JPH03274566A - Positioning device for photosensitive drum - Google Patents
Positioning device for photosensitive drumInfo
- Publication number
- JPH03274566A JPH03274566A JP7634390A JP7634390A JPH03274566A JP H03274566 A JPH03274566 A JP H03274566A JP 7634390 A JP7634390 A JP 7634390A JP 7634390 A JP7634390 A JP 7634390A JP H03274566 A JPH03274566 A JP H03274566A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- positioning
- spraying
- cylindrical drum
- coating
- 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 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000006748 scratching Methods 0.000 abstract 2
- 230000002393 scratching effect Effects 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 239000000049 pigment Substances 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 3
- 239000007921 spray Substances 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
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- -1 polycyclic aromatic compounds Chemical class 0.000 description 2
- 230000035945 sensitivity Effects 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
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 230000000630 rising effect Effects 0.000 description 1
- 101150005399 sod2 gene Proteins 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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、円筒形状のドラム基体に感
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、円筒ドラムが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 base. In applying the coating, it is necessary to position a slide hopper at a predetermined position around the cylindrical drum and 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 if the cylindrical drum shifts by 0.1 mm, it 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.
一方、ドラムに位置決めにあたり、ドラムの軸方向の一
個所のみで位置決めを行うと、たとえば第８図のように
、ドラム１の外周面に対向して周方向にたとえば３つの
エア吐出ノズル３°を設けた場合、同図白抜き矢印方向
に対しては、位置ずれを生じることが多く、もって周方
向に均一なりリアランスを保持できがたい。On the other hand, when positioning the drum, if positioning is performed only at one location in the axial direction of the drum, for example, as shown in FIG. When provided, positional deviation often occurs in the direction of the white arrow in the figure, making it difficult to maintain uniform clearance in the circumferential direction.
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、周方向に均一なりリ
アランスを保持させることにある。Therefore, the main object of the present invention is to position the drum without damaging the drum and to maintain uniform clearance in the circumferential direction.
上記課題は、感光ドラム製造に当たり、その円筒ドラム
基体の外周面にこれを取り囲んでその外周面に塗布液を
塗布する際にドラム基体の位置決めを行う装置であって
；
円筒ドラム基体の未塗布位置または塗布液の塗布済位置
において、その外周面に対してその周方向に実質的に連
続した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たことで解決
される。The above-mentioned problem is an apparatus for positioning a drum base when coating a coating liquid on the outer circumferential surface of a cylindrical drum base by surrounding the outer circumferential surface of the cylindrical drum base during manufacturing of a photosensitive drum; Alternatively, the problem can be solved by providing a spraying means that sprays fluid from discharge ports that are substantially continuous in the circumferential direction onto the outer circumferential surface of the coating liquid at the position where the coating liquid has been applied, and positions the cylindrical drum using the fluid pressure. Ru.
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、位置決めに当たり、ドラムの外周面に対してその
周方向に実質的に連続した吐出口から流体を吹き付けて
位置決めを行うので、周方向に均一な間隙を保持できる
。On the other hand, since positioning is performed by spraying fluid onto the outer circumferential surface of the drum from ejection ports that are substantially continuous in the circumferential direction, a uniform gap can be maintained in the circumferential direction.
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〜第４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基体（以下単にドラムともい
う）で、図示しない搬送手段たとえばトラム基体の底面
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 to 4 show a first embodiment, in which 1 is a drum base (hereinafter also simply referred to as a drum) having a hollow cylindrical shape, for example. It is made to rise continuously by raising it or by alternately holding it with a suitable holding means.
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
状塗布ヘットで、対地固定に設置され、かつドラム１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 fixed to 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へ・ソドとし
ては、ドラムの外面にこれを取り囲んで配置されドラム
の外面に塗布液を塗布する基本的構成を宵していれば、
特開昭５８−１８９０６１号、特開昭６０−５０５３７
号などに開示されたものなどを適宜採用できる。The coating means used in the present invention has a basic structure that is arranged around the outer surface of the drum and applies the coating liquid to the outer surface of the drum.
JP-A-58-189061, JP-A-60-50537
The information disclosed in the No. 1, etc. may be adopted as appropriate.
この例を第７図に示した。この塗布へ・ソド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. For this application, Sod 2 is a slide hopper type application head.
これを説明すると、塗布ヘッド２には、トラム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 tram 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２１の下側には、連
続して下窄まりに傾斜しトラム１の外寸よりやや犬なる
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 slide surface 25 is formed below the coating liquid outlet 21 of the slit 22 so as to continuously slope downward and terminate at a size slightly larger than the outer size of the tram 1.
Further, a lip-like portion 26 is formed extending downward from the terminal end of the liquid slide surface 25.
かかる塗布ヘット２を用いる場合、トラム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トラム
ｌの外面に塗布される。When such a coating head 2 is used, in the process of pulling up the tram 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 tram l in 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実施例では、エアを吹き付けるリング状の吹付ノズ
ル３か、塗布ヘッド２の中心軸と同軸的に配設されてい
る。さらに、ノズル３の内面側には、周方向に連続する
スリット３ａが水平方向に開口して形成されている。ノ
ズル３には、コンプレッサー４からの高圧エアが供給さ
れるようになっており、ノズル３のスリット３ａから均
一の吐出量および圧力をもってドラムｌの外周面に向か
って高速で吹き付けられる。その結果、ドラム１はその
軸心が、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
ム基体１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, a ring-shaped spray nozzle 3 for spraying air is arranged coaxially with the center axis of the coating head 2. Further, on the inner surface side of the nozzle 3, a slit 3a that is continuous in the circumferential direction is formed and opens in the horizontal direction. High-pressure air is supplied to the nozzle 3 from a compressor 4, and is blown at high speed toward the outer peripheral surface of the drum 1 from the slit 3a of the nozzle 3 with a uniform discharge amount and pressure. As a result, the axial center of the drum 1 is positioned identically with respect to the central axis of the coating head 2. Therefore, the photosensitive liquid from the coating head 1 is applied to the outer peripheral surface of the drum base 1 with a uniform coating thickness.
第５図は、ドラム基体ｌの軸方向に２つのリング状ノズ
ル３．３を配設した例で、この場合においては、各ノズ
ル３．３によりドラム基体１との離間距離が均一化され
るので、結果的にドラム基体１の傾斜移動を防止できる
。また、本発明において、さらに軸方向の異なる位置の
１つまたは複数のノズル３を付加することもできる。FIG. 5 shows an example in which two ring-shaped nozzles 3.3 are arranged in the axial direction of the drum base l. In this case, each nozzle 3.3 equalizes the distance from the drum base 1. As a result, tilting movement of the drum base 1 can be prevented. Furthermore, in the present invention, one or more nozzles 3 at different positions in the axial direction can be added.
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。この塗布ヘッド２の上方に設ける吐出ノズ
ル３については、感光液が塗布された後のドラム１に対
してエアが吹き付けられることになる。またその際、感
光液の粘度が高いか、ある程度感光液が乾燥した状態の
位置を選定することが望ましい。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. Air is blown from the discharge nozzle 3 provided above the coating head 2 onto the drum 1 after the photosensitive liquid has been applied. Further, in this case, it is desirable to select a position where the viscosity of the photosensitive liquid is high or where the photosensitive liquid is dry to some extent.
さらに、第６図のように、ノズル３は塗布ｌ＼ラッドに
一体または水平方向位置調節自在に取り付けることがで
きる。Furthermore, as shown in FIG. 6, the nozzle 3 can be attached to the coating rad either integrally or with its position adjustable in the horizontal direction.
他方、上記各側は、本発明にいう吐出口としてのスリッ
ト３ａが周方向に連続しているが、第８図で示したノズ
ル自体は分割されているとき、その各ノズルを著しく多
数、たとえば移動中心軸心と各ノズルの吐出方向とのな
す角度が、１５度以下であれば、実質的に連続した吐出
口としてみなすことができるので、この態様も本発明に
含まれる。On the other hand, on each side, the slits 3a, which serve as discharge ports according to the present invention, are continuous in the circumferential direction, but when the nozzle itself shown in FIG. If the angle between the movement center axis and the discharge direction of each nozzle is 15 degrees or less, it can be regarded as a substantially continuous discharge port, and this aspect is also included in the present invention.
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、０．０１〜１０μｍ好ましくは０．０５〜
５μｍであり、電荷輸送層の厚さは好ましくは５〜３０
μｍ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 μm, preferably 0.05 to 10 μm.
5 μm, and the thickness of the charge transport layer is preferably 5 to 30 μm.
It is μm.
感光液の粘度は０．５〜７００ｃｐの範囲で、好ましく
は１〜５００ｃｐ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 500 cp.
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、ドラムに対して非接
触の状態で位置決めを行うことができ、もってドラムに
傷を付けることを防止でき、しかも正確な位置決めが容
易となる。さらに、特に本発明においては、周方向に関
して均一な間隙を保持できる。As described above, according to the apparatus of the present invention, positioning can be performed without contacting the drum, thereby preventing damage to the drum, and facilitating accurate positioning. Furthermore, especially in the present invention, uniform gaps can be maintained in the circumferential direction.
第１図は本発明に係る位置決め装置の第１実施例の概要
を示す縦断面図、第２図は斜視図、第３図はその要部縦
断面図、第４図は水平面図、第５図は他の例の縦断面図
、第６図はノズルの取付例の縦断面図、第７図は塗布ヘ
ッド例の縦断面図、第８図は比較例の水平断面図である
。
１・・・円筒ドラム基体、２・・・塗布ヘッド、３・・
・リング状ノズル、３ａ・・・スリ・ソト。FIG. 1 is a vertical sectional view showing an outline of a first embodiment of the positioning device according to the present invention, FIG. 2 is a perspective view, FIG. 3 is a longitudinal sectional view of the main part thereof, FIG. 6 is a longitudinal sectional view of another example, FIG. 6 is a longitudinal sectional view of an example of nozzle attachment, FIG. 7 is a longitudinal sectional view of an example coating head, and FIG. 8 is a horizontal sectional view of a comparative example. 1... Cylindrical drum base, 2... Application head, 3...
・Ring-shaped nozzle, 3a... pickpocket.
Claims (1)
外周面にこれを取り囲んでその外周面に塗布液を塗布す
る際にドラム基体の位置決めを行う装置であつて； 円筒ドラム基体の未塗布位置または塗布液の塗布済位置
において、その外周面に対してその周方向に実質的に連
続した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 base when coating a coating liquid on the outer circumferential surface of the cylindrical drum base by encircling the outer circumferential surface of the cylindrical drum base during manufacturing of the photosensitive drum; The cylindrical drum is characterized by being provided with a spraying means for spraying fluid from discharge ports that are substantially continuous in the circumferential direction onto the outer circumferential surface at a position where the coating liquid has been applied, and positioning the cylindrical drum by the fluid pressure. Photosensitive drum positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7634390A JP2811217B2 (en) | 1990-03-26 | 1990-03-26 | Photosensitive drum positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7634390A JP2811217B2 (en) | 1990-03-26 | 1990-03-26 | Photosensitive drum positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03274566A true JPH03274566A (en) | 1991-12-05 |
| JP2811217B2 JP2811217B2 (en) | 1998-10-15 |
Family
ID=13602717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7634390A Expired - Lifetime JP2811217B2 (en) | 1990-03-26 | 1990-03-26 | Photosensitive drum positioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2811217B2 (en) |
-
1990
- 1990-03-26 JP JP7634390A patent/JP2811217B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2811217B2 (en) | 1998-10-15 |
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