JPH01257881A - Toner carrier for electrostatic latent image developing device - Google Patents
Toner carrier for electrostatic latent image developing deviceInfo
- Publication number
- JPH01257881A JPH01257881A JP8565888A JP8565888A JPH01257881A JP H01257881 A JPH01257881 A JP H01257881A JP 8565888 A JP8565888 A JP 8565888A JP 8565888 A JP8565888 A JP 8565888A JP H01257881 A JPH01257881 A JP H01257881A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developing roller
- layer
- developing device
- thin film
- 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
- 239000010410 layer Substances 0.000 claims abstract description 32
- 238000005524 ceramic coating Methods 0.000 claims abstract description 15
- 239000011247 coating layer Substances 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000032258 transport Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010409 thin film Substances 0.000 abstract description 32
- 108091008695 photoreceptors Proteins 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 8
- 239000010408 film Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 238000005323 electroforming Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- RAPZEAPATHNIPO-UHFFFAOYSA-N risperidone Chemical compound FC1=CC=C2C(C3CCN(CC3)CCC=3C(=O)N4CCCCC4=NC=3C)=NOC2=C1 RAPZEAPATHNIPO-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、静電潜像現像装置にかかり、詳しくは現像
装置のトナー搬送部材の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrostatic latent image developing device, and more particularly to an improvement of a toner conveying member of the developing device.
［従来の技術］
近年、複写機あるいは静電記録装置は、小型化、低価格
化あるいは多色化のためその現像器にも小型化か要求さ
れている。さらにメンテナンスフリーの面からも現像器
のユニッ１へ化か強く望まれている。このような要求か
ら、静電潜像現像装置においては、現像スリーツ上にト
ナー薄層を形成し感光体に接触させて現像を行なう一成
分現像方式のものか注目されている。しかし、キャリア
を混合攪拌して帯電する二成分現像方式のものに比べ、
トナーの帯電か層厚規制フレートとトナー搬送部材であ
るスリーンの間を通過する瞬間に限られるため、十分な
トナー帯電量を均一に得ることか困難てあった。[Prior Art] In recent years, in order to make copying machines or electrostatic recording devices smaller, lower in price, or multi-colored, there has been a demand for smaller developing devices. Furthermore, from the viewpoint of maintenance-free operation, it is strongly desired to convert the developing device into a unit 1. In view of these demands, attention has been paid to electrostatic latent image developing devices that employ a one-component developing system in which a thin layer of toner is formed on a developing sleeve and brought into contact with a photoreceptor to perform development. However, compared to two-component development methods that charge by mixing and stirring carriers,
Since the toner is only charged at the moment when it passes between the layer thickness regulating plate and the toner transport member screen, it has been difficult to uniformly obtain a sufficient amount of toner charge.
このような欠点を解決するために、トナー搬送体のスリ
ーフ表面を凹凸化するとか、あるいは添加物を含有させ
た樹脂等をコーチインクする方法等が考えられている。In order to solve these drawbacks, methods have been considered such as making the sleeve surface of the toner conveying member uneven, or using a coach ink with a resin containing an additive.
しかし、強いストレスのかかる現像スリーブ表面に樹脂
等をコートしても摩耗性等の耐久性にも問題か生してい
た。However, even if the surface of the developing sleeve, which is subjected to strong stress, is coated with a resin or the like, problems arise in terms of durability such as abrasion resistance.
［発明か解決しようとする課題］
この発明は、このような点に鑑みてなされたもので、強
荷電性のセラミックスコーティングをツルーゲル法、ス
パッタリンク法等によりトナー搬送部材に施すことによ
って、極めて高い耐久性と安定した帯電性を両立てきる
トナー搬送部材を形成てきることを見出した。[Problem to be solved by the invention] The present invention has been made in view of the above-mentioned points, and by applying a highly charged ceramic coating to a toner conveying member by a true gel method, a sputter link method, etc. It has been found that it is possible to form a toner transport member that has both durability and stable charging performance.
この発明は、トナー粒子の搬送性、荷電性の向」二を図
り、さらには耐久性に優れ、層厚、荷電か一定なトナー
薄層を安定して形成することかてきるトナー搬送部材を
提供することを目的とする。This invention aims to improve the transportability and chargeability of toner particles, and also provides a toner transporting member that is excellent in durability and capable of stably forming a thin toner layer with a constant layer thickness and charge. The purpose is to provide.
［課題を解決するための手段］
この発明ては、表面にトナー粒子を担持し、所定の経路
に沿って搬送するトナー搬送部材と、−部を上記トナー
搬送部材の表面に圧接させ、搬送されてくるトナー粒子
の層厚を規制する層厚規制部材よりなる非磁性一成分ト
ナーの現像装置において、トナー搬送部材か表面に５Ｊ
Ｌｍ以下のセラミックスコーティング層を有するように
形成したものである。[Means for Solving the Problems] The present invention includes a toner transporting member that carries toner particles on its surface and transports them along a predetermined path; In a developing device for non-magnetic monocomponent toner, which includes a layer thickness regulating member that regulates the layer thickness of toner particles, the toner conveying member has 5J on the surface.
It is formed to have a ceramic coating layer of Lm or less.
［実 施 例］
以丁、図面を参照してこの発明の詳細な説明する。第１
図は、電子写真複写機の静電潜像現像装置の側断面図で
ある。即ち、現像装置ｌは矢印ａ方向に回転駆動する感
光体トラム７の側部に配置されている。現像ローラ３は
アルミニウム等の導電性ローラ、あるいはその上にゴム
等の弾性部材か被覆されて形成されたもので、この現像
ローラ３には図示しない現像バイアス電圧か印加される
ようになっている。それ故外周にゴム等の弾性部材を設
けるときには、適度の導電性を有することか望ましく、
カーボン等か混和される。また、表面に凹凸を有するよ
うに形成することか望ましい。[Example] The present invention will now be described in detail with reference to the drawings. 1st
The figure is a side sectional view of an electrostatic latent image developing device of an electrophotographic copying machine. That is, the developing device 1 is arranged on the side of the photosensitive tram 7 which is rotationally driven in the direction of the arrow a. The developing roller 3 is a conductive roller made of aluminum or the like, or is formed by covering it with an elastic material such as rubber, and a developing bias voltage (not shown) is applied to the developing roller 3. . Therefore, when providing an elastic member such as rubber on the outer periphery, it is desirable that it has appropriate conductivity.
Mixed with carbon, etc. It is also desirable to form the film so that the surface has irregularities.
現像ローラ３は矢印す方向に回転可能に支持されている
とともに、図示しない駆動源に連結されており、その外
周面か感光体トラム７の周面に接触するようになってい
る。また、現像ローラ３の上部に設けたトナー収容槽２
と一体の支持部材６には先端に金属丸棒を具備したトナ
ー層厚規制部材４か取り付けてあり、現像ローラ３の背
面斜め上部に接触してトナーＴｏの薄層を現像ローラ３
の表面に均一に付着するようになっている。トナー収容
槽２内には矢印Ｃ方向に回転するアジテータ５か設けら
れ、この回転に伴って移動するトナーＴｏは現像ローラ
３表面に搬送され、現像ローラ３と層厚規制部材４の圧
接部を通過することにより、現像ローラ３の表面に薄層
状のトナーＴｏを均一に塗布するとともに、摩擦により
摩擦帯電するように形成されている。The developing roller 3 is rotatably supported in the direction of the arrow, and is connected to a drive source (not shown), so that its outer circumferential surface contacts the circumferential surface of the photoreceptor tram 7. In addition, a toner storage tank 2 provided above the developing roller 3
A toner layer thickness regulating member 4 having a metal round bar at its tip is attached to the supporting member 6 integrated with the toner To, and the toner layer thickness regulating member 4 is attached to the supporting member 6 which is in contact with the oblique upper part of the back surface of the developing roller 3 to spread a thin layer of toner To onto the developing roller 3.
It is designed to adhere uniformly to the surface. An agitator 5 that rotates in the direction of arrow C is provided in the toner storage tank 2, and the toner To that moves with this rotation is conveyed to the surface of the developing roller 3 and presses the contact portion between the developing roller 3 and the layer thickness regulating member 4. By passing the developing roller 3, a thin layer of toner To is uniformly applied to the surface of the developing roller 3, and the developing roller 3 is formed to be triboelectrically charged by friction.
そして、現像ローラ３の表面には、５ｇｍ以下のセラミ
ックスコーティング層か形成されている。A ceramic coating layer of 5 gm or less is formed on the surface of the developing roller 3.
次に、現像ローラ３表面にセラミックスコーティング層
を形成する具体例を説明する。Next, a specific example of forming a ceramic coating layer on the surface of the developing roller 3 will be described.
■第１図に示すアルミニウム製の現像ローラ３のスリー
ブ表面に１分散媒として水−アルコール系を使用した５
ｉｎ２系セラミツクスバインターのコ〜ティンク液をス
プレー法により均一になるように塗布した後、温度１２
０°Ｃて２時間キュアーすることにより約１ｐｍの均一
なセラミックスハートコーチインク膜を有するスリーブ
Ａを得た。■A water-alcohol system was used as a dispersion medium on the sleeve surface of the aluminum developing roller 3 shown in Fig. 1.
After applying coating liquid of in2 ceramic binder uniformly by spraying method, the temperature was 12°C.
By curing at 0°C for 2 hours, a sleeve A having a uniform ceramic heart coach ink film of about 1 pm was obtained.
■表面をサントフラストにより表面粗さ８ｐｍの凹凸を
設けたアルミニウム製スリーブ表面に、上記スリーブＡ
のコーチインク材料を５ｉｎ２系に換えて、Ｓ １０２
Ｔ １０２ Ｃａ ２０３系のバインターコーチ
インク液に代え、ディップンク法により塗布した後、温
度１２０°Ｃて３時間キュアすることにより、約１ｇｍ
の均一な膜厚を有するセラミックスハートコーチインク
膜を有するスリーブＢを得た。■The above sleeve A
By changing the coach ink material to 5in2 type, S102
Approximately 1 gm was applied by applying the dip-unk method instead of T 102 Ca 203-based Bintercoach ink and then curing for 3 hours at a temperature of 120°C.
A sleeve B was obtained having a ceramic heart coach ink film having a uniform film thickness of .
なお、ここて得られたセラミックスハートコーチインク
膜は、Ｉｇｍと薄く均一であるため、スリーブのヘース
であるアルミニウムのフラスト面の凹凸をそのまま維持
していた。In addition, since the ceramic heart coach ink film obtained here was thin and uniform with Igm, the unevenness of the aluminum frust surface, which is the heath of the sleeve, was maintained as it was.
第２図は、静電潜像現像装置の他の例の構成を示ず側断
面図である。即ち、現像装置ｌＯは矢印ａ方向に回転駆
動する感光体トラム１００の側部に配置されている。FIG. 2 is a side sectional view showing the structure of another example of the electrostatic latent image developing device. That is, the developing device IO is arranged on the side of the photosensitive tram 100 that is rotationally driven in the direction of the arrow a.
弾性駆動ローラ２０はアルミニウム等の導電性部材の上
に、ゴム等の弾性部材か被覆された構成となっており、
このローラ２０には図示しない現像バイアス電圧か印加
されている。それ故に上層のゴム弾性部材は適度の導電
性を有するものである。The elastic drive roller 20 has a structure in which a conductive member such as aluminum is coated with an elastic member such as rubber.
A developing bias voltage (not shown) is applied to this roller 20. Therefore, the upper layer rubber elastic member has appropriate conductivity.
薄膜部材２１は、弾性駆動ローラ２０の外周長よりもや
や長目の周長な有する無端状のものて弾性駆動ローラ２
０に外装されている。The thin film member 21 is an endless member having a circumference slightly longer than the outer circumference of the elastic drive roller 20.
It is packaged in 0.
なお、トナー粒子搬送部材である薄膜部材２１は、無端
状のシートの表面を５ｐｍ以下のセラミツつてコーチイ
ンクされたものである。The thin film member 21, which is a toner particle conveying member, is an endless sheet whose surface is coach-inked with 5 pm or less of ceramic.
薄膜部材２１を装着された弾性駆動ローラ２０は回転可
能に支持されているとともに図示しない駆動源に連結さ
れている。駆動ローラ２０の両端部には、薄膜部材２１
を弾性駆動ローラ２０の外周面に密着させるためのスリ
ーブガイド１９か介在させである。従フて、薄膜部材２
０のスリーブガイド１９と接触する部分は、駆動ローラ
２０の外周面に密着し、弾性駆動ローラ２０の前面部分
に、弾性駆動ローラ２０の周長よりもやや長目に形成さ
れている薄膜部材２１の余長部分か集中し、薄膜部材２
１と弾性駆動ローラ２０との間に空間部Ｓか形成され、
この空間部Ｓを覆う薄膜部材２１の弛み部外周面か感光
体トラム１００の周面に接触している。The elastic drive roller 20 equipped with the thin film member 21 is rotatably supported and connected to a drive source (not shown). Thin film members 21 are provided at both ends of the drive roller 20.
A sleeve guide 19 is interposed to bring the roller into close contact with the outer peripheral surface of the elastic drive roller 20. Follower, thin film member 2
A thin film member 21 is formed on the front surface of the elastic drive roller 20 to be slightly longer than the circumference of the elastic drive roller 20. Concentrate on the extra length of thin film member 2
A space S is formed between 1 and the elastic drive roller 20,
The outer peripheral surface of the slack portion of the thin film member 21 covering this space S is in contact with the peripheral surface of the photoreceptor tram 100.
なお、弾性駆動ローラ２０の外周面と薄膜部材２１の内
周面との摩擦係数をル１．薄膜部材２１の外周面とスリ
ーブガイド１９の内面との摩擦係数を＋１．２とすると
Ｐ＋ ）ｐ−２の関係が付享されている。Note that the coefficient of friction between the outer circumferential surface of the elastic drive roller 20 and the inner circumferential surface of the thin film member 21 is expressed as R1. Assuming that the coefficient of friction between the outer circumferential surface of the thin film member 21 and the inner surface of the sleeve guide 19 is +1.2, a relationship of P+)p-2 is obtained.
このため弾性駆動ローラ２０か矢印す方向に回転すると
、これにつれて薄膜部材２１も同方向に従動し、空間部
Ｓを覆う薄膜部材２１の外面が適当なニップ幅をもって
感光体トラム１００の表面を摺擦するようにしである。Therefore, when the elastic drive roller 20 rotates in the direction indicated by the arrow, the thin film member 21 also moves in the same direction, and the outer surface of the thin film member 21 covering the space S slides on the surface of the photoreceptor tram 100 with an appropriate nip width. It's like rubbing.
弾性駆動ローラ２０の上部に設けた支持部材１６の背面
部には先端に金属丸棒２６を具備したトナー層厚規制部
材２２か取り付けてあり、この規制部材２２の規制部は
弾性駆動ローラ２０の背面側斜め上部に薄膜部材２１を
介して圧接している。A toner layer thickness regulating member 22 having a metal round bar 26 at the tip is attached to the back side of the support member 16 provided on the upper part of the elastic drive roller 20 . It is pressed into contact with the diagonally upper part of the back side through a thin film member 21.
現像槽１２の後部はトナー収容槽２５としてあり、この
トナー収容槽２５にはアジテータ２４か矢印Ｃ方向に回
転可能に設けてあり、このアジテータ２４はトナー収容
槽２５内に収容されているトナーＴｏを矢印Ｃ方向に移
動させつつそのフロラキンク等を防止するようにしであ
る。The rear part of the developer tank 12 is a toner storage tank 25, and an agitator 24 is provided in this toner storage tank 25 so as to be rotatable in the direction of arrow C. This is to prevent the flora kink and the like while moving it in the direction of arrow C.
なお、トナーＴ。は非磁性のものか使用されている。In addition, Toner T. Are non-magnetic materials used?
以下、前記構成からなる現像装置１０の動作について説
明する。The operation of the developing device 10 having the above configuration will be described below.
図示しない駆動源にて弾性駆動ローラ２０、アジテータ
２４かそれぞれ矢印す、ｃ方向に回転している状態にお
いて、トナー収容槽２５内のトナーＴｏはアジテータ２
４の攪拌作用を受けて矢印Ｃ方向に強制移動される。When the elastic drive roller 20 and the agitator 24 are rotating in the directions of arrows S and C, respectively, by a drive source (not shown), the toner To in the toner storage tank 25 is transferred to the agitator 2.
It is forcibly moved in the direction of arrow C under the stirring action of step 4.
一方、弾性駆動ローラ２０との庁擦力により薄ｎり部材
２１も矢印す方向に従動しており、薄膜部材２１と接す
るトナーＴｏは薄膜部材２１との接触および静電気的な
力によって矢印す方向への搬送力を受ける。そして、ト
ナーＴｏは、薄膜部材２１とトナー層厚規制部材２２の
先端部の金属丸棒２６とて形成されるくさび状の取り込
み部２３に取り込まれ、規制部材２２の圧接部に達する
と薄膜部材２１の表面に薄層状に均一に塗布されると共
に摩擦帯電される。On the other hand, the thinning member 21 is also driven in the direction indicated by the arrow due to the frictional force with the elastic drive roller 20, and the toner To in contact with the thin film member 21 is moved in the direction indicated by the arrow due to contact with the thin film member 21 and electrostatic force. receives the conveying force. Then, the toner To is taken into a wedge-shaped intake part 23 formed by a metal round bar 26 at the tip of the thin film member 21 and the toner layer thickness regulating member 22, and when it reaches the pressure contact part of the regulating member 22, the thin film member It is uniformly coated in a thin layer on the surface of 21 and triboelectrically charged.
薄膜部材２１上に保持されたトナーＴｏは、弾性駆動ロ
ーラ２０に従動する薄膜部材２１の動作に従って感光体
）・ラム１００との対向部（現像領域（Ｘ））に選ばれ
ると、感光体ドラム１００の表面電位と弾性駆動ローラ
２０に印加されているバイアス電圧との電圧差に基づき
、感光体トラム１００の表面に形成されている静電潜像
に付着してトナー像を形成する。When the toner To held on the thin film member 21 is selected to face the photoreceptor ram 100 (development area (X)) according to the operation of the thin film member 21 driven by the elastic drive roller 20, the toner To is applied to the photoreceptor drum. Based on the voltage difference between the surface potential of the photoreceptor 100 and the bias voltage applied to the elastic drive roller 20, toner adheres to the electrostatic latent image formed on the surface of the photoreceptor tram 100 to form a toner image.
ここて、感光体トラム１００と接する薄膜部材２１は、
空間部Ｓを介して弾性駆動ローラ２ｏと非接触状ＩＥに
あるため、薄膜部材２１は感光体トラム１００にソフ１
へに、しかも適当なニップ幅をもってむらなく接触し、
感光体トラム１００の静電潜像に均一なトナー像を形成
する。また、感光体トラム１００の周速度と薄膜部材２
１の速度との間に速度差をつけても、いったん感光体ト
ラム１００上に形成されたトナー像は破壊されることは
ない。Here, the thin film member 21 in contact with the photoreceptor tram 100 is
Since the thin film member 21 is in a non-contact state IE with the elastic drive roller 2o through the space S, the thin film member 21 is attached to the photoreceptor tram 100 with
contact evenly and with an appropriate nip width,
A uniform toner image is formed on the electrostatic latent image on the photoreceptor tram 100. Furthermore, the circumferential speed of the photoreceptor tram 100 and the thin film member 2
Even if a speed difference is made between the speed of 1 and 1, the toner image once formed on the photoreceptor tram 100 will not be destroyed.
現像領域Ｘを通過したトナーＴ。は引き続き薄膜部材２
１とともに矢印す方向に搬送され、そして、再びフレー
ト２２の圧接部にて薄膜部材２１の表面には均一な帯電
トナーの薄層か形成され、以下、前述の動作を繰り返す
ことになる。Toner T that has passed through development area X. continues to be thin film member 2
1 and is conveyed in the direction indicated by the arrow, and a uniform thin layer of charged toner is formed on the surface of the thin film member 21 again at the pressure contact portion of the plate 22, and the above-described operation is repeated thereafter.
以上の現像装置において可撓性を有する薄膜状のトナー
搬送部材は導電性ゴムを円筒状に形成したもの等から構
成してもよいが、電鋳法（エレクトロンオーミンク）に
より形成した無端円筒状のニッケル、アルミニウム、チ
タン、クロム、モリフデン、タンクステン等さらに合金
としては黄銅、真ちゅう、ステンレス、Ｇｏ−Ａｌ□０
３゜Ｐ ｂ Ｔ ｓ ０２ 、 Ｐ ｂ Ｔ Ｉ
Ｃ等に金属から成る導電性９ｊ膜を用いることかできる
。また、ボリカーホネート、ナイロン、ポリエステル、
フッ素樹脂等の樹脂から成る軟質の無端状に形成された
フィルム、さらに樹脂にカーホンクラファイ１〜または
金属または、金属耐化物微粉末等の導電性微粉末を含有
させたものから成る。In the above-mentioned developing device, the flexible thin-film toner conveying member may be made of conductive rubber formed into a cylindrical shape, but it may be made of an endless cylindrical material formed by an electroforming method (electron ohming). Nickel, aluminum, titanium, chromium, molybdenum, tanksten, etc. Furthermore, alloys include brass, brass, stainless steel, Go-Al□0
3゜P b T s 02 , P b T I
A conductive 9j film made of metal can be used for C or the like. In addition, polycarbonate, nylon, polyester,
It consists of a soft, endless film made of a resin such as a fluororesin, and a resin containing Carhon Krafi 1 or a metal, or a conductive fine powder such as a metal-resistant fine powder.
次に、薄膜部材２１にセラミックスコーティング層を形
成する具体例について説明する。Next, a specific example of forming a ceramic coating layer on the thin film member 21 will be described.
■ニッケル電鋳法て得られた厚さ４０ｇｍのニッケル製
無端状の薄膜部材の表面に、Ｓ ｉＯ２−Ｔ ｉ Ｏ２
系の分散媒として水−アルコール系を使用したバインタ
ーコーチインク液をスプレー法により均一になるように
塗布した後、温度１２０°Ｃて２時間キュアーすること
により約０．８ｇｍの厚さの均一なセラミックスハート
コーチインク膜を表面に有する無端状の薄膜ベルト部材
Ｃを得た。■S iO2-T i O2 is applied to the surface of a 40 gm thick nickel endless thin film member obtained by nickel electroforming.
A Bintercoach ink solution using a water-alcohol system as a dispersion medium was applied uniformly by a spray method, and then cured for 2 hours at a temperature of 120°C to form a uniform layer with a thickness of approximately 0.8 gm. An endless thin film belt member C having a ceramic heart coach ink film on its surface was obtained.
前記トナー搬送部材Ａ、ＢおよびＣの評価を行なうため
、次の組成によりトナーエおよびＩＩを製造した。In order to evaluate the toner conveying members A, B, and C, toners A and II were manufactured with the following compositions.
トナー■（＋帯電性トナー）
成 分
重量部・スチレン−ｎ−ツチル １００メ
タクリレート樹脂
（軟化点、１３２°Ｃ：カラス転移点、６０°Ｃ）・カ
ーボンブラック ５（三菱化成工
業（株）製、ＭＡ＃８）
・ニクロシン染料 ３（オリエ
ント化学工業（株）製、ボントロンＮ−旧）
・低分子量ポリプロピレン ３（三洋化
成工業（株）製、ビスコール５５０Ｐ）トナー■（−帯
電性トナー）
成 分 重量部・ポリエス
テル樹脂 １００（軟化点、１３０℃
ニガラス転移点、６０°Ｃ）・カーボンブラック
５（三菱化成工業（株）製、ＭＡ＃８
）
・クロム錯塩型染料 ３（保土谷
化学工業（株）製、スピロンブラックＴＲＨ）
・酸化型ポリプロピレン ３（三洋化
成工業（株）製、ビスコールＴＳ−２００）上記材料を
ボールミルで十分混合した後、温度１４０°Ｃに加熱し
た３木ロール上て混線した。Toner ■ (+ Chargeable toner) Ingredients
Parts by weight・Styrene-n-tutyl 100 methacrylate resin (softening point, 132°C; glass transition point, 60°C)・Carbon black 5 (manufactured by Mitsubishi Chemical Industries, Ltd., MA#8)・Nicrosine dye 3 (Orient (manufactured by Kagaku Kogyo Co., Ltd., Bontron N-old) ・Low molecular weight polypropylene 3 (manufactured by Sanyo Chemical Industries, Ltd., Viscoll 550P) Toner■ (-chargeable toner) Ingredients parts by weight Polyester resin 100 (softening point, 130) ℃
Nigaras transition point, 60°C)・Carbon black
5 (manufactured by Mitsubishi Chemical Industries, Ltd., MA#8
) - Chromium complex dye 3 (manufactured by Hodogaya Chemical Co., Ltd., Spiron Black TRH) - Oxidized polypropylene 3 (manufactured by Sanyo Chemical Industries, Ltd., Viscoll TS-200) After thoroughly mixing the above materials in a ball mill. The crosstalk occurred on a three-wood roll heated to a temperature of 140°C.
混練物を放置冷却後、フェサーミルを用い粗粉砕し、さ
らにシェツトミルて微粉砕した。つぎに、風力分級し、
平均粒径１１ ｇｍの微粉末トナーエおよびトナーＩＩ
を得た。After the kneaded material was left to cool, it was coarsely ground using a feather mill, and then finely ground using a sheath mill. Next, wind classification is performed,
Fine powder Toner A and Toner II with an average particle size of 11 gm
I got it.
実際、このトナーエおよびＩＩを実機において評価する
にあたっては、トナーＩ、ＩＩそれぞれ１００重量部に
対してコロイタルシリカＲ−９７４（日本アエロジル（
株）製）０．５重量部て表面処理を行なったものを使用
した。なお、このコロイタルシリ力はトナー表面には固
着されていない。In fact, when evaluating these Toners I and II in an actual machine, we used Colloidal Silica R-974 (Nippon Aerosil Co., Ltd.) for 100 parts by weight of each Toner I and II.
Co., Ltd.) surface-treated with 0.5 parts by weight. Note that this colloidal force is not fixed to the toner surface.
次に、前記したように製造した現像ローラのスリーンＡ
、Ｂおよび薄膜部材Ｃを上記トナーを使用して評価を行
なった。Next, sleen A of the developing roller manufactured as described above was prepared.
, B and thin film member C were evaluated using the above toner.
実施例１
ＥＰ−５０（ミノルタカメラ（株）製）を改造し、スリ
ーブの製造例１て得たスリーブＡを用いた第１図に示す
構成の現像装置を装着することによって、−成分現像方
式を持つ複写機を得た。Example 1 By modifying EP-50 (manufactured by Minolta Camera Co., Ltd.) and installing a developing device configured as shown in FIG. 1 using sleeve A obtained in Sleeve Production Example 1, -component development method I got a copy machine with a
この複写機にトナー■を使用して、初期の画像評価、お
よび耐刷テストを行ない、次に示す各種画像評価を行な
った。Using toner (1) in this copying machine, an initial image evaluation and a printing durability test were conducted, and the following various image evaluations were performed.
ｌ）画像上のかふり
白地画像」−のトナーかぶりを評価したところ、全体に
かふりの少ない良好な画像か得られた。これは、トナー
帯電量か十分に得られていることを示すものである。1) When the toner fog on the image was evaluated, it was found that a good image with little fog was obtained overall. This indicates that a sufficient amount of toner charge has been obtained.
２）黒ベタ像の後の下地かふり
半面か黒へ夕である原稿を用い、黒ベタ画像をコピーし
た後の白地画像上のトナーかぶりを評価したところ、黒
ベタ画像の有無にかかわらず、かぶりは少なかった。こ
れは、トナー帯電量の立ち上がりがはやく、良好な画像
か原稿によらずに安定して得られることを示すものであ
る。2) When we evaluated the toner fog on the white background image after copying the black solid image using an original with a half-sided or black undertone after the black solid image, we found that regardless of the presence or absence of the black solid image, There was little fog. This indicates that the toner charge amount rises quickly and good images can be stably obtained regardless of the original.
３）耐刷テスト
初期画像の評価をした後、ｌＯ万枚の耐刷テストを行な
い、画像を目視評価した。その結果、第１表に示した通
り、コピー枚数によらずかぶりの少ない安定した画像か
得られた。これは、トナー搬送部材上に施したセラミッ
クコーチインクか充分な耐久性を有していることを示す
ものである。3) Printing durability test After evaluating the initial image, a printing durability test of 10,000 sheets was conducted and the images were visually evaluated. As a result, as shown in Table 1, stable images with little fogging were obtained regardless of the number of copies. This indicates that the ceramic coach ink applied to the toner transport member has sufficient durability.
また、トナー搬送部材」−のトナー融着等の問題も全く
発生しなかった。Moreover, no problems such as toner fusion on the toner conveying member occurred.
実施例２
実施例１において、トナーをトナーＩＩに代え、感光体
を正帯電性のＳｅ系感光体に代える以外は、同様の評価
を行なった結果、いずれの評価も良好な結果か得られた
。（第１表参照）実施例３，４
実施例１．２において、スリーブを製造例２て得られた
スリーブＢに代える以外は、同様の評価を行なった結果
、いずれの評価も良好な結果か得らえた。（第１表参照
）
実施例５
ＥＰ−５０（ミノルタカメラ（株）製）を改造し、スリ
ーブの製造例３て得たスリーブＣを用いた第２図に示す
構成の現像装置を装着することによって、−成分現像方
式を持つ複写機を得た。この複写機にトナー■を使用し
て、実施例１と同様の評価を行なった結果、いずれの評
価も良好な結果か得られた。（第１表参照）
実施例６
実施例５において、トナーをトナーＨに代え、感光体を
正帯電性のＳｅ系感光体に代える以外は、同様の評価を
行なった結果、いずれの評価も良好な結果か得られた。Example 2 Evaluations were conducted in the same manner as in Example 1, except that the toner was replaced with Toner II and the photoreceptor was replaced with a positively charging Se-based photoreceptor. As a result, good results were obtained in all evaluations. . (See Table 1) Examples 3 and 4 The same evaluation was performed in Example 1.2 except that the sleeve was replaced with sleeve B obtained in Production Example 2. All evaluations were good. I got it. (See Table 1) Example 5 EP-50 (manufactured by Minolta Camera Co., Ltd.) was modified and equipped with a developing device configured as shown in FIG. 2 using sleeve C obtained in sleeve manufacturing example 3. As a result, a copying machine with a -component development system was obtained. Using toner (2) in this copying machine, evaluations similar to those in Example 1 were performed, and as a result, good results were obtained in all evaluations. (See Table 1) Example 6 The same evaluation as in Example 5 was performed except that the toner was replaced with Toner H and the photoreceptor was replaced with a positively charging Se-based photoreceptor. As a result, all evaluations were good. I got some good results.
（第１表参照）比較例１
実施例１において、スリーブをセラミックスコートして
いないものに代える以外は同様にして、初期の画像評価
を行なった結果、帯電性か悪く、かぶりの多い画像しか
得られなかった、（第１表参照）
以上の各実施例の評価にみられるように、−船釣にはセ
ラミックスコーティング層によるチャージアップ（電荷
蓄積量）が生し画像濃度の低下を起すはずであるか、層
厚か５ｐＬｍ以下であると減少は極めて小さく実用上問
題にならなかった。また、現像バイアス電圧か印加され
るのて、セラミックスコーティングの厚い層かあると絶
縁層であるのて有効に働かなくなり、画像カフリか発生
してしまう。セラミックスコーティングの層厚か５ｇｍ
以下であると実質上現像バイアスに大きな問題を生しる
ことかなかった。さらに、現像スリーブあるいはトナー
搬送体の表面は凹凸処理を行なって１−ナー搬送性を安
定化させているか、セラミックスコーティング層の層厚
か厚くなると凹凸か小さくあるいは無くなってしまい、
１−ナー搬送性か低下してしまう。しかし、層厚か５μ
ｍ以下であると表面の凹凸形状を歿したままの状ＩＥに
なるのて、トナーの搬送性を何ら低下させることかない
。そして、セラミックスコーティング層の層厚が厚いと
熱膨張率の違いによって剥離か起りクラックか生じやず
くなるか、層厚か５Ｂｍ以下であるとこれは一切発生し
なかった。(See Table 1) Comparative Example 1 An initial image evaluation was performed in the same manner as in Example 1 except that the sleeve was replaced with one that was not coated with ceramics. As a result, only images with poor chargeability and a lot of fog were obtained. (See Table 1) As can be seen in the evaluation of each example above, - In boat fishing, charge-up (charge accumulation amount) due to the ceramic coating layer should occur, causing a decrease in image density. If the layer thickness was 5 pLm or less, the decrease was extremely small and did not pose a practical problem. Further, when a developing bias voltage is applied, if there is a thick layer of ceramic coating, the insulating layer does not work effectively, resulting in image cuffing. Ceramic coating layer thickness: 5gm
When it was below, there was virtually no major problem with the developing bias. In addition, the surface of the developing sleeve or toner transport body is processed to have unevenness to stabilize the toner transportability, or as the thickness of the ceramic coating layer becomes thicker, the unevenness becomes smaller or disappears.
1-ner conveyance is reduced. However, the layer thickness is 5μ
If it is less than m, the IE will maintain the uneven shape of the surface, and the toner transportability will not be degraded in any way. When the ceramic coating layer was thick, peeling occurred due to the difference in coefficient of thermal expansion and cracks were less likely to occur, whereas when the layer thickness was 5 Bm or less, this did not occur at all.
（以下余白）
３、発明の効果
以上の説明で明らかなように、この発明にかかる静電潜
像現像装置のトナー搬送部材は、５ＩＬｍ以下のセラミ
ックスコーティング層を設けることによって、安定した
トナー帯電の立ち上かりを得るとともに、トナーの融着
を防止し、極めて高い耐久性と均一で安定な荷電のトナ
ー薄層を形成することかてきる。(The following is a blank space) 3. Effects of the Invention As is clear from the above explanation, the toner conveying member of the electrostatic latent image developing device according to the present invention achieves stable toner charging by providing a ceramic coating layer of 5 ILm or less. It is possible to obtain a rise, prevent toner from fusing, and form a thin toner layer with extremely high durability and uniform and stable charge.
第１図は、この発明の一実施例のトナー搬送体を有する
静電潜像現像装置の構成を示す断面図、第２図は、この
発明の他の実施例の薄膜部材のトナー搬送体を有する静
電潜像現像装置の構成を示す断面図である。
３．２１・・・・・・トナー搬送部材
４．２２・・・・・・トナー層厚規制部材７．１００・
・・・感光体ドラム
特許出願人 ミノルタカメラ株式会社FIG. 1 is a sectional view showing the structure of an electrostatic latent image developing device having a toner conveying body according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a toner conveying body of a thin film member according to another embodiment of the present invention. FIG. 2 is a cross-sectional view showing the configuration of an electrostatic latent image developing device. 3.21... Toner conveying member 4.22... Toner layer thickness regulating member 7.100.
...Photoconductor drum patent applicant Minolta Camera Co., Ltd.
Claims (1)
トナー搬送部材と、一部を上記トナー搬送部材の表面に
圧接させ、搬送されてくるトナー粒子の層厚を規制する
層厚規制部材よりなる非磁性一成分トナーの現像装置に
おいて、 上記トナー搬送部材が表面に５μｍ以下のセラミックス
コーティング層を有することを特徴とする静電潜像現像
装置のトナー搬送体。 ２、上記セラミックスコーティング層として少なくとも
シリコン、チタン、鉄、コバルト、Ｍ（Ｍ：アルカリ土
類金属）の酸化物のうちから選ばれる一成分もしくは多
成分系からなる材料を含有していることを特徴とする請
求項１記載の静電潜像現像装置のトナー搬送体。[Scope of Claims] 1. A toner transport member that carries toner particles and transports them along a predetermined path, and a portion of the toner transport member that is brought into pressure contact with the surface of the toner transport member to control the layer thickness of the toner particles that are transported. A toner conveying body for an electrostatic latent image developing device, in a developing device for non-magnetic one-component toner comprising a regulating layer thickness regulating member, wherein the toner conveying member has a ceramic coating layer of 5 μm or less on its surface. 2. The ceramic coating layer is characterized by containing at least one component or a multi-component material selected from oxides of silicon, titanium, iron, cobalt, and M (M: alkaline earth metal). The toner conveying member for an electrostatic latent image developing device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8565888A JPH01257881A (en) | 1988-04-07 | 1988-04-07 | Toner carrier for electrostatic latent image developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8565888A JPH01257881A (en) | 1988-04-07 | 1988-04-07 | Toner carrier for electrostatic latent image developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01257881A true JPH01257881A (en) | 1989-10-13 |
Family
ID=13864924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8565888A Pending JPH01257881A (en) | 1988-04-07 | 1988-04-07 | Toner carrier for electrostatic latent image developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01257881A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0478881A (en) * | 1990-07-20 | 1992-03-12 | Fuji Xerox Co Ltd | Developing device having toner carrying member and production of toner carrying member |
| US5322970A (en) * | 1993-04-23 | 1994-06-21 | Xerox Corporation | Ceramic donor roll for scavengeless development in a xerographic apparatus |
| US5600414A (en) * | 1992-11-09 | 1997-02-04 | American Roller Company | Charging roller with blended ceramic layer |
| JP2002287483A (en) * | 2001-03-27 | 2002-10-03 | Toshiba Tec Corp | Developing sleeve and image forming apparatus |
| WO2012172762A1 (en) | 2011-06-15 | 2012-12-20 | キヤノン株式会社 | Electrophotographic member, process cartridge and electrophotographic apparatus |
-
1988
- 1988-04-07 JP JP8565888A patent/JPH01257881A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0478881A (en) * | 1990-07-20 | 1992-03-12 | Fuji Xerox Co Ltd | Developing device having toner carrying member and production of toner carrying member |
| US5600414A (en) * | 1992-11-09 | 1997-02-04 | American Roller Company | Charging roller with blended ceramic layer |
| US5322970A (en) * | 1993-04-23 | 1994-06-21 | Xerox Corporation | Ceramic donor roll for scavengeless development in a xerographic apparatus |
| EP0621516A1 (en) * | 1993-04-23 | 1994-10-26 | Xerox Corporation | Ceramic donor roll for scavengeless development in a xerographic apparatus |
| JP2002287483A (en) * | 2001-03-27 | 2002-10-03 | Toshiba Tec Corp | Developing sleeve and image forming apparatus |
| JP4659305B2 (en) * | 2001-03-27 | 2011-03-30 | 東芝テック株式会社 | Developing sleeve and image forming apparatus |
| WO2012172762A1 (en) | 2011-06-15 | 2012-12-20 | キヤノン株式会社 | Electrophotographic member, process cartridge and electrophotographic apparatus |
| US9017239B2 (en) | 2011-06-15 | 2015-04-28 | Canon Kabushiki Kaisha | Electrophotographic member, process cartridge and electrophotographic apparatus |
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