JPS6237238Y2 - - Google Patents
Info
- Publication number
- JPS6237238Y2 JPS6237238Y2 JP1981128501U JP12850181U JPS6237238Y2 JP S6237238 Y2 JPS6237238 Y2 JP S6237238Y2 JP 1981128501 U JP1981128501 U JP 1981128501U JP 12850181 U JP12850181 U JP 12850181U JP S6237238 Y2 JPS6237238 Y2 JP S6237238Y2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- magnet
- roll
- hollow cylindrical
- outer peripheral
- 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.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Description
【考案の詳細な説明】
この考案は、電子写真の静電潜像を磁気ブラシ
現像するための磁石ロールに関する。[Detailed Description of the Invention] This invention relates to a magnet roll for developing electrostatic latent images in electrophotography with a magnetic brush.
図面に示すように、静電現像用磁石ロール１
は、中空円筒状非磁性スリーブ３とこのスリーブ
３内に配置された磁石体２とから構成されてい
る。そして、この磁石ロール１は、光導電体ロー
ル５に対向してトナー容器４内に配置され、この
容器４内のトナーを磁力によつてスリーブ３の外
周面に付着させ、回転することによつて搬送し、
ロール５上の静電潜像を現像する。静電現像用磁
石ロール１には、磁石体２を固定しスリーブ３を
回転させるもの、逆に磁石体２を回転させスリー
ブ３を固定しておくもの、および磁石体２とスリ
ーブ３の両方を回転させるものがある。 As shown in the drawing, magnet roll 1 for electrostatic development
is composed of a hollow cylindrical non-magnetic sleeve 3 and a magnet body 2 disposed within this sleeve 3. The magnet roll 1 is disposed in a toner container 4 facing the photoconductor roll 5, and causes the toner in the container 4 to adhere to the outer peripheral surface of the sleeve 3 by magnetic force, and is rotated. transport it with
The electrostatic latent image on roll 5 is developed. The magnet roll 1 for electrostatic development includes one that fixes the magnet body 2 and rotates the sleeve 3, one that rotates the magnet body 2 and fixes the sleeve 3, and one that holds both the magnet body 2 and the sleeve 3. There is something to rotate.
磁石ロール１は、スリーブ３の外周面にトナー
をいわば毛羽立つた状態で付着させ、ロール５に
対してブラシを形成するものであるから、スリー
ブ３の外周面とロール５の外周面との間の間隔、
およびスリーブ３の外周面と容器４のスクレーパ
４ａとの間の間隔を常に一定に保持しておく必要
がある。したがつて、スリーブ３を回転させる形
式のものでは、スリーブ３の外周面を高精度に仕
上げなければならない。 The magnetic roll 1 attaches the toner in a so-called fluffy state to the outer peripheral surface of the sleeve 3 and forms a brush for the roll 5. interval,
It is also necessary to maintain a constant distance between the outer peripheral surface of the sleeve 3 and the scraper 4a of the container 4. Therefore, in the case of a type in which the sleeve 3 is rotated, the outer peripheral surface of the sleeve 3 must be finished with high precision.
従来の静電現像用磁石ロールにおいては、スリ
ーブとして、引抜法で形成されるアルミニウム管
が使用されている。アルミニウム引抜管のままで
は要求される高精度のものが得られないので、ア
ルミニウム引抜管の外周面には精密な仕上げ加工
が施こされる。したがつて、従来の磁石ロールで
は、この仕上げ加工に多くの手間を要し、高価と
なるという欠点があつた。 In conventional magnet rolls for electrostatic development, an aluminum tube formed by a drawing method is used as the sleeve. Since it is not possible to obtain the required high precision with aluminum drawn pipes, precision finishing is performed on the outer peripheral surface of aluminum drawn pipes. Therefore, conventional magnetic rolls have the disadvantage that this finishing process requires a lot of effort and is expensive.
この考案は、加工が容易で安価に提供すること
ができるとともに、トナーの搬送能力の大きい静
電現像用磁石ロールを提供することを目的とす
る。 The object of this invention is to provide a magnetic roll for electrostatic development that is easy to process, can be provided at low cost, and has a large toner conveyance capacity.
この考案による静電現像用磁石ロールは、中空
円筒状スリーブと、このスリーブ内に配置された
磁石体とからなるものであつて、中空円筒状スリ
ーブが繊維強化プラスチツク（以下FRPとい
う）で形成され、かつその外周面が粗面化されて
いることを特徴とする。 The magnet roll for electrostatic development according to this invention consists of a hollow cylindrical sleeve and a magnet body placed inside the sleeve, and the hollow cylindrical sleeve is made of fiber reinforced plastic (hereinafter referred to as FRP). , and its outer peripheral surface is roughened.
FRPは、繊維基材を合成樹脂で結合させたも
のである。用いられる繊維には、ガラス繊維、芳
香族ポリアミド系、カーボン繊維、金属繊維、こ
れらのフイラメント糸、およびこのフイラメント
糸のチヨツプ繊維よりなるマツトなどがある。こ
のうちでも、ガラス繊維が強度および価格の点で
好適である。また合成樹脂としては、エポキシ樹
脂およびポリエステル樹脂が引抜作業性、強度お
よび耐熱性の点で好ましい。磁石ロールの中空円
筒状スリーブは、連続引抜法により成形された
FRP管を所要の長さに切断して、その表面を旋
盤で切削加工することにより、製作させる。
FRP管は、連続引抜法によつて高精度のものが
成形されるから、外周面の表面加工は必ずしも必
要なく、表面仕上げを行なつたとしても非常に容
易である。また、FRPで形成されたスリーブは
適当な硬さを持つているので、トナーの搬送に好
適である。 FRP is made by bonding fiber base materials with synthetic resin. The fibers used include glass fibers, aromatic polyamide fibers, carbon fibers, metal fibers, filament yarns thereof, and mats made of chopped fibers of these filament yarns. Among these, glass fiber is preferred in terms of strength and cost. As the synthetic resin, epoxy resins and polyester resins are preferable in terms of drawing workability, strength, and heat resistance. The hollow cylindrical sleeve of the magnet roll is formed by continuous pultrusion method.
It is manufactured by cutting the FRP pipe to the required length and machining the surface with a lathe.
Since FRP pipes are formed with high precision using a continuous drawing method, surface processing of the outer peripheral surface is not necessarily necessary, and even if surface finishing is performed, it is very easy. Further, since the sleeve made of FRP has appropriate hardness, it is suitable for conveying toner.
磁石ロールのスリーブの外周面の粗面化は、上
記したように表面を切削加工することによつて繊
維基材が表面に露出することにより構成され、繊
維の太さ、混入率および繊維と合成樹脂との切削
抵抗の差などに応じて粗面化状態を変化させるこ
とができる。要すれば、スリーブの外周面の切削
後に、その方向性をなくすために、その外周面に
シヨツト・ブラスト、ヘアブラシ加工等を施こし
てもよい。スリーブの外周面に微小な凹凸が形成
されるので、摩擦係数が大きくなるので、トナー
の搬送能力が増大する。 The roughening of the outer circumferential surface of the sleeve of the magnet roll is achieved by exposing the fiber base material to the surface by cutting the surface as described above, and the roughening of the outer peripheral surface of the sleeve of the magnet roll is achieved by exposing the fiber base material to the surface by cutting the surface as described above. The roughening state can be changed depending on the difference in cutting resistance with the resin. If necessary, after cutting the outer circumferential surface of the sleeve, shot blasting, hair brushing, etc. may be applied to the outer circumferential surface in order to eliminate the directionality. Since minute irregularities are formed on the outer circumferential surface of the sleeve, the coefficient of friction increases, so that the toner conveying ability increases.
必要ならば、スリーブの素材であるFRPの合
成樹脂内に、Al，Fe，Ni，Co，Cuなどの金属粉
末を混入させて、導電率を高めることができる。
トナーは荷電粒子であるから、磁石ロールによる
搬送途上でスパークを発生するおそれがあるが、
スリーブに金属粉末を混入して導電性を持たせ、
かつ導電率を調整することにより、これを防止す
ることができる。 If necessary, metal powders such as Al, Fe, Ni, Co, and Cu can be mixed into the FRP synthetic resin that is the sleeve material to increase electrical conductivity.
Since toner is a charged particle, there is a risk of generating sparks while being transported by magnetic rolls.
Metal powder is mixed into the sleeve to make it conductive.
Moreover, this can be prevented by adjusting the conductivity.
以上のように、この考案による静電現像用磁石
ロールの中空円筒状スリーブは、FRPで形成さ
れかつその外周面が粗面化されているので、加工
が容易で安価に提供でき、かつトナーの搬送能力
が大きい。 As described above, the hollow cylindrical sleeve of the magnet roll for electrostatic development according to this invention is made of FRP and has a roughened outer circumferential surface, so it is easy to process and can be provided at low cost, and it is easy to process toner. Large conveyance capacity.
図面は、静電現像機構を示す断面図である。
１……静電現像用磁石ロール、２……磁石体、
３……中空円筒状スリーブ。
The drawing is a sectional view showing an electrostatic development mechanism. 1... Magnet roll for electrostatic development, 2... Magnet body,
3...Hollow cylindrical sleeve.
Claims (1)
された磁石体とからなる静電現像用磁石ロールに
おいて、中空円筒状スリーブが繊維強化プラスチ
ツクで形成され、かつその外周面が粗面化されて
いる、静電現像用磁石ロール。 In a magnet roll for electrostatic development consisting of a hollow cylindrical sleeve and a magnet disposed within the sleeve, the hollow cylindrical sleeve is made of fiber-reinforced plastic, and the outer peripheral surface thereof is roughened. Magnet roll for electrostatic development.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12850181U JPS5834140U (en) | 1981-08-28 | 1981-08-28 | Magnet roll for electrostatic development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12850181U JPS5834140U (en) | 1981-08-28 | 1981-08-28 | Magnet roll for electrostatic development |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5834140U JPS5834140U (en) | 1983-03-05 |
| JPS6237238Y2 true JPS6237238Y2 (en) | 1987-09-22 |
Family
ID=29922198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12850181U Granted JPS5834140U (en) | 1981-08-28 | 1981-08-28 | Magnet roll for electrostatic development |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5834140U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168822U (en) * | 1984-04-19 | 1985-11-09 | 長田電機工業株式会社 | dental treatment chair |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5131655U (en) * | 1974-08-27 | 1976-03-08 | ||
| JPS521310U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS5361440A (en) * | 1976-11-12 | 1978-06-01 | Hitachi Chem Co Ltd | Shaft for golf club |
| JPS5423028A (en) * | 1977-07-22 | 1979-02-21 | Sumitomo Heavy Industries | Method of controlling movable narrow surface walls of mold for continuous casting |
| JPS556932B2 (en) * | 1971-12-24 | 1980-02-21 | ||
| JPS55149415A (en) * | 1980-02-20 | 1980-11-20 | Toray Ind Inc | Propeller shaft of fiber reinforced plastic |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6339714Y2 (en) * | 1978-06-29 | 1988-10-18 |
-
1981
- 1981-08-28 JP JP12850181U patent/JPS5834140U/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556932B2 (en) * | 1971-12-24 | 1980-02-21 | ||
| JPS5131655U (en) * | 1974-08-27 | 1976-03-08 | ||
| JPS521310U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS5361440A (en) * | 1976-11-12 | 1978-06-01 | Hitachi Chem Co Ltd | Shaft for golf club |
| JPS5423028A (en) * | 1977-07-22 | 1979-02-21 | Sumitomo Heavy Industries | Method of controlling movable narrow surface walls of mold for continuous casting |
| JPS55149415A (en) * | 1980-02-20 | 1980-11-20 | Toray Ind Inc | Propeller shaft of fiber reinforced plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5834140U (en) | 1983-03-05 |
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