JPS63315171A - Drum coating method - Google Patents
Drum coating methodInfo
- Publication number
- JPS63315171A JPS63315171A JP14988187A JP14988187A JPS63315171A JP S63315171 A JPS63315171 A JP S63315171A JP 14988187 A JP14988187 A JP 14988187A JP 14988187 A JP14988187 A JP 14988187A JP S63315171 A JPS63315171 A JP S63315171A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- coating liquid
- coating fluid
- space
- immersed
- 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.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 81
- 239000011248 coating agent Substances 0.000 claims abstract description 73
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract 8
- 239000002904 solvent Substances 0.000 description 10
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 206010070834 Sensitisation Diseases 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000008313 sensitization Effects 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)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は１例えば円筒状のドラム外周面に感光性物質を
含有する塗布液を塗布して、該塗布液を乾燥させること
により電子写真感光体ドラムを製造する場合等に実施さ
れるドラム塗布方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides electrophotographic sensitization by applying a coating liquid containing a photosensitive substance to the outer peripheral surface of a cylindrical drum, for example, and drying the coating liquid. The present invention relates to a drum coating method used when manufacturing body drums, etc.
（従来の技術）
例えば２円筒状のドラムに感光性物質を含有する塗布液
を塗布し、該塗布液を乾燥させて、感光層となる塗膜を
形成することにより電子写真感光体ドラムを製造する場
合には、ドラム表面に塗布液を均一な厚さとなるように
塗布しなければならない。ドラム外周面に、感光性物質
を含有する塗布液を塗布するドラム塗布方法としては、
塗布液中にドラムを浸漬させ、塗布液内に浸漬されたド
ラムを略鉛直に保持しつつその軸方向に所定の速度で塗
布液から退出させることにより、ドラム外周面に均一な
厚さに塗布液を塗布する浸漬法が一般的である。(Prior art) For example, an electrophotographic photoreceptor drum is manufactured by applying a coating liquid containing a photosensitive substance to two cylindrical drums and drying the coating liquid to form a coating film that becomes a photosensitive layer. In this case, the coating liquid must be applied to the drum surface to a uniform thickness. A drum coating method in which a coating liquid containing a photosensitive substance is applied to the outer peripheral surface of the drum is as follows:
The drum is immersed in the coating liquid, and by holding the drum immersed in the coating liquid approximately vertically and withdrawing it from the coating liquid at a predetermined speed in the axial direction, the drum is coated to a uniform thickness on the outer circumferential surface of the drum. The immersion method, in which a liquid is applied, is common.
この浸漬法では、ドラム外周面の略全体に塗布液を塗布
する必要から、ドラムを略鉛直に保持する保持部材等が
ドラム外周面に接触しないようにしなければならない。In this dipping method, since it is necessary to apply the coating liquid to substantially the entire outer circumferential surface of the drum, it is necessary to prevent the holding member or the like that holds the drum substantially vertically from coming into contact with the outer circumferential surface of the drum.
このため、ドラムをその内周面側から略鉛直に保持する
装置が１例えば、特開閉５９−４４６６号公報に開示さ
れている。該公報に開示された装置は、その膨張により
ドラム内周面に気密に当接する袋部分を有し、該袋部分
を膨張させることによりドラムは略鉛直に保持される。For this purpose, a device for holding the drum substantially vertically from its inner peripheral surface side is disclosed, for example, in Japanese Patent Laid-Open No. 59-4466. The device disclosed in this publication has a bag portion that comes into airtight contact with the inner peripheral surface of the drum when expanded, and the drum is held substantially vertically by expanding the bag portion.
該公報に開示された装置では、ドラム外周面の略全体に
塗布液を塗布することができる。また。The apparatus disclosed in this publication can apply the coating liquid to substantially the entire outer peripheral surface of the drum. Also.
袋部分がドラム内周面に気密に当接することにより、ド
ラム内をその下端開口部を除いて気密状態とし得るため
、ドラムを塗布液内へ浸漬させた際に、ドラム下端の開
口部からドラム内に塗布液がほとんど侵入するおそれが
ない。By airtightly contacting the inner peripheral surface of the drum with the bag portion, the inside of the drum can be kept airtight except for the opening at the bottom end of the drum. There is almost no risk of the coating liquid entering inside.
（発明が解決しようとする問題点）
電子写真感光体ドラムを製造する際に用いられる塗布液
には、テトラヒドロフラン等の揮発性の有機溶剤が使用
されており、該溶剤は塗布液から絶えず蒸発している。(Problems to be Solved by the Invention) Volatile organic solvents such as tetrahydrofuran are used in the coating liquid used in manufacturing electrophotographic photosensitive drums, and the solvent constantly evaporates from the coating liquid. ing.
前記公報のように、ドラム内周面に袋部分が気密に当接
されて、ドラム内をその下端開口部を除いて気密状態と
されている場合には、ドラムが塗布液内に浸漬されるこ
とにより、塗布液内に浸漬されたドラム下部の気密状態
の空間は高圧状態になる。このような高圧状態で。As in the above-mentioned publication, when the bag portion is brought into airtight contact with the inner peripheral surface of the drum and the inside of the drum is made airtight except for the opening at the lower end, the drum is immersed in the coating liquid. As a result, the airtight space at the bottom of the drum immersed in the coating liquid becomes under high pressure. under such high pressure conditions.
ドラムを塗布液から退出させると、トーラム下部の空間
の圧力が低下し、ドラム内の塗布液面から溶剤が蒸発し
てドラム内に充満される。そして、該溶剤蒸気量が多く
なれば、ドラムを塗布液から退出させる際に、ドラム内
の空間から溶剤蒸気が気泡となって漏出するおそれがあ
る。このような気泡は、塗布液面を揺らし、また、ドラ
ム外周面に付着するため、ドラムを塗布液から退出させ
た場合に、ドラム外周面に、塗布液を均一な厚さにて塗
布することができない。ドラム外周面に付着した気泡が
破裂すれば、液ブレが生じて、塗布された塗布液の厚さ
を不均一とする。When the drum is withdrawn from the coating liquid, the pressure in the space below the toram decreases, and the solvent evaporates from the surface of the coating liquid in the drum, filling the drum. If the amount of solvent vapor increases, there is a risk that the solvent vapor may leak out in the form of bubbles from the space inside the drum when the drum is removed from the coating liquid. These bubbles shake the surface of the coating liquid and adhere to the outer circumferential surface of the drum, so when the drum is removed from the coating liquid, it is difficult to apply the coating liquid to a uniform thickness on the outer circumferential surface of the drum. I can't. If the bubbles adhering to the outer circumferential surface of the drum burst, liquid blurring occurs, making the thickness of the applied coating liquid uneven.
本発明は、上記従来の問題点を解決するものであり、そ
の目的は、ドラムを塗布液内に浸漬させた場合にも気泡
が発生するおそれがなく、従って。The present invention solves the above-mentioned conventional problems, and its purpose is to eliminate the possibility of bubbles being generated even when the drum is immersed in the coating liquid.
ドラム外周面に均一な厚さに塗布液を塗布し得るドラム
塗布方法を提供することにある。It is an object of the present invention to provide a drum coating method capable of applying a coating liquid to a uniform thickness on the outer peripheral surface of a drum.
（問題点を解決するための手段）
本願発明者らは、このような問題を解決するために、鋭
意、実験を行ったところ、ドラムを略鉛直に保持して塗
布液内に浸漬させるに際して、下端開口部を除いて気密
状態となったドラム内の下部空間が、所定の体積以下と
なっていれば、該ドラムを塗布液から退出させるときに
該空間内に溶剤蒸気が侵入しても、該空間からは溶剤蒸
気が気泡となって流出するおそれがないことを見出した
。(Means for Solving the Problems) In order to solve these problems, the inventors of the present application conducted extensive experiments and found that when holding the drum approximately vertically and immersing it in the coating liquid, If the lower space inside the drum, which is airtight except for the lower end opening, is below a predetermined volume, even if solvent vapor enters the space when the drum is removed from the coating liquid, It has been found that there is no possibility that the solvent vapor will flow out in the form of bubbles from the space.
本発明は、このような知見に基づいてなされたものであ
る。The present invention has been made based on such knowledge.
本発明は、ドラム内の下部に空間を有した状態で、該ド
ラムを略鉛直に、しかも該空間を下端の開口部を除いて
気密状態に保持して昇降させることにより、該ドラムを
揮発性の塗布液内に浸漬し。The present invention has a space in the lower part of the drum, and by raising and lowering the drum substantially vertically and keeping the space airtight except for the opening at the lower end, the drum can be moved to a volatile state. Immerse it in the coating solution.
浸漬されたドラムを該塗布液から退出させてドラム外周
面に塗布液を塗布する方法であり、前記ドラ゛ム内の下
部空間の体積■を、該ドラムの内径φに対して、 Ｖ
＜２０（１／２φ）２πとなるようにして塗布液内に浸
漬させることを特徴としており、そのことにより上記目
的が達成される。In this method, the immersed drum is removed from the coating liquid and the coating liquid is applied to the outer peripheral surface of the drum.
It is characterized by being immersed in the coating liquid so that <20(1/2φ)2π, thereby achieving the above object.
（実施例） 以下に本発明を実施例について説明する。(Example) The present invention will be described below with reference to Examples.
本発明のドラム塗布方法は、第１図に示すように、揮発
性の塗布液５０が収容された塗布液槽５１と。As shown in FIG. 1, the drum coating method of the present invention includes a coating liquid tank 51 containing a volatile coating liquid 50.
該塗布液槽５１の上方に配設されたドラム保持部材２０
とを用いて実施される。Drum holding member 20 disposed above the coating liquid tank 51
It is carried out using
塗布液槽５１内に収容される塗布液５０としては。The coating liquid 50 contained in the coating liquid tank 51 is as follows.
例えば、電子写真感光体ドラムを製造する場合には、感
光性物質を、テトラヒドロフラン等の揮発性の有機溶剤
に溶融させたものが使用される。For example, when manufacturing an electrophotographic photosensitive drum, a photosensitive material dissolved in a volatile organic solvent such as tetrahydrofuran is used.
該塗布液槽５１の上方に配設されたドラム保持部材２０
は、塗布液５０の上方に、略鉛直に配設された中空円筒
状の支持杆１０の下端部に取付けられている。該支持杆
１０の上部は１図外の昇降装置に連結されており、該昇
降装置により、支持杆１０は、略鉛直状態を保持しつつ
昇降駆動される。また、該支持杆１０は、エアーポンプ
等の気体給排装置に連結されており、所定の気体が該支
持杆１０内へ送給され、かつ該支持杆１０から排出され
る。Drum holding member 20 disposed above the coating liquid tank 51
is attached to the lower end of a hollow cylindrical support rod 10 that is arranged substantially vertically above the coating liquid 50 . The upper part of the support rod 10 is connected to a lifting device (not shown in Figure 1), and the support rod 10 is driven up and down by the lifting device while maintaining a substantially vertical state. Further, the support rod 10 is connected to a gas supply/discharge device such as an air pump, and a predetermined gas is supplied into the support rod 10 and discharged from the support rod 10.
該支持杆１０の下端部に取付けられたドラム保持部材２
０は２例えば、膨張および収縮可能となった気密のゴム
製袋が用いられており、支持杆１０の下端部に外嵌され
ている。該ドラム保持部材２０は。Drum holding member 2 attached to the lower end of the support rod 10
For example, an airtight rubber bag that can be expanded and contracted is used, and is fitted onto the lower end of the support rod 10. The drum holding member 20 is.
支持杆１０の下端面に気密に取付けられた取付具１１゜
および該取付具１１の上方位置にて支持杆１０に外嵌さ
れた取付具１２にて、支持されている。It is supported by a fixture 11° airtightly attached to the lower end surface of the support rod 10 and a fixture 12 externally fitted onto the support rod 10 at a position above the fixture 11.
該ドラム保持部材２０は、支持杆１ｏの下端部において
、その周面を貫通するように配設された透孔１０ａによ
り、該支持杆１０内に連通しており、該支持杆１０内を
通流する所定の気体が、該透孔１０ａを介して、該ドラ
ム保持部材２０内へ送給され、また。The drum holding member 20 communicates with the support rod 10 through a through hole 10a provided at the lower end of the support rod 1o so as to pass through the circumferential surface of the support rod 1o. A predetermined gas to be caused to flow is fed into the drum holding member 20 through the through hole 10a.
該ドラム保持部材２０内の気体が支持杆１ｏを通して排
出される。そして、該ドラム保持部材２ｏ内に気体が送
給されることにより、該ドラム保持部材２゜は膨張し、
該ドラム保持部材２ｏの外周面は、塗布液を塗布すべき
ドラム４ｏの内周面に気密に嵌合する。これにより、ド
ラム４ｏは、略鉛直に保持されると共に、ドラム４０内
の下部は、その下端の開口部を除いて気密状態とされる
。また、ドラム保持部材２０内の気体は、該支持杆ｌｏ
内を通して排出され、これにより、該ドラム保持部材２
ｏは収縮して。The gas within the drum holding member 20 is exhausted through the support rod 1o. Then, by supplying gas into the drum holding member 2o, the drum holding member 2° expands,
The outer circumferential surface of the drum holding member 2o is airtightly fitted to the inner circumferential surface of the drum 4o to which the coating liquid is to be applied. As a result, the drum 4o is held substantially vertically, and the lower part of the interior of the drum 40 is kept airtight except for the opening at the lower end. In addition, the gas inside the drum holding member 20 is
is discharged through the drum holding member 2.
o is contracted.
Ｉ゛ラム４０保持を解除する。Release the Iram 40 hold.
このような構成のドラム塗布装置を用いて９本発明方法
は次のように実施される。まず、外周面に所定の塗布液
を塗布すべきドラム４０内に、ドラム保持部材２０を位
置させる。このような状態で。The method of the present invention is carried out as follows using the drum coating apparatus having such a configuration. First, the drum holding member 20 is positioned within the drum 40 whose outer peripheral surface is to be coated with a predetermined coating liquid. In this condition.
支持杆１０内に所定の気体を送給する。これにより。A predetermined gas is supplied into the support rod 10. Due to this.
ドラム保持部材２０が膨張し、該ドラム保持部材２０外
周面がドラム４０内周面に気密に密着して、該ドラム４
０を略鉛直状態に保持する。ドラム保持部材２０は、略
鉛直に保持したドラム４０内の下部を、その下端の開口
部を除いて気密状態とする。The drum holding member 20 expands, and the outer circumferential surface of the drum holding member 20 comes into airtight contact with the inner circumferential surface of the drum 40.
0 in a substantially vertical state. The drum holding member 20 keeps the lower part of the drum 40 held substantially vertically airtight except for the opening at the lower end.
この場合、ドラム１０内におけるドラム保持部材２０の
下方の空間の体積Ｖは、該ドラム１０の内径φに対して
。In this case, the volume V of the space below the drum holding member 20 in the drum 10 is relative to the inner diameter φ of the drum 10.
Ｖ＜２０（１／２φ）２π、好ましくは■≦１５（１／
２φ）２πとなるように、ドラム保持部材２０にてドラ
ム４０が保持される。V<20(1/2φ)2π, preferably ■≦15(1/2φ)
The drum 40 is held by the drum holding member 20 so that 2φ)2π.
このような状態で、支持杆１０が下降され、ドラム保持
部材２０は、保持したドラム４０と共に下降される。こ
れにより、ドラム４０は、その上端部を除いて塗布液５
０内へ浸漬され、このような状態で。In this state, the support rod 10 is lowered, and the drum holding member 20 is lowered together with the drum 40 held therein. As a result, the drum 40, except for its upper end, is coated with the coating liquid 5.
0 and in this state.
ドラム４０の下降は停止される。The descent of drum 40 is stopped.
この場合、ドラム４０内における下部空間は、下端開口
部を除いて気密状態となっているために。In this case, the lower space within the drum 40 is airtight except for the lower end opening.
該空間内には、塗布液はほとんど侵入しない。Almost no coating liquid enters the space.
次いで、支持杆１０が上昇されることにより、ドラム保
持部材２０がドラム４０を保持した状態で上昇され、ド
ラム４０は、塗布液５０から退出される。このとき、ド
ラム４０内における下部空間の圧力は低下するが、該空
間の体積■は、ドラム内径φに対し７．Ｖ＜２０（１／
２φ）２π、好マシくはＶ≦１５（１／２φ）２πを満
足するように、非常に小さく設定されており、該空間内
には、塗布液５０から茅発する溶剤蒸気が極く少量しか
侵入しない。その結果、ドラム４０をさらに上昇させて
、塗布液５０から退出させることにより、ドラム４０内
の下部空間の圧力を低下させても、ドラム４０内の下部
空間から、溶剤蒸気がドラム４０外へ気泡となって流出
するおそれがなく、ドラム４０が塗布液から退出する際
に塗布面液が揺れるおそれがない。そして、ドラム４０
が塗布液５０から所定の速度で退出され、これにより。Next, by raising the support rod 10, the drum holding member 20 is raised while holding the drum 40, and the drum 40 is withdrawn from the coating liquid 50. At this time, the pressure in the lower space inside the drum 40 decreases, but the volume of this space is 7. V<20(1/
2φ)2π, preferably V≦15(1/2φ)2π, and the space is set to be very small so as to satisfy V≦15(1/2φ)2π. Don't invade. As a result, even if the pressure in the lower space inside the drum 40 is lowered by raising the drum 40 further and leaving the coating liquid 50, the solvent vapor bubbles from the lower space inside the drum 40 to the outside of the drum 40. There is no risk of the coating liquid flowing out, and there is no risk of the coating surface liquid shaking when the drum 40 leaves the coating liquid. And drum 40
is withdrawn from the coating liquid 50 at a predetermined speed, thereby.
ドラム４０外周面には、均一な厚さで塗布液が塗布され
る。The coating liquid is applied to the outer peripheral surface of the drum 40 in a uniform thickness.
ドラム保持部材２０にて保持されたドラム４０の下部空
間の体積■が小さくなれば、塗布液内への浸漬時におけ
る溶剤蒸気の侵入量が減少する。従って、該空間体積Ｖ
は小さいほど好ましく、ドラム保持部材２０が塗布液５
０に浸漬されないように、 （１／２φ）２π≦Ｖを満
足していればよい。If the volume (2) of the space below the drum 40 held by the drum holding member 20 is reduced, the amount of solvent vapor that enters during immersion into the coating liquid is reduced. Therefore, the spatial volume V
The smaller the drum holding member 20 is, the more preferable it is.
It is sufficient that (1/2φ)2π≦V is satisfied so as not to be immersed in zero.
（発明の効果）
本発明のドラム塗布方法は、このように、塗布液内に浸
漬されたドラム内に、所定体積以下の気密の空間が形成
されているため、該ドラムを塗布液から退出させる際に
、塗布液から蒸発する溶剤蒸気が侵入しても、その侵入
量が少なく、その結果、ドラムを塗布液から退出させる
際に、ドラム内の溶剤蒸気が気泡となって塗布液内へ流
出することが防止される。これにより、ドラムを塗布液
から退出させる際に、気泡が塗布液面を揺らずおそれが
なく、ドラム外周面に均一な厚さにて塗布液を塗布する
ことができる。(Effects of the Invention) In the drum coating method of the present invention, since an airtight space of a predetermined volume or less is formed in the drum immersed in the coating liquid, the drum is removed from the coating liquid. When solvent vapor evaporates from the coating solution, even if it enters, the amount of intrusion is small, and as a result, when the drum is removed from the coating solution, the solvent vapor inside the drum becomes bubbles and flows out into the coating solution. It is prevented from doing so. Thereby, when the drum is removed from the coating liquid, there is no fear that air bubbles may shake the surface of the coating liquid, and the coating liquid can be applied to the outer peripheral surface of the drum in a uniform thickness.
４．゛ の１ な云゛■
第１図は本発明のドラム塗布方法の実施状態の一例を示
す断面図である。4. Figure 1 is a sectional view showing an example of the implementation state of the drum coating method of the present invention.
１０・・・支持杆、２０・・・ドラム保持部材、４０・
・・ドラム。10... Support rod, 20... Drum holding member, 40...
··drum.
５０・・・塗布液。50...Coating liquid.
以上that's all
Claims (1)
略鉛直に、しかも該空間を下端の開口部を除いて気密状
態に保持して昇降させることにより、該ドラムを揮発性
の塗布液内に浸漬し、浸漬されたドラムを該塗布液から
退出させてドラム外周面に塗布液を塗布する方法であり
、 前記ドラム内の下部空間の体積Ｖを、該ドラムの内径φ
に対して、 Ｖ＜２０（１／２φ）＾２π となるようにして塗布液内に浸漬させることを特徴とす
るドラム塗布方法。[Claims] 1. With a space at the bottom of the drum, the drum is raised and lowered substantially vertically, and the space is kept airtight except for the opening at the lower end. This is a method in which a drum is immersed in a volatile coating liquid, the immersed drum is removed from the coating liquid, and the coating liquid is applied to the outer peripheral surface of the drum, and the volume V of the lower space within the drum is inner diameter φ
A drum coating method characterized by immersing the drum in a coating liquid so that V<20(1/2φ)^2π.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14988187A JPS63315171A (en) | 1987-06-16 | 1987-06-16 | Drum coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14988187A JPS63315171A (en) | 1987-06-16 | 1987-06-16 | Drum coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63315171A true JPS63315171A (en) | 1988-12-22 |
Family
ID=15484676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14988187A Pending JPS63315171A (en) | 1987-06-16 | 1987-06-16 | Drum coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63315171A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125660A (en) * | 1984-07-12 | 1986-02-04 | Mita Ind Co Ltd | Coating device |
| JPS6348556A (en) * | 1986-08-19 | 1988-03-01 | Matsushita Electric Ind Co Ltd | Manufacture of electrophotographic sensitive drum |
-
1987
- 1987-06-16 JP JP14988187A patent/JPS63315171A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125660A (en) * | 1984-07-12 | 1986-02-04 | Mita Ind Co Ltd | Coating device |
| JPS6348556A (en) * | 1986-08-19 | 1988-03-01 | Matsushita Electric Ind Co Ltd | Manufacture of electrophotographic sensitive drum |
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