
の間に長時間適正なギャップを保つことが困難である。
There are some devices in which a semiconducting layer (2) is provided between the metal drum and the dielectric layer, but even with this method, it is difficult to maintain a proper gap between the metal drum and the multi-stylus for a long period of time.

金属ドラムの代りに導電性フィルムよりなる基体の表面
に誘電層を設けた型式のものもあるが、フィルム素材が
ポリエステルの場合はフィルム中に充分−の導電性顔料
を練り込むことが困難であり、ポリエステル以外では耐
久性が不足して好ましくない。
Some models have a dielectric layer on the surface of a conductive film base instead of a metal drum, but if the film material is polyester, it is difficult to incorporate a sufficient amount of conductive pigment into the film. , materials other than polyester are undesirable due to insufficient durability.

そこで、ポリエステルフィルム層と誘電層との間に金属
蒸着層を設けたものもあるが、蒸着層のポリエステルへ
の接着ツノが小さく、例えばアースを取るための接触、
クリーニング等によって簡単に剥離してしまう。又、導
電度のコントロールは蒸着量によって行なうが極めて回
能である。且つ、放電に対して耐久性が小さい上に高価
になる欠点がある。
Therefore, some products have a metal vapor deposited layer between the polyester film layer and the dielectric layer, but the adhesion of the vapor deposited layer to the polyester is small, for example, making contact for grounding, etc.
It easily peels off during cleaning, etc. Furthermore, the conductivity is controlled by the amount of evaporation, but it is extremely difficult to control. Moreover, it has the drawbacks of low durability against discharge and high cost.

本発明は、上記従来の欠点を改善し、製造が容易で安価
であり、得られる画像が良好で、耐久性に優れている静
電記録体を提供せんとするもので、樹脂にカーボンファ
イバーを混合して円筒状となし、その厚さ方向の電気抵
抗が1CI”当り102〜10うΩとしたものを基体と
して用いることを特徴とする静電記録用基体である。
The present invention aims to improve the above-mentioned conventional drawbacks and provide an electrostatic recording material that is easy and inexpensive to manufacture, produces good images, and has excellent durability. This is a substrate for electrostatic recording, characterized in that the mixture is formed into a cylindrical shape, and the electrical resistance in the thickness direction is 10 2 to 10 Ω per 1 CI”.

使用されるポリマーとしてはポリエステル、セルロース
アセテートブチレート、ナイロン、 。
Polymers used include polyester, cellulose acetate butyrate, nylon, etc.

ポリエチレン、ポリビニルアセテート、ポリビニルクロ
ライド1、アクリロニトリル−ブタジェン−スチレン共
重合体、ポリプロピレン、およびこれらの共重合体があ
るが上記は一例であり、これに限らない。
Examples include polyethylene, polyvinyl acetate, polyvinyl chloride 1, acrylonitrile-butadiene-styrene copolymer, polypropylene, and copolymers thereof, but the above are examples and are not limited thereto.

必要に応じて各種可塑剤などが添加される。Various plasticizers and the like are added as necessary.

カーボンファイバーは長さ10−以下のもので、市販品
としては、例えば東し社製1〜レカ、日本カーボン社製
カーボンZ、東海電極社製パイロフィル等がある。
The carbon fiber has a length of 10 mm or less, and commercially available products include, for example, 1 to Reca manufactured by Toshi Co., Ltd., Carbon Z manufactured by Nippon Carbon Co., Ltd., and Pyrofil manufactured by Tokai Electrode Co., Ltd.

カーボンファイバーの全固形分中の割合は、使用される
カーボンファイバーの特性によって定まるが、たとへば
ナイロンとパイロフィルの組み合わせでは7〜15%が
適当である。
The proportion of carbon fiber in the total solid content is determined by the characteristics of the carbon fiber used, but for example, in the case of a combination of nylon and pyrofil, 7 to 15% is appropriate.

これを円筒状に成型するには既知の成型方法、例えばイ
ンフレーション、エクストルート、インジエクション、
キャスティング、回転成型などが用いられ、その成型温
度などは実験によって最終的に定められる。シート状の
ものをベルト状にするには、接着剤、熱、媚音波による
接着などが行われる。
To mold this into a cylindrical shape, known molding methods such as inflation, extrusion, injection,
Casting, rotational molding, etc. are used, and the molding temperature is ultimately determined through experiments. To make a sheet into a belt, bonding using adhesives, heat, or aphrodisiac waves is used.

この様にして得られた基体は引張強度、摩耗率などが著
しく増大し、この上に顔料と樹脂混合系よりなる誘電層
をもさけると、1万回以上のくり返し帯電(画像記録)
−現像一転写一クリーニングの工程に耐えることが判明
した。
The substrate obtained in this way has significantly increased tensile strength and abrasion rate, and if a dielectric layer made of a pigment and resin mixture is also avoided, it can be repeatedly charged (image recording) more than 10,000 times.
- It was found that it could withstand the steps of development, transfer, and cleaning.

誘電層は樹脂と顔料との混合物であり、その混合割合は
前者が100重量部に対して後者が5〜70il量部が
適当である。顔料の粒径は3〜15μ−が適当である。
The dielectric layer is a mixture of resin and pigment, and the appropriate mixing ratio is 100 parts by weight of the former to 5 to 70 parts by weight of the latter. The particle size of the pigment is suitably 3 to 15 microns.

樹脂としては前記の導電性材料の結着に用いた樹脂やシ
リコン樹脂が用いられる。顔料としては、電気抵抗の高
いもの例えば各種プラスチックパウダー。、シリカ、ク
レー、ガラス粉、アルミナ、酸化亜鉛、酸化チタン、炭
酸カルシウム、タルク粉などが用いられる。
As the resin, the resin used for binding the conductive material described above or silicone resin is used. Pigments include those with high electrical resistance, such as various plastic powders. , silica, clay, glass powder, alumina, zinc oxide, titanium oxide, calcium carbonate, talcum powder, etc. are used.

つぎに実施例について述べる。Next, examples will be described.

実施例1 成形用の塩化ビニル樹脂    100重量部D OP
              501■部カーボンファ
イバー、5mm長 (商品名トレカ、東しc株1製)  101■部上記組
成物を加熱プレ分散後、加熱したロール閤を通して厚基
約200μ−のシートを作成した。101 ’当りの厚
さ方向の電気抵抗は5.0×1080であった。
Example 1 Vinyl chloride resin for molding 100 parts by weight D OP
501 parts carbon fiber, 5 mm length (trade name: Trading Card, manufactured by Toshi C Co. 1) 101 parts The above composition was heated and pre-dispersed, and passed through a heated roll to form a sheet with a thickness of about 200 μm. The electrical resistance in the thickness direction per 101' was 5.0×1080.

この表面上にシリコン樹11100重饅部、アルミナ粉
体30重量部よりなる誘電層を4.50/l”の付着−
になるように塗布して静電記録体を作った。
On this surface, a dielectric layer consisting of 11,100 parts by weight of silicone and 30 parts by weight of alumina powder was attached at a rate of 4.50/l.
An electrostatic recording material was made by coating the material so as to give the following properties.

この両端を超音波接合装置を用いて接着し、筒状の記録
体とした。
Both ends of this were adhered using an ultrasonic bonding device to form a cylindrical recording body.

これを静電記録装置に取付1ノてランニングしたところ
、A−4の大きさr 15000枚の印字が可能であっ
た。一方カーボンフファイバーの代りにカーボンブラッ
ク粉体を用いて電気抵抗を調整したものは約300枚で
記録体にクルジが生じて走行に支障をきたした。
When this was attached to an electrostatic recording device and run for one time, it was possible to print on 15,000 sheets of A-4 size r. On the other hand, when the electrical resistance was adjusted by using carbon black powder instead of carbon fiber, curvature occurred on the recording medium after about 300 sheets, which caused trouble in running.

実施例2 高圧法ポリエチレン      100重量部トレカ 
             7重量部上記組成物を同じ
ように成型して誘電層を塗布し記録体を作成した。
Example 2 High-pressure polyethylene 100 parts by weight Trading card
A recording medium was prepared by molding 7 parts by weight of the above composition in the same manner and applying a dielectric layer.

このものは20000枚のランニングを行っても何のト
ラブルも生じなかった。
This product did not cause any trouble even after running 20,000 sheets.

特許出願人  株式会社  リコー 代理人弁理士    小松  秀岳Patent applicant: Ricoh Co., Ltd. Representative Patent Attorney Hidetake Komatsu

Claims (1)

【特許請求の範囲】[Claims] 樹脂とカーボンファイバーとを混合してなる円筒状体の
厚さ方向の電気抵抗が、lc1当り10”〜101Ωと
したものを基体として用いることを特徴とする静電記−
゛録体。
An electrostatic recorder characterized in that a cylindrical body made of a mixture of resin and carbon fiber has an electric resistance in the thickness direction of 10'' to 101 Ω per lc as a substrate.
Recorded body.
JP18371281A 1981-11-18 1981-11-18 Electrostatic recording body Pending JPS5886548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18371281A JPS5886548A (en) 1981-11-18 1981-11-18 Electrostatic recording body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18371281A JPS5886548A (en) 1981-11-18 1981-11-18 Electrostatic recording body

Publications (1)

Publication Number Publication Date
JPS5886548A true JPS5886548A (en) 1983-05-24

Family

ID=16140634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18371281A Pending JPS5886548A (en) 1981-11-18 1981-11-18 Electrostatic recording body

Country Status (1)

Country Link
JP (1) JPS5886548A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60249152A (en) * 1984-05-25 1985-12-09 Matsushita Electric Ind Co Ltd Manufacture of endless belt type photosensitive body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60249152A (en) * 1984-05-25 1985-12-09 Matsushita Electric Ind Co Ltd Manufacture of endless belt type photosensitive body

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