JPS60208758A - Method and device for filtering electrophotographic sensitive solution - Google Patents
Method and device for filtering electrophotographic sensitive solutionInfo
- Publication number
- JPS60208758A JPS60208758A JP6490384A JP6490384A JPS60208758A JP S60208758 A JPS60208758 A JP S60208758A JP 6490384 A JP6490384 A JP 6490384A JP 6490384 A JP6490384 A JP 6490384A JP S60208758 A JPS60208758 A JP S60208758A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive liquid
- filtering
- photosensitive
- filter
- filtration
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
- G03G5/0525—Coating methods
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】 （技術分野） 本発明は、電子写真用感光液の濾過方法、特に。[Detailed description of the invention] (Technical field) The present invention relates to a method for filtering a photosensitive liquid for electrophotography, particularly.
感光液中に生じる二次凝集粒子を迅速、簡単かつ効果的
に除去する方法およびその装置に関する。The present invention relates to a method and apparatus for quickly, simply and effectively removing secondary agglomerated particles generated in a photosensitive liquid.
（従来技術）
鮮明な電子写真を得るためには、電子写真用感光体は均
一に帯電されねばならない。そのためには感光層が導電
性基体表面に平滑でかつ均等ＪＶに形成されていること
が必須の要件である。感光層の形成にあたり無機・有機
の各種の感光材料が知られているが、その中で電荷発生
顔料、電荷輸送媒質を主成分としてなる感光層は、その
感光液調製において、ボールミルなどを用いて顔料など
の粒子を微細状に粉砕し粗大粒子の混在を防止する手段
がとられている。この分散過程で感光液には顔料などの
二次凝集粒子が生じ、これが均一な感光層の形成を不可
能にしている。この二次凝集粒子が感光液にまざった状
態で導電性基体」二に塗布され感光層を構成すると、ピ
ンホールによる白抜けやトナー付着による地肌汚れの原
因となる。電子写真工程において、窓層層上に残留する
ｉ・ナーがクリーニングブレードなどによりかき落とさ
れるとき、この二次凝集粒子も同時にかき落とされて感
光層にくぼみが生じる。このくぼみが電子写真のピンホ
ールによる白抜けとなる。また、二次凝集粒子の一部が
感光層表面から突出しているとき、この突出部のまわり
にトナーが付着し地肌汚れの原因となる。(Prior Art) In order to obtain clear electrophotography, an electrophotographic photoreceptor must be uniformly charged. For this purpose, it is essential that the photosensitive layer be formed on the surface of the conductive substrate in a smooth and uniform manner. Various inorganic and organic photosensitive materials are known for forming photosensitive layers. Among them, photosensitive layers containing charge-generating pigments and charge-transporting media as main components are prepared using a ball mill or the like in the preparation of photosensitive liquids. Measures have been taken to crush particles such as pigments into fine particles to prevent the mixing of coarse particles. During this dispersion process, secondary agglomerated particles such as pigments are generated in the photosensitive liquid, which makes it impossible to form a uniform photosensitive layer. When these secondary agglomerated particles are mixed in a photosensitive liquid and applied to a conductive substrate to form a photosensitive layer, they cause white spots due to pinholes and background stains due to toner adhesion. In the electrophotographic process, when the i-ner remaining on the window layer is scraped off by a cleaning blade or the like, the secondary agglomerated particles are also scraped off at the same time, creating depressions in the photosensitive layer. These depressions become white spots due to pinholes in electrophotography. Furthermore, when a portion of the secondary agglomerated particles protrudes from the surface of the photosensitive layer, toner adheres around this protrusion, causing background stains.
感光液に生じるこの種の二次凝集粒子は、それゆえ、鮮
明な電子写真を得るうえで大きな障害である。This type of secondary agglomerated particles occurring in the photosensitive solution is therefore a major hindrance to obtaining clear electrophotography.
感光液中の二次凝集粒子や未粉砕粒子や汚染物などを除
去するべく、従来からステンレスメソシュによる感光液
の濾過が行われている。ところが。In order to remove secondary agglomerated particles, unpulverized particles, contaminants, and the like from the photosensitive liquid, filtering of the photosensitive liquid using a stainless mesh has been conventionally performed. However.
感光液自体の粘度のために濾過速度が著しく遅い。The filtration rate is extremely slow due to the viscosity of the photosensitive liquid itself.
しかも、最も細かな目の６３５メツシユを用いても１０
μｍ以下の二次凝集粒子の除去は達成されない。Moreover, even with the finest mesh of 635 meshes, it is still 10
Removal of sub-μm secondary agglomerated particles is not achieved.
その理由は、二次凝集粒子はその形状が一定せず状況に
応じて変形して、ステンレスメソシュの孔径に関係なく
メソシュをすり抜ＬＪでしまうからである。ステンレス
メソシュのこの欠点を解消するために２通常の化学装置
に用いられるフィルターを使用すると、感光液中の二次
凝集粒子は効果的に除去されうるが同時に感光液成分の
顔料までも除去され溶媒だけが濾別されてくる。したが
って。The reason for this is that the shape of the secondary agglomerated particles is not constant and deforms depending on the situation, so that they slip through the mesh and end up in the LJ regardless of the pore size of the stainless steel mesh. In order to overcome this drawback of stainless steel mesh, 2. If a filter used in ordinary chemical equipment is used, secondary agglomerated particles in the photosensitive solution can be effectively removed, but at the same time, the pigments in the photosensitive solution can also be removed. Only the solvent is filtered out. therefore.
二次凝集粒子のみを濾別しうるフィルターが要求される
。A filter that can filter out only secondary agglomerated particles is required.
（発明の目的）
本発明の目的は１分散型感光液中の二次凝集粒子のみを
迅速、簡単かつ効果的に除去しうる方法を提供すること
にある。本発明の他の目的は１本発明方法を実施しうる
濾過装置を提供することにある。(Objective of the Invention) An object of the present invention is to provide a method capable of quickly, simply and effectively removing only secondary agglomerated particles in a monodisperse type photosensitive liquid. Another object of the present invention is to provide a filtration device capable of carrying out the method of the present invention.
（発明の構成）
本発明濾過方法は電荷輸送媒質中に電荷発生顔料を分散
させた感光液を石英ガラスウールフィルターを設けた濾
過容器に収容し、該感光液を加圧しつつ該感光液中の二
次凝集粒子を濾別することを包含し、そのことにより上
記目的が達成される。(Structure of the Invention) In the filtration method of the present invention, a photosensitive liquid in which a charge-generating pigment is dispersed in a charge transporting medium is placed in a filtration container equipped with a quartz glass wool filter, and the photosensitive liquid is pressurized. The method includes filtering out secondary agglomerated particles, thereby achieving the above object.
また、上記濾過方法を実施する濾過装置は濾過手段を設
け、かつ樹脂マトリックス中に電荷発生顔料を分散させ
た感光液を収容するための容器と。Further, a filtration device for carrying out the above filtration method is provided with a filtration means and a container for accommodating a photosensitive liquid in which a charge generating pigment is dispersed in a resin matrix.
該容器内の感光液を加圧するための加圧手段とを備え、
そのことにより上記目的が達成される。and a pressurizing means for pressurizing the photosensitive liquid in the container,
This achieves the above objective.
（実施例） 以下に本発明を実施例について述べる。(Example) The present invention will be described below with reference to examples.
図は本発明方法を実施するときに用いられる濾過装置の
一例を示す。この装置は感光液を濾過する濾過容器１と
これに連結される加圧手段３とを有する。容器１は１例
えば、上方に感光液供給口１１を備えている。容器１の
下方には濾過手段２そしてそのさらに下方に濾液流出口
１２０が設けられている。The figure shows an example of a filtration device used when carrying out the method of the present invention. This device has a filter container 1 for filtering a photosensitive liquid and a pressurizing means 3 connected thereto. The container 1 is provided with, for example, a photosensitive liquid supply port 11 on the upper side. A filtration means 2 is provided below the container 1, and a filtrate outlet 120 is provided further below.
濾過手段２は２例えば１石英ガラスウールフィルター２
０で構成される。石英ガラスウールフィルター２０はそ
の電気的およびファンデルワールスなどの物理的吸着力
によってアメーバのように変形しうる二次凝集粒子を完
全にブロックする。しかも１通常のガラスウールフィル
ターのようにガラスの破片が発生しこれが感光液中に混
入するということがない。フィルター２０の開口径は必
ずしも重要ではないが通常１〜１２μｍの範囲で使用さ
れる。好ましくは１〜８μｍである。このフィルター２
０はステンレスなどのメッシュ板２０上に載置される。The filtration means 2 is 2 e.g. 1 quartz glass wool filter 2
Consists of 0. The quartz glass wool filter 20 completely blocks secondary agglomerated particles that can be deformed like an amoeba due to its electrical and physical adsorption forces such as van der Waals. Moreover, unlike ordinary glass wool filters, glass fragments are not generated and mixed into the photosensitive solution. Although the opening diameter of the filter 20 is not necessarily important, it is usually used in the range of 1 to 12 μm. Preferably it is 1 to 8 μm. This filter 2
0 is placed on a mesh plate 20 made of stainless steel or the like.
フィルター２０をその上方から支持板２２で押さえてお
くとフィルター２０は安定して載置されうる。上記の濾
過手段２は容器１内にあればその設置位置には特に限定
されない。If the filter 20 is held down by the support plate 22 from above, the filter 20 can be placed stably. The installation position of the above-mentioned filtering means 2 is not particularly limited as long as it is inside the container 1.
加圧手段３には２例えば、圧縮空気３０が用いられる。For example, compressed air 30 is used as the pressurizing means 3.
これは１例えば容器１上方の圧縮空気投入口３１から容
器１内へ投入される。濾過速度と二次凝集粒子４１の濾
別度合いとは直接関係がないため。This air is injected into the container 1 from, for example, a compressed air inlet 31 above the container 1. This is because there is no direct relationship between the filtration speed and the degree of filtration of the secondary agglomerated particles 41.
圧縮空気３０による加圧力を増して濾過速度を−しげれ
ば濾過能率が上がる。しかし、加圧力が過度になるとか
えってフィルター２０を損傷してしまう。If the pressure applied by the compressed air 30 is increased to lower the filtration rate, the filtration efficiency will increase. However, if the pressurizing force becomes excessive, the filter 20 will be damaged.
適切な加圧力は２〜９ ｋｇ ／ ｃ＋Ｊの範囲、好ま
しくは４〜６ ｋｇ ／ ｃｒＡの範囲に設定される。A suitable pressing force is set in the range of 2-9 kg/c+J, preferably in the range of 4-6 kg/crA.
その操作は。What is the operation?
例えば、圧力弁３２で行われうる。加圧手段３としては
、圧縮空気３０の代わりに容器１内を容器壁に沿って移
動する加圧シリンダーを用いることもできる。このとき
の加圧力も上記範囲に設定される。For example, this can be done with a pressure valve 32. As the pressurizing means 3, a pressurizing cylinder that moves inside the container 1 along the container wall can also be used instead of the compressed air 30. The pressing force at this time is also set within the above range.
感光液４を減圧手段で濾過することは、感光液中の溶剤
が沸騰して揮発するおそれがあるため、好ましくない。It is not preferable to filter the photosensitive liquid 4 using a vacuum means because the solvent in the photosensitive liquid may boil and volatilize.
感光液４としては、あらゆる種類の有機光導電体感光層
用の分散液が使用されうる。感光層としては、導電性基
体表面に電荷発生顔料の層とその上に電荷輸送媒質の層
を設けた機能分散型の有機感光層や、基体表面に電荷発
生顔料の電荷輸送媒質への分散体の層を設けてなる有機
感光層がある。As the photosensitive liquid 4, all kinds of dispersions for organic photoconductor photosensitive layers can be used. The photosensitive layer may be a functionally dispersed organic photosensitive layer with a layer of charge-generating pigment on the surface of a conductive substrate and a layer of charge-transporting medium thereon, or a dispersion of a charge-generating pigment in a charge-transporting medium on the surface of the substrate. There is an organic photosensitive layer provided with a layer of.
電荷発生顔料としては、ペリレン系顔料１キナクリドン
系顔料、ビラントロン系顔料、フタロシアニン系顔料、
ジスアヅ系顔料、トリスアゾ系顔料等の光導電性有機顔
料が使用される。電荷輸送媒質としては、ポリビニルカ
ルバゾールのような電荷輸送性樹脂を単独もしくは他の
それ自体光導電性を有しない樹脂２例えば、ポリエステ
ル樹脂。Examples of charge-generating pigments include perylene pigments, quinacridone pigments, vilanthrone pigments, phthalocyanine pigments,
Photoconductive organic pigments such as disazo pigments and trisazo pigments are used. As the charge transport medium, a charge transport resin such as polyvinylcarbazole or other resins which do not have photoconductivity per se may be used, such as polyester resin.
エポキシ樹脂、ポリカーボネート樹脂、アクリル樹脂な
どと組合わせたものや、ヒドラゾン系誘導体、ピラゾリ
ン型誘専体等の低分子電荷輸送物質を樹脂中に分散させ
たものが使用される。Used are combinations with epoxy resins, polycarbonate resins, acrylic resins, etc., and resins in which low-molecular charge transport substances such as hydrazone derivatives and pyrazoline derivatives are dispersed.
本発明の濾過装置を通して得た均質な感光液４０を１２
０φの径を有するアルミニウム製ドラムに通常の浸漬方
法により塗布し、１００℃で１時間の乾燥を行い乾燥後
の層厚が均一に１２μｍの感光体ドラムを作製した。そ
の表面は円滑で、これを顕微鏡観察しても粒子の存在は
認められなかった。The homogeneous photosensitive liquid 40 obtained through the filtration device of the present invention is
The coating was applied to an aluminum drum having a diameter of 0φ by a normal dipping method, and dried at 100° C. for 1 hour to produce a photosensitive drum having a uniform layer thickness of 12 μm after drying. Its surface was smooth, and no particles were observed when it was observed under a microscope.
（発明の効果）
本発明によれば５ このように、簡単な装置と操作によ
り感光液中の二次凝集粒子が迅速かつ効果的に除去され
るため、二次凝集粒子に起因したピンホールなどの発生
が皆無の感光体が得られる。(Effects of the Invention) According to the present invention, as described above, the secondary agglomerated particles in the photosensitive liquid can be quickly and effectively removed using a simple device and operation, so that pinholes caused by the secondary agglomerated particles can be removed easily. A photoreceptor can be obtained in which there is no generation of .
図は本発明の濾過装置の一実施例を示す要部断面図であ
る。
１・・・感光液濾過容器、２・・・濾過手段、３・・・
加圧手段、４・・・感光液、１１・・・感光液供給口、
２０・・・石英ガラスウールフィルター、２１・・・
ステンレスメツシュ板、２２・・・支持板、３０・・・
圧縮空気、３１・・・圧縮空気投入口、３２・・・圧力
弁。
以上
出願人 三田工業株式会社
代理人 弁理士 山本秀策
２０The figure is a sectional view of essential parts showing an embodiment of the filtration device of the present invention. 1... Photosensitive liquid filtration container, 2... Filtration means, 3...
Pressurizing means, 4... Photosensitive liquid, 11... Photosensitive liquid supply port,
20... Quartz glass wool filter, 21...
Stainless steel mesh plate, 22...Support plate, 30...
Compressed air, 31... Compressed air inlet, 32... Pressure valve. Applicant Sanda Kogyo Co., Ltd. Agent Patent Attorney Shusaku Yamamoto 20
Claims (1)
を石英ガラスウールフィルターを設けた濾過容器に収容
し、該感光液を加圧しつつ該感光液中の二次凝集粒子を
濾別することを包含する電子写真用感光液の濾過方法。 ２′、前記感光液がポリビニルカルバゾール系樹脂を主
体とする電荷輸送媒質中に電荷発生顔料としてペリレン
系顔料を分散させてなる特許請求の範囲第１項に記載の
濾過方法。 ３、前記感光液が２〜９ ｋｇ ／ ｃｔＡで加圧濾過
される特許請求の範囲第１項に記載の濾過方法。 ４、前記フィルターの開口径が１〜１２μｍである特許
請求の範囲第１項に記載の濾過方法。 ５、濾過手段を設け、かつ電荷輸送媒質中に電荷発生顔
料を分散させた感光液を収容するための容器と、該容器
内の感光液を加圧するための加圧手段とを備えた電子写
真用感光液の濾過装置。 ６、前記濾過手段が石英ガラスウールフィルターを包含
する特許請求の範囲第５項に記載の濾過装置。 ７、前記感光液がポリビニルカルバゾール系樹脂を主体
とする電荷輸送媒質中に電荷発生顔料としてペリレン系
顔料を分散させてなる特許請求の範囲第５項に記載の濾
過装置。 ８、前記感光液が２〜９ ｋｇ ／ ｃｎｌで加圧濾過
される特許請求の範囲第５項に記載の濾過装置。 ９、前記フィルターの開口径が１〜１２μｍである特許
請求の範囲第６項に記載の濾過装置。[Scope of Claims] (2) A photosensitive liquid in which a charge-generating pigment is dispersed in a heavy charge transport medium is placed in a filter container equipped with a quartz glass wool filter, and while the photosensitive liquid is pressurized, secondary A method for filtering a photosensitive liquid for electrophotography, which includes filtering out aggregated particles. 2'. The filtration method according to claim 1, wherein the photosensitive liquid has a perylene pigment as a charge generating pigment dispersed in a charge transporting medium mainly composed of a polyvinylcarbazole resin. 3. The filtration method according to claim 1, wherein the photosensitive liquid is filtered under pressure at 2 to 9 kg/ctA. 4. The filtration method according to claim 1, wherein the filter has an opening diameter of 1 to 12 μm. 5. An electrophotographic device equipped with a filtration means and a container for accommodating a photosensitive liquid in which a charge-generating pigment is dispersed in a charge transport medium, and a pressurizing means for pressurizing the photosensitive liquid in the container. Filtration device for photosensitive liquid. 6. The filtration device according to claim 5, wherein the filtration means includes a quartz glass wool filter. 7. The filtration device according to claim 5, wherein the photosensitive liquid has a perylene pigment dispersed as a charge generating pigment in a charge transport medium mainly composed of a polyvinylcarbazole resin. 8. The filtering device according to claim 5, wherein the photosensitive liquid is filtered under pressure at 2 to 9 kg/cnl. 9. The filtration device according to claim 6, wherein the filter has an opening diameter of 1 to 12 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6490384A JPS60208758A (en) | 1984-03-31 | 1984-03-31 | Method and device for filtering electrophotographic sensitive solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6490384A JPS60208758A (en) | 1984-03-31 | 1984-03-31 | Method and device for filtering electrophotographic sensitive solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60208758A true JPS60208758A (en) | 1985-10-21 |
| JPH0469780B2 JPH0469780B2 (en) | 1992-11-09 |
Family
ID=13271484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6490384A Granted JPS60208758A (en) | 1984-03-31 | 1984-03-31 | Method and device for filtering electrophotographic sensitive solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60208758A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0252012A (en) * | 1988-08-17 | 1990-02-21 | Konica Corp | Filter method and its device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139909A (en) * | 1982-02-15 | 1983-08-19 | Shibuya Kogyo Co Ltd | Transport apparatus |
| JPS6061756A (en) * | 1983-09-14 | 1985-04-09 | Canon Inc | Apparatus for producing electrophotographic sensitive body |
-
1984
- 1984-03-31 JP JP6490384A patent/JPS60208758A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139909A (en) * | 1982-02-15 | 1983-08-19 | Shibuya Kogyo Co Ltd | Transport apparatus |
| JPS6061756A (en) * | 1983-09-14 | 1985-04-09 | Canon Inc | Apparatus for producing electrophotographic sensitive body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0252012A (en) * | 1988-08-17 | 1990-02-21 | Konica Corp | Filter method and its device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0469780B2 (en) | 1992-11-09 |
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