JPS624187B2 - - Google Patents
Info
- Publication number
- JPS624187B2 JPS624187B2 JP17355881A JP17355881A JPS624187B2 JP S624187 B2 JPS624187 B2 JP S624187B2 JP 17355881 A JP17355881 A JP 17355881A JP 17355881 A JP17355881 A JP 17355881A JP S624187 B2 JPS624187 B2 JP S624187B2
- Authority
- JP
- Japan
- Prior art keywords
- coated
- coating
- air
- substrate
- coating liquid
- 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
Links
- 238000000576 coating method Methods 0.000 claims description 36
- 239000011248 coating agent Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 12
- 108091008695 photoreceptors Proteins 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 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
- 238000013459 approach Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
本発明は一方の端部が開放されており、他方の
端部が閉塞されている被塗布物の塗布方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of coating an object having one end open and the other end closed.
従来より浸漬法（デイツピング法）による塗布
は広く実施されている。その方法は基本的に塗液
の中に被塗布物をつけ、次いで適当な速さで被塗
布物を液から引き上げることによりその表面に塗
布するものである。浸漬法による塗布の場合、塗
液の粘度、引上速度などの塗布条件を被塗布物の
形状に応じて適宜設定することによつて均一な塗
布が可能であるが、被塗布物が一方の端部が開放
開口されており、他方の端部が閉塞されているよ
うな被塗布物の表面を塗布する場合には、泡の発
生によつて均一な塗膜の形成ができなくなること
が多い。例えば第１図に示されるような一端が開
口、他方が閉塞されている円筒状の被塗布物１を
第２図に示されるように、液槽２に収容されてい
る塗液３中に浸漬させた後、第３図に示されるよ
うに被塗布物を引上げて塗布を行う場合、この場
合被塗布物の引き上げ途中で、被塗布物の内部の
空気は閉じ込められたままである。ところがこの
ような状態の時は、塗布液と外気温度のわずかな
温度差により、被塗布物内部の空気が膨張した
り、被塗布物内部に塗液の溶剤が蒸発して体積が
増加するなどして引き上げ途中に下方から泡４を
生じることが多い。このような泡が出ると塗液が
大きくゆれて、塗布面にむらが生じて均一な塗膜
の形成に支障がでる。 Coating by dipping has been widely practiced. The method basically involves immersing the object to be coated in a coating liquid and then drawing the object out of the liquid at an appropriate speed to coat the surface of the object. In the case of coating by dipping, uniform coating is possible by appropriately setting the coating conditions such as the viscosity of the coating liquid and the pulling speed depending on the shape of the object to be coated. When coating the surface of an object to be coated where one end is open and the other end is closed, it is often impossible to form a uniform coating film due to the generation of bubbles. . For example, a cylindrical workpiece 1 with one end open and the other end closed as shown in FIG. 1 is immersed in a coating liquid 3 contained in a liquid tank 2 as shown in FIG. When the object to be coated is then pulled up and coated as shown in FIG. 3, the air inside the object remains trapped while the object is being pulled up. However, in such a situation, due to a slight temperature difference between the coating liquid and the outside air temperature, the air inside the object to be coated may expand, or the solvent of the coating liquid may evaporate inside the object, increasing its volume. Bubbles 4 are often generated from below during lifting. When such bubbles are generated, the coating liquid is shaken considerably, causing unevenness on the coated surface and hindering the formation of a uniform coating film.
而して本発明は、このような泡の発生が生じる
ことが有効に防止できる塗布方法を提供すること
を主たる目的とする。 Therefore, the main object of the present invention is to provide a coating method that can effectively prevent the generation of such bubbles.
本発明による塗布方法は、塗布時に被塗布物の
開口部を下にした状態で塗液中に浸漬することに
よつて被塗布物の内部に空気が封じ込められたま
まで被塗布物の表面を塗布する方法において、被
塗布物を塗液中に浸漬する際、被塗布物の内部に
封じ込められた空気の一部を抜くことを特徴とす
るものである。 In the coating method according to the present invention, the object to be coated is immersed in the coating liquid with its opening facing down during coating, thereby coating the surface of the object while keeping air sealed inside the object. This method is characterized in that when the object to be coated is immersed in the coating liquid, part of the air trapped inside the object to be coated is removed.
即ち、本発明では泡が出ないようにするため、
被塗布物内部の空気の一部を抜くようにしたもの
であり、ごく簡単な手段で行うことができる。第
４図および第５図に本発明による塗布方法を実施
するための装置の一態様を示す。 That is, in the present invention, in order to prevent bubbles from forming,
This method is designed to remove a portion of the air inside the object to be coated, and can be done using very simple means. FIGS. 4 and 5 show one embodiment of an apparatus for carrying out the coating method according to the present invention.
第４図において、被塗布物である基体５は、電
子写真複写機に用いられる感光体の基体であり、
円筒状のアルミニウムの片方の端部が開口、もう
片方の端部が図のような形状にして閉じられてい
るもので上端部の突起は感光体を支持するために
設けられたものである。 In FIG. 4, a substrate 5, which is an object to be coated, is a substrate of a photoreceptor used in an electrophotographic copying machine.
It is a cylindrical piece of aluminum with one end open and the other end closed in the shape shown in the figure, with a protrusion on the top end provided to support the photoreceptor.
９は空気を通すための通気管であり、その先に
小容量のゴム製の空気室１０を取り付ける。６は
基体を取り付ける支持部で、駆動機７を回転させ
ると昇降ネジ８が回転し、基体が上下される。支
持部６は上下方向にのみ移動するように拘束され
ている。 9 is a ventilation pipe for passing air, and a small-capacity rubber air chamber 10 is attached to the end of the ventilation pipe. Reference numeral 6 denotes a support portion to which the base body is attached, and when the drive unit 7 is rotated, an elevating screw 8 is rotated to move the base body up and down. The support portion 6 is restricted to move only in the vertical direction.
次に第５図に示されるように、基体５が塗液３
中に浸漬されると、基体内部の空気圧によりゴム
製の空気室１０はふくらむが、そのふくらむ容量
は基体底部に液が一部例えば１cm程度に入るよう
にすると、泡の発生の防止上好適である。液が深
く入るほど泡が出にくくなるわけであるが、基体
内部も塗布されることになるので通常は避けるべ
きである。なお、通気管９に塗液が入ることはな
い。第５図の状態から基体を塗布に適した速度で
引き上げると基体表面に塗液がむらなく塗布され
る。なお、基体が引上げられて塗液中から脱する
際には、基体内部の空気圧も大気圧に近づくの
で、空気室内に一端抜けた空気が再び基体内部に
もどり基体内部の下方に一部入り込んでいた塗液
も外に出るため、基体の塗液中からの離脱は円滑
に行えるものである。 Next, as shown in FIG.
When the rubber air chamber 10 is immersed in the liquid, the air pressure inside the base inflates the rubber air chamber 10, but the expansion capacity is preferably such that a portion of the liquid enters, for example, 1 cm at the bottom of the base, in order to prevent the formation of bubbles. be. The deeper the liquid enters, the less bubbles will form, but the inside of the substrate will also be coated, so it should normally be avoided. Note that the coating liquid will not enter the ventilation pipe 9. When the substrate is pulled up from the state shown in FIG. 5 at a speed suitable for coating, the coating liquid is evenly applied to the surface of the substrate. Note that when the substrate is pulled up and removed from the coating liquid, the air pressure inside the substrate approaches atmospheric pressure, so the air that once escaped into the air chamber returns to the inside of the substrate and partially enters the lower part of the interior of the substrate. Since the coating liquid that was present also comes out, the substrate can be smoothly removed from the coating liquid.
なお、図では空気を抜く容量を一定にするた
め、ゴム製の空気室を用いたが、このほかにも、
通気管の先に電磁弁，バルブなどを取り付けて小
量の空気を抜く方法も適宜採用できるものであ
る。 In addition, in the figure, a rubber air chamber was used to keep the volume of air removed constant, but in addition to this,
A method of removing a small amount of air by attaching a solenoid valve, valve, etc. to the end of the ventilation pipe can also be adopted as appropriate.
このように、本発明は、感光体用の基体を一例
として片方の端部が開口、片方が閉じられている
物体を浸漬法で塗布する場合に有効な塗布方法で
ある。 As described above, the present invention is an effective coating method when coating an object having one end open and the other end closed using a dipping method, such as a substrate for a photoreceptor.
第１図は被塗布物の側面図である。第２図およ
び第３図は従来の浸漬塗布方法による概略図で第
２図は浸漬した状態、第３図は引上げる状態を示
す。第４図は本発明に用いる塗布装置の概略図で
ある。第５図は第４図の塗布装置の浸漬状態図で
ある。
１…被塗布物、２…液槽、３…塗液、４…泡、
５…基体、６…支持部、７…駆動部、８…昇降ね
じ、９…通気管、１０…空気室。
FIG. 1 is a side view of the object to be coated. 2 and 3 are schematic views of the conventional dip coating method, with FIG. 2 showing the immersed state and FIG. 3 showing the pulled up state. FIG. 4 is a schematic diagram of a coating device used in the present invention. FIG. 5 is a diagram of the coating device of FIG. 4 in an immersed state. 1...Object to be coated, 2...Liquid tank, 3...Coating liquid, 4...Bubble,
5... Base body, 6... Support part, 7... Drive part, 8... Elevating screw, 9... Ventilation pipe, 10... Air chamber.
Claims (1)
塗液中に浸漬することによつて被塗布物の内部に
空気が封じ込められたままで被塗布物の表面を塗
布する塗布方法において、 被塗布物を塗液中に浸漬する際、被塗布物の内
部に封じ込められた空気の一部を抜くことを特徴
とする塗布方法。 ２ 被塗布物が電子写真複写機用感光体の基体で
ある特許請求の範囲第１項記載の塗布方法。[Scope of Claims] 1. During application, the surface of the object to be coated is coated while air is sealed inside the object by immersing the object with the opening side facing down in the coating solution. A coating method characterized in that when the object to be coated is immersed in the coating liquid, part of the air trapped inside the object to be coated is removed. 2. The coating method according to claim 1, wherein the object to be coated is a substrate of a photoreceptor for an electrophotographic copying machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17355881A JPS5874170A (en) | 1981-10-29 | 1981-10-29 | Applying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17355881A JPS5874170A (en) | 1981-10-29 | 1981-10-29 | Applying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5874170A JPS5874170A (en) | 1983-05-04 |
| JPS624187B2 true JPS624187B2 (en) | 1987-01-29 |
Family
ID=15962769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17355881A Granted JPS5874170A (en) | 1981-10-29 | 1981-10-29 | Applying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874170A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168154A (en) * | 1984-02-13 | 1985-08-31 | Canon Inc | Method and device for manufacturing electrophotographic sensitive body by coating |
| US6652910B2 (en) * | 2002-02-08 | 2003-11-25 | Xerox Corporation | Apparatus and method for controlling coating solution level within substrate |
-
1981
- 1981-10-29 JP JP17355881A patent/JPS5874170A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5874170A (en) | 1983-05-04 |
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