JPH0469780B2 - - Google Patents
Info
- Publication number
- JPH0469780B2 JPH0469780B2 JP59064903A JP6490384A JPH0469780B2 JP H0469780 B2 JPH0469780 B2 JP H0469780B2 JP 59064903 A JP59064903 A JP 59064903A JP 6490384 A JP6490384 A JP 6490384A JP H0469780 B2 JPH0469780 B2 JP H0469780B2
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive liquid
- photosensitive
- charge
- filtration
- container
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 27
- 239000000049 pigment Substances 0.000 claims description 18
- 239000011491 glass wool Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000002609 medium Substances 0.000 claims description 3
- 239000006163 transport media Substances 0.000 claims description 3
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 claims description 2
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 claims description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 241000519995 Stachys sylvatica Species 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 241000224489 Amoeba Species 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 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
- 150000007857 hydrazones Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin 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
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- LLBIOIRWAYBCKK-UHFFFAOYSA-N pyranthrene-8,16-dione Chemical compound C12=CC=CC=C2C(=O)C2=CC=C3C=C4C5=CC=CC=C5C(=O)C5=C4C4=C3C2=C1C=C4C=C5 LLBIOIRWAYBCKK-UHFFFAOYSA-N 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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)
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、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。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a method for filtering a photosensitive liquid for electrophotography, and more particularly, 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厚に
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
子が感光液にまざつた状態で導電性基体上に塗布
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、感光層上に残留するトナー
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 to be smooth and to have a uniform thickness. 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. If these secondary agglomerated particles are mixed with a photosensitive liquid and coated on 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 toner remaining on the photosensitive 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ツシ
ユによる感光液の濾過が行われている。ところ
が、感光液自体の粘度のために濾過速度が著しく
遅い。しかも、最も細かな目の635メツシユを用
いても10μm以下の二次凝集粒子の除去は達成さ
れない。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、ステンレスメツ
シユの孔径に関係なくメツシユをすり抜けてしま
うからである。ステンレスメツシユのこの欠点を
解消するために、通常の化学装置に用いられるフ
イ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
たがつて、二次凝集粒子のみを濾別しうるフイル
ターが要求される。 In order to remove secondary agglomerated particles, unpulverized particles, contaminants, and the like from the photosensitive liquid, the photosensitive liquid has conventionally been filtered using a stainless mesh. However, the filtration rate is extremely slow due to the viscosity of the photosensitive liquid itself. Furthermore, even if the 635 mesh with the finest mesh is used, secondary agglomerated particles of 10 μm or less cannot be removed. 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 regardless of the pore size of the stainless steel mesh. In order to overcome this drawback of stainless steel mesh, using a filter used in ordinary chemical equipment can effectively remove the secondary agglomerated particles in the photosensitive solution, but at the same time, it also removes the pigments that are the components of the photosensitive solution. Only the solvent is filtered out. Therefore, there is a need for a filter that can filter out only secondary agglomerated particles.
（発明の目的）
本発明の目的は、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、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 dispersed 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イル
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。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、かつ樹脂マトリツクス中に電荷発
生顔料を分散させた感光液を収容するための容器
と、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。(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 transport 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. Further, a filtration device for implementing the above filtration method is provided with a filtration means, and includes a container for containing a photosensitive liquid in which a charge-generating pigment is dispersed in a resin matrix, and a pressurizer for pressurizing the photosensitive liquid in the container. pressure means, thereby achieving the above object.
（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、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 includes, for example, a photosensitive liquid supply port 11 on the upper side. Below the container 1 is a filtration means 2.
A filtrate outlet 120 is provided further below.
濾過手段２は、例えば、石英ガラスウールフイ
ルター２０で構成される。石英ガラスウールフイ
ルター２０はその電気的およびフアンデルワール
スなどの物理的吸着力によつ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ツクする。
しかも、通常のガラスウールフイルターのように
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。フイルター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。このフイ
ルター２０はステンレスなどのメツシユ板２０上
に載置される。フイルター２０をその上方から支
持板２２で押さえておくとフイルター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。 The filtration means 2 is composed of, for example, a quartz glass wool filter 20. The quartz glass wool filter 20 completely blocks secondary agglomerated particles that may be deformed like an amoeba due to its electrical and physical adsorption forces such as van der Waals.
Moreover, there is no possibility that glass fragments will be generated and mixed into the photosensitive liquid, as is the case with ordinary glass wool filters. 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 20 is placed on a mesh plate 20 made of stainless steel or the like. By pressing the filter 20 from above with the support plate 22, 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、例えば、圧縮空気３０が用い
られる。これは、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、圧縮空気３０による加圧力を増して濾過
速度を上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つてフイルター２０を損傷
してしまう。適切な加圧力は２〜９Kg／cm2の範
囲、好ましくは４〜６Kg／cm2の範囲に設定され
る。その操作は、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内を容器壁に沿つ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。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。 For example, compressed air 30 is used as the pressurizing means 3. This is injected into the container 1 from the compressed air inlet 31 above the container 1, for example. Since there is no direct relationship between the filtration speed and the degree of filtration of the secondary agglomerated particles 41, the filtration efficiency increases if the pressure applied by the compressed air 30 is increased to increase the filtration speed. However, if the pressing force becomes excessive, the filter 20 will be damaged. A suitable pressing force is set in the range of 2 to 9 kg/cm 2 , preferably in the range of 4 to 6 kg/cm 2 . The operation can be performed with the pressure valve 32, for example. 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. 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
帯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, any kind of dispersion for an organic photoconductive band photosensitive layer 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、キナ
クリドン系顔料、ピラントロン系顔料、フタロシ
アニン系顔料、ジスアゾ系顔料、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、例えば、ポリエステル樹
脂、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、ピラゾリン型誘導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。 As the charge-generating pigment, photoconductive organic pigments such as perylene pigments, quinacridone pigments, pyranthrone pigments, phthalocyanine pigments, disazo pigments, and trisazo pigments are used. As the charge transport medium, charge transport resins such as polyvinyl carbazole may be used alone or in combination with other resins that do not themselves have photoconductivity, such as polyester resins, epoxy resins, polycarbonate resins, acrylic resins, etc. , hydrazone derivatives, pyrazoline derivatives, and other low-molecular charge transport substances dispersed in a resin are used.
本発明の濾過装置を通して得た均質な感光液４
０を120φ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つた。 Homogeneous photosensitive liquid 4 obtained through the filtration device of the present invention
0 was coated on an aluminum drum having a diameter of 120 φ by a conventional dipping method, and dried at 100° C. for 1 hour to produce a photoreceptor 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、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, secondary agglomerated particles in the photosensitive liquid can be quickly and effectively removed using a simple device and operation, so pinholes etc. caused by secondary agglomerated particles can be removed. 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イルター、２１
……ステンレスメツシユ板、２２……支持板、３
０……圧縮空気、３１……圧縮空気投入口、３２
……圧力弁。
The 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...Filtering means, 3...
...pressure means, 4...photosensitive liquid, 11...photosensitive liquid supply port, 20...quartz glass wool filter, 21
...Stainless steel mesh plate, 22...Support plate, 3
0...Compressed air, 31...Compressed air inlet, 32
...Pressure valve.
Claims (1)
ーを設け、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。 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項に記載の濾過装置。 ３ 前記感光液が２〜９Kg／cm2で加圧濾過される
特許請求の範囲第１項に記載の濾過装置。 ４ 前記フイルターの開口径が１〜12μmである
特許請求の範囲第１項に記載の濾過装置。[Scope of Claims] 1. A container for containing a photosensitive liquid in which a charge-generating pigment is dispersed in a charge transporting medium, which is provided with a quartz glass wool filter as a filtration means, and pressurizes the photosensitive liquid in the container. A filtration device for an electrophotographic photosensitive liquid, comprising a pressurizing means for 2. The filtration device according to claim 1, wherein the photosensitive liquid has a perylene pigment as a charge generating pigment dispersed in a charge transport medium mainly composed of a polyvinylcarbazole resin. 3. The filtration device according to claim 1, wherein the photosensitive liquid is filtered under pressure at 2 to 9 kg/cm 2 . 4. The filtration device according to claim 1, 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 JPS60208758A (en) | 1985-10-21 |
| JPH0469780B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2714825B2 (en) * | 1988-08-17 | 1998-02-16 | コニカ株式会社 | Electrophotographic photoreceptor manufacturing equipment |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60208758A (en) | 1985-10-21 |
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