JPH03280066A - Positioning device for photosensitive drum - Google Patents
Positioning device for photosensitive drumInfo
- Publication number
- JPH03280066A JPH03280066A JP8213490A JP8213490A JPH03280066A JP H03280066 A JPH03280066 A JP H03280066A JP 8213490 A JP8213490 A JP 8213490A JP 8213490 A JP8213490 A JP 8213490A JP H03280066 A JPH03280066 A JP H03280066A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- coating
- head
- air
- coating head
- 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
- 239000011248 coating agent Substances 0.000 claims abstract description 51
- 238000000576 coating method Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000006748 scratching Methods 0.000 abstract 2
- 230000002393 scratching effect Effects 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000007664 blowing Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- -1 polycyclic aromatic compounds Chemical class 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QSNAVZQFIDCTQI-UHFFFAOYSA-N 1,2,3-trinitro-9h-fluorene Chemical compound C1=CC=C2C(C=C(C(=C3[N+]([O-])=O)[N+]([O-])=O)[N+](=O)[O-])=C3CC2=C1 QSNAVZQFIDCTQI-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 1
- 101710133576 Slit homolog 2 protein Proteins 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
- PGEHNUUBUQTUJB-UHFFFAOYSA-N anthanthrone Chemical compound C1=CC=C2C(=O)C3=CC=C4C=CC=C5C(=O)C6=CC=C1C2=C6C3=C54 PGEHNUUBUQTUJB-UHFFFAOYSA-N 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 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
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、円筒ドラムに感光液を塗布することによって
電子写真感光体を製造する際にその円筒ドラムの位置決
めを図る装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for positioning a cylindrical drum when manufacturing an electrophotographic photoreceptor by applying a photosensitive liquid to the cylindrical drum.
電子写真装置で使用される感光体である有機光導電体感
光ドラムの製造においては、円筒形状のドラムに感光性
の塗布液を塗布する。その塗布に当たっては、円筒ドラ
ムの周囲にスライドホッパーを所定位置に位置決めし、
両者間のクリアランスを周方向に関して一定に保持する
調整作業が必要となる。この場合、所要の塗布層厚はき
わめて薄いため、円筒ドラムか0.1mmずれても周方
向に関し、全体としてみれば塗膜層の膜厚の大きな偏差
要因となる。In manufacturing an organic photoconductor photosensitive drum, which is a photosensitive member used in an electrophotographic apparatus, a photosensitive coating liquid is applied to a cylindrical drum. For application, a slide hopper is positioned at a predetermined position around the cylindrical drum,
Adjustment work is required to maintain a constant clearance between the two in the circumferential direction. In this case, since the required thickness of the coating layer is extremely thin, even a deviation of 0.1 mm from the cylindrical drum causes a large deviation in the thickness of the coating layer as a whole in the circumferential direction.
かかる塗膜層の膜厚偏差があると、円筒ドラムの周方向
で帯電量の変化、感度の不均一、残留電位の変化等の各
種不具合が生じることは周知の事実である。したがって
、円筒ドラムの正確な位置決めが極めて重要となる。It is a well-known fact that such deviations in the thickness of the coating layer cause various problems such as changes in the amount of charge, non-uniform sensitivity, and changes in residual potential in the circumferential direction of the cylindrical drum. Accurate positioning of the cylindrical drum is therefore extremely important.
従来、この種のドラムの位置決め装置としては、たとえ
ば特開昭60−50537号公報に記載のように、支持
部材に回転自在に設けた位置規制コロをドラムの外周囲
に接触させて設けたものである。Conventionally, this type of drum positioning device includes a position regulating roller rotatably provided on a support member and in contact with the outer periphery of the drum, as described in Japanese Patent Application Laid-Open No. 60-50537. It is.
しかしながら、この種の従来装置は、位置規制コロを直
接ドラムに対して接触させながら位置決めするものであ
るので、ドラムに傷がついてしまうという難点があった
。ドラムに傷がつくと、電子写真特性が悪化することは
周知である。However, in this type of conventional device, the positioning roller is placed in direct contact with the drum for positioning, so there is a problem in that the drum may be damaged. It is well known that electrophotographic properties deteriorate if the drum is scratched.
そこで、ドラムに位置決めにあたり、本発明者らは、た
とえばエアを吹き付けて位置決めを行うようにすると、
ドラムの疵付きが防止でき、きわめて有効であるとこを
知見した。Therefore, when positioning the drum, the present inventors decided to perform the positioning by, for example, blowing air.
It has been found that this method is extremely effective in preventing scratches on the drum.
しかるに、第7図のように、ドラム1を順次繋ぎ合わせ
て移動させる過程で塗布ヘッド2から感光液りを塗布す
る場合、水平方向配置のエア吹付ノズル3からのエア圧
によりドラム1の位置決めを行う際に、吐出させたエア
が一旦ドラム1外面に当たった後、一部は上昇して塗布
ヘッド2側に流れ、塗布ヘッド2とドラム1外面との間
隙を抜けて上方に抜けることがある。この場合には、感
光液りの塗布むらや塗布不良となり、円滑な塗布が行わ
れない結果をもたらす。However, as shown in FIG. 7, when the photosensitive liquid is applied from the application head 2 while the drums 1 are successively connected and moved, the positioning of the drum 1 is controlled by the air pressure from the horizontally arranged air blowing nozzle 3. During this process, after the discharged air hits the outer surface of the drum 1, a portion of it rises and flows toward the coating head 2, sometimes passing through the gap between the coating head 2 and the outer surface of the drum 1 and passing upward. . In this case, the photosensitive liquid may be applied unevenly or poorly, resulting in an uneven application.
そこで本発明の主たる課題は、ドラムに疵を付けないで
ドラムの位置決めを行うとともに、塗布ヘッドでの塗布
に対しての影響を排除することにある。Therefore, the main object of the present invention is to position the drum without damaging the drum and to eliminate the influence on the coating by the coating head.
上記課題は、感光ドラム製造に当たり、その円筒ドラム
の外周面にこれを取り囲んでその外周面に塗布液を塗布
ヘッドから塗布する際にドラムの位置決めを行う装置で
あって;
円筒ドラムの未塗布位置または塗布液の塗布済位置にお
いて、吐出口から流体を吹き付けてその流体圧により円
筒ドラムの位置決めを行う吹付手段を設け、かつその吐
出口と塗布ヘッドとの間において、前記吐出口から流体
吐出流をドラム外表面から遠ざける吸引手段を設けたこ
とで解決できる。The above-mentioned problem is a device for positioning the drum when manufacturing a photosensitive drum, surrounding the outer circumferential surface of the cylindrical drum, and applying a coating liquid to the outer circumferential surface from a coating head; Alternatively, at a position where the coating liquid has been applied, spraying means is provided for spraying fluid from a discharge port and positioning the cylindrical drum by the fluid pressure, and between the discharge port and the coating head, the fluid discharged from the discharge port is provided. This problem can be solved by providing suction means to keep the water away from the outer surface of the drum.
本発明では、その外周面に対して流体を吹き付けてその
流体圧により円筒ドラムの位置決めを行う。すなわち、
ドラムの周囲から流体、たとえばエアを吹き付けると、
その吹付圧力により、ドラムの位置が中立化し、もって
ドラムが所定位置に位置決めを図ることができる。In the present invention, the cylindrical drum is positioned by spraying fluid onto its outer peripheral surface and using the fluid pressure. That is,
When a fluid, such as air, is blown around the drum,
The spray pressure neutralizes the position of the drum, thereby making it possible to position the drum at a predetermined position.
しかも、ドラムに機械的接触することがないから、ドラ
ムに傷を付けることを防止できる。Moreover, since there is no mechanical contact with the drum, damage to the drum can be prevented.
他方、エア吹付ノズル3からのエア流が塗布ヘッド2に
流れることを防止すれば、前述の問題が解消できる。そ
こで、第7図に示すように、ノズル3からのエア流が塗
布ヘッド2に向かうことを阻止するために遮断壁4を設
けることが有効である。しかし、現実には遮断壁4の内
周縁がドラムIの外面との間隙が0.1−未満でないと
、その効果が充分でないとともに、かかる狭い間隙であ
るとドラム1の搬送過程での僅かなずれによってドラム
エの外表面に疵を付けやすくなる。On the other hand, if the air flow from the air blowing nozzle 3 is prevented from flowing to the coating head 2, the above-mentioned problem can be solved. Therefore, it is effective to provide a blocking wall 4 to prevent the air flow from the nozzle 3 from flowing toward the coating head 2, as shown in FIG. However, in reality, unless the gap between the inner peripheral edge of the blocking wall 4 and the outer surface of the drum I is less than 0.1, the effect is not sufficient. Misalignment can easily cause scratches on the outer surface of the drum.
これに対して、本発明に従って、ノズル3吐出口と塗布
ヘッド2との間において、吐出口からエア流をドラムI
外表面から遠ざける吸引手段を設けると、遮断壁を設け
ないでも、また遮断壁の内周縁がドラム1外表面から3
11II11以上離間していても、段ムラや液切れなど
の塗布不良を防止できる。In contrast, according to the present invention, between the nozzle 3 outlet and the coating head 2, the air flow is directed from the outlet to the drum I.
If a suction means is provided to keep it away from the outer surface of the drum 1, the inner circumferential edge of the cut-off wall can be moved away from the outer surface of the drum 1 by 3.
Even if the distance is 11II11 or more, coating defects such as uneven coating and liquid shortage can be prevented.
以下本発明を実施例によってさらに詳説する。 The present invention will be explained in more detail below with reference to Examples.
第1図および第2図は第1実施例を示したもので、1は
たとえば中空円筒形等のドラムで、図示しない搬送手段
たとえばドラムの底面をシリンダーなどにより上昇させ
る、あるいは適宜の把持手段により交互把持することに
より、連続的に上昇するようになっている。1 and 2 show a first embodiment, in which 1 is a hollow cylindrical drum, for example, and the bottom surface of the drum is raised by a conveying means (not shown) such as a cylinder, or by an appropriate gripping means. By alternately gripping it, it is made to rise continuously.
2はこのドラム1の外周面に感光液を塗布するための環
状塗布ヘッドで、対地固定に設置され、かつドラムlの
上昇過程で、内面側に開口した流出口から感光液を連続
的に吐出させることにより塗布するものである。Reference numeral 2 denotes an annular coating head for applying photosensitive liquid to the outer circumferential surface of drum 1, which is fixedly installed on the ground and continuously discharges photosensitive liquid from an outlet opening on the inner side during the rising process of drum 1. It is applied by letting it dry.
本発明に用いられる塗布手段としての塗布ヘッドとして
は、ドラムlの外面にこれを取り囲んで配置されドラム
1の外面に塗布液を塗布する基本的構成を有していれば
、特開昭58−189061号、特開昭60−5053
7号などに開示されたものなどを適宜採用できる。As long as the coating head as the coating means used in the present invention has a basic structure that is arranged around the outer surface of the drum 1 and applies a coating liquid to the outer surface of the drum 1, it is possible to No. 189061, JP-A-60-5053
7, etc. can be adopted as appropriate.
この例を第6図に示した。この塗布ヘッド2はスライド
ホッパー型塗布ヘッドである。An example of this is shown in FIG. This coating head 2 is a slide hopper type coating head.
これを説明すると、塗布ヘッド2には、ドラム1側に開
口する塗布液流出口21を有する幅狭の塗布液分配スリ
ット22が水平方向に形成されている。このスリット2
2は液溜ヘッダ23に連通し、この液溜ヘッダ23には
感光液りを圧送ポンプ(図示せず)により供給するよう
になっている。To explain this, a narrow coating liquid distribution slit 22 having a coating liquid outlet 21 opening toward the drum 1 is formed in the coating head 2 in the horizontal direction. This slit 2
2 communicates with a liquid reservoir header 23, and a photosensitive liquid is supplied to this liquid reservoir header 23 by a pressure pump (not shown).
他方、スリット22の塗布液流出口2工の下側には、連
続して下窄まりに傾斜しドラム1の外寸よりやや大なる
寸法で終端をなすように液スライド面25が形成され、
さらに、この液スライド面25の終端より下方に延びて
唇状部26が形成されている。On the other hand, a liquid sliding surface 25 is formed below the second coating liquid outlet of the slit 22 so as to continuously slope downward and terminate at a dimension slightly larger than the outer dimension of the drum 1.
Further, a lip-like portion 26 is formed extending downward from the terminal end of the liquid slide surface 25.
かかる塗布ヘッド2を用いる場合、ドラム1を引き上げ
る過程で、感光液りをスリット22および塗布液流出口
21から押出し、液スライド面25に沿って流下させる
。唇状部26に到った感光液りは、はぼ唇状部26とド
ラム1とのクリアランスに相当する厚みをもってドラム
1の外面に塗布される。When such a coating head 2 is used, in the process of pulling up the drum 1, the photosensitive liquid is pushed out from the slit 22 and the coating liquid outlet 21, and is caused to flow down along the liquid sliding surface 25. The photosensitive liquid that has reached the lip 26 is applied to the outer surface of the drum 1 to a thickness corresponding to the clearance between the lip 26 and the drum 1.
この種の塗布ヘッド2に対して、ドラム1を同軸的に供
給するために、流体圧を利用した位置決め吹付手段が設
けられる。In order to coaxially supply the drum 1 to this type of coating head 2, positioning spraying means using fluid pressure is provided.
第1図および第2図に示す第1実施例では、エアを吹き
付ける吹付ノズル3が、周方向に等間隔で3つ、したが
って120度の間隔をもって水平に配設されている。ま
た、各ノズル3には、図示しないコンプレッサーからの
高圧エアが供給されるようになっており、各ノズル3の
吐出口から均一の吐出量および圧力をもってドラム1の
外周面に向かって高速で吹き付けられる。その結果、ト
ラム1はその細心が、塗布ヘッド2の中心軸に対して同
一に位置決めされる。したがって、塗布ヘッド1からの
感光液はドラムIの外周面に均一な塗布膜厚をもって塗
布されるようになる。In the first embodiment shown in FIGS. 1 and 2, three blowing nozzles 3 for blowing air are arranged horizontally at equal intervals in the circumferential direction, that is, at intervals of 120 degrees. In addition, high-pressure air is supplied to each nozzle 3 from a compressor (not shown), and is sprayed at high speed toward the outer peripheral surface of the drum 1 with a uniform discharge amount and pressure from the discharge port of each nozzle 3. It will be done. As a result, the tram 1 is precisely positioned identically with respect to the central axis of the application head 2. Therefore, the photosensitive liquid from the coating head 1 is applied to the outer peripheral surface of the drum I with a uniform coating thickness.
しかるに、その際、前述のように、各ノズル3からの吐
出エアが塗布ヘッド2側に向かい、塗布不良の要因とな
る。However, in this case, as described above, the air discharged from each nozzle 3 heads toward the coating head 2 side, causing coating defects.
そこで、本発明では、第1図のように、ノズル3と塗布
ヘッド2との間に、仕切り壁5によりトラム1側に臨む
密閉室6を形成し、この密閉室6内に連通して図示しな
い排風ポンプを連結する。Therefore, in the present invention, as shown in FIG. 1, a sealed chamber 6 facing the tram 1 side is formed between the nozzle 3 and the coating head 2 by a partition wall 5, and is communicated with the sealed chamber 6 as shown in the figure. Connect the exhaust pump that does not.
かかる本発明装置において、感光液の塗布の際に排風ポ
ンプを作動させると、ノズル3群から吐出され塗布ヘッ
ド2側に流れるエアが、密閉室6内が負圧になっている
ので、密閉室6外に排風され、もって塗布ヘッド2とド
ラムI外表面との間隙におけるエア抜けが防止される。In such an apparatus of the present invention, when the exhaust pump is operated during coating of the photosensitive liquid, the air discharged from the three nozzle groups and flowing toward the coating head 2 is airtight, since the inside of the sealed chamber 6 is under negative pressure. Air is exhausted to the outside of the chamber 6, thereby preventing air from escaping in the gap between the coating head 2 and the outer surface of the drum I.
したがって、従来にみられる塗布不良が防止される。Therefore, the coating defects that occur in the prior art are prevented.
一方、第7図に関連して述べたように、遮断壁4を設け
ることは有効である。On the other hand, as described in connection with FIG. 7, it is effective to provide the blocking wall 4.
第3図例は、内周縁部分がノズル3側に傾斜したリング
状の遮断壁4がその内縁をドラム1外周面に近接させて
配設するとともに、この遮断壁4と塗布ヘッド2との間
に密閉室6を設けたものである。この場合、ノズル3か
らの吐出エアは一旦ドラム1外表面に衝突した後、上方
に流れるが、大部分のエアは遮断壁4に当たって外方に
逃げるようになる。しかし、遮断壁4の内周縁とドラム
■外表面との離間距離をある程度確保しなければならな
い関係で、一部のエアはその間隙を抜けて塗布ヘット2
側に流れる。しかるに、遮断壁4と塗布ヘッド2との間
に吸引手段が設けられているので、前述と同様に塗布不
良が防止される。なおこの例のように、遮断壁4と吸引
手段との併用を行うと、吸引手段として小型のもので足
りるなどの利点がある。In the example shown in FIG. 3, a ring-shaped blocking wall 4 whose inner peripheral edge portion is inclined toward the nozzle 3 side is disposed with its inner edge close to the outer peripheral surface of the drum 1, and a space between this blocking wall 4 and the coating head 2 is provided. A closed chamber 6 is provided in the chamber. In this case, the air discharged from the nozzle 3 once collides with the outer surface of the drum 1 and then flows upward, but most of the air hits the blocking wall 4 and escapes outward. However, because a certain distance must be maintained between the inner peripheral edge of the blocking wall 4 and the outer surface of the drum, some air escapes through that gap and reaches the coating head 2.
flows to the side. However, since the suction means is provided between the blocking wall 4 and the coating head 2, poor coating can be prevented as described above. Note that, as in this example, when the blocking wall 4 and the suction means are used together, there is an advantage that a small suction means is sufficient.
第4図例は、ノズル3と遮断壁4との間に本発明に係る
吸引手段を設けた例である。The example in FIG. 4 is an example in which the suction means according to the present invention is provided between the nozzle 3 and the blocking wall 4.
第5図は前記各側のように密閉室6を構成することなく
、ドラム1外表面に開口した一つまたは図示のように二
つの吸引リング7に排風機8を連通し、吸引リング7.
7部分で上昇するエアを抜き取るようにしたものである
。In FIG. 5, an air exhaust fan 8 is connected to one or two suction rings 7 as shown, which are opened on the outer surface of the drum 1, without forming a closed chamber 6 as on each side, and the suction rings 7.
The air rising at the 7th part is removed.
なお、ノズル3の周方向の数は複数であれば限定されな
い。Note that the number of nozzles 3 in the circumferential direction is not limited as long as it is plural.
本発明において、ドラム1の軸方向に2つまたはそれ以
上の数の前記例のノズルを配設することができる。この
場合においては1、各ノズルによリドラム1との離間距
離が均一化されるので、結果的にドラムエの傾斜移動を
防止できる。In the present invention, two or more nozzles of the above example can be arranged in the axial direction of the drum 1. In this case, 1. Since the distance between each nozzle and the re-drum 1 is equalized, it is possible to prevent the drum from tilting.
一方、ノズル3の配設位置としては、塗布ヘッド2の下
方のみにノズル3を一つまたは複数設けることなく、あ
るノズルまたは全てのノズルを塗布ヘッド2の上方に設
けてもよい。On the other hand, as for the arrangement position of the nozzles 3, one or more nozzles 3 may not be provided only below the coating head 2, but a certain nozzle or all the nozzles may be provided above the coating head 2.
本発明において、吹付流体としては、エアの外、他の気
体でもよく、さらに液体たとえば水なども用いることが
できる。In the present invention, the spraying fluid may be not only air but also other gases, and liquids such as water may also be used.
本発明は、前述のように、電子写真感光体を製造する際
の塗布装置としてきわめて有効である。As described above, the present invention is extremely effective as a coating device for manufacturing electrophotographic photoreceptors.
この場合の感光液としては、酸化亜鉛や硫化カドミウム
等の無機感光材料、ポリビニルカルバゾールとトリニト
ロフルオレン等の有機感光材料を高分子バインダーに分
散させたものなどを用いることができる。また近年、高
感度化、耐久性向上のために、電荷発生層と電荷輸送層
を積層した機能分離型感光層も用いることができる。In this case, the photosensitive liquid may be one in which an inorganic photosensitive material such as zinc oxide or cadmium sulfide or an organic photosensitive material such as polyvinylcarbazole or trinitrofluorene is dispersed in a polymer binder. Furthermore, in recent years, in order to increase sensitivity and improve durability, functionally separated photosensitive layers in which a charge generation layer and a charge transport layer are laminated can also be used.
たとえば電荷発生層はアゾ顔料、キノン顔料、ペリレン
顔料、フタロシアニン顔料、アンスアンスロン顔料等を
ポリカーボネートなどの高分子バインダーに分散し、電
荷輸送層は多環芳香族化合物、含窒素環式化合物等を高
分子バインダーに分散して得ることができる。電荷発生
層の厚さは、0.01〜10.czm好ましくは0.0
5〜5μmであり、電荷輸送層の厚さは好ましくは5〜
30μmである。For example, the charge generation layer is made by dispersing azo pigments, quinone pigments, perylene pigments, phthalocyanine pigments, anthanthrone pigments, etc. in a polymeric binder such as polycarbonate, and the charge transport layer is made by dispersing polycyclic aromatic compounds, nitrogen-containing cyclic compounds, etc. It can be obtained by dispersing it in a molecular binder. The thickness of the charge generation layer is 0.01 to 10. czm preferably 0.0
The thickness of the charge transport layer is preferably 5 to 5 μm.
It is 30 μm.
感光液の粘度は0.5〜700Cpの範囲で、好ましく
は1〜5oocpの範囲である。The viscosity of the photosensitive liquid is in the range of 0.5 to 700 Cp, preferably in the range of 1 to 5 oocp.
また、電子写真用の中空ドラムとしては、アルミニウム
、ステンレス、導電層が形成されたプラスチック等があ
る。また、先に下引き層や電荷発生層を形成しておいた
ものでもよい。Further, hollow drums for electrophotography include aluminum, stainless steel, plastic on which a conductive layer is formed, and the like. Alternatively, an undercoat layer and a charge generation layer may be formed in advance.
以上の通り、本発明装置によれば、ドラムに疵を付けな
いでドラムの位置決めを行うとともに、塗布ヘッドでの
塗布に対しての影響を排除することができる。As described above, according to the apparatus of the present invention, it is possible to position the drum without causing any scratches on the drum, and to eliminate the influence on the coating by the coating head.
第1図は第1実施例の概略縦断面図、第2図はその平面
図、第3図〜第5図は他の例の概略縦断面図、第6図は
塗布ヘッド例の縦断面図、第7図は本発明に係る吸引手
段を設けない場合の吐出流の塗布層に対する影響の説明
図である。
1・・・円筒ドラム、2・・・塗布ヘッド、3・・・吹
付ノズル、4・・・遮断壁、5・・・仕切り壁、6・・
・密閉室、7・−・吸引ノズル、8・・・排風機。FIG. 1 is a schematic longitudinal sectional view of the first embodiment, FIG. 2 is a plan view thereof, FIGS. 3 to 5 are schematic longitudinal sectional views of other examples, and FIG. 6 is a longitudinal sectional view of an example of a coating head. , FIG. 7 is an explanatory diagram of the influence of the discharge flow on the coating layer when the suction means according to the present invention is not provided. DESCRIPTION OF SYMBOLS 1... Cylindrical drum, 2... Application head, 3... Spray nozzle, 4... Blocking wall, 5... Partition wall, 6...
- Sealed room, 7 - Suction nozzle, 8... Exhaust fan.
Claims (1)
面にこれを取り囲んでその外周面に塗布液を塗布ヘッド
から塗布する際にドラムの位置決めを行う装置であって
; 円筒ドラムの未塗布位置または塗布液の塗布済位置にお
いて、吐出口から流体を吹き付けてその流体圧により円
筒ドラムの位置決めを行う吹付手段を設け、かつその吐
出口と塗布ヘッドとの間において、前記吐出口から流体
吐出流をドラム外表面から遠ざける吸引手段を設けたこ
とを特徴とする感光ドラムの位置決め装置。(1) A device for positioning the drum when manufacturing a photosensitive drum, surrounding the outer circumferential surface of the cylindrical drum and applying a coating liquid to the outer circumferential surface from a coating head; A spraying means for positioning the cylindrical drum by spraying fluid from a discharge port at a position where the coating liquid has been applied is provided, and a fluid discharge flow from the discharge port is provided between the discharge port and the coating head. A photosensitive drum positioning device comprising a suction means for moving the drum away from the outer surface of the drum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8213490A JP2811222B2 (en) | 1990-03-29 | 1990-03-29 | Photosensitive drum positioning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8213490A JP2811222B2 (en) | 1990-03-29 | 1990-03-29 | Photosensitive drum positioning device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03280066A true JPH03280066A (en) | 1991-12-11 |
JP2811222B2 JP2811222B2 (en) | 1998-10-15 |
Family
ID=13765944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8213490A Expired - Lifetime JP2811222B2 (en) | 1990-03-29 | 1990-03-29 | Photosensitive drum positioning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2811222B2 (en) |
-
1990
- 1990-03-29 JP JP8213490A patent/JP2811222B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2811222B2 (en) | 1998-10-15 |
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