JPH02140752A - Method for coating photosensitive drum - Google Patents
Method for coating photosensitive drumInfo
- Publication number
- JPH02140752A JPH02140752A JP29503288A JP29503288A JPH02140752A JP H02140752 A JPH02140752 A JP H02140752A JP 29503288 A JP29503288 A JP 29503288A JP 29503288 A JP29503288 A JP 29503288A JP H02140752 A JPH02140752 A JP H02140752A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- photosensitive drum
- coating liquid
- tank
- solvent
- 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 44
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000003618 dip coating Methods 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000000935 solvent evaporation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、感光ドラムの塗布方法に関し、特に均一、安
定な塗布膜を形成する塗布方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating method for a photosensitive drum, and particularly to a coating method for forming a uniform and stable coating film.
従来、この種の塗布方法は、第４図に示すように、塗布
タンクに所定量の塗料を入れ、被塗布物を浸漬させ引き
上げを行なっていた。従って、溶剤雰囲気空間を有する
浸漬方法となっていた。Conventionally, in this type of coating method, as shown in FIG. 4, a predetermined amount of paint is put into a coating tank, the object to be coated is immersed, and then pulled out. Therefore, the immersion method has a solvent atmosphere space.
上述した従来の塗布方法においては、塗布タンクに被塗
布物を浸漬し引き上げると、塗料の液面は下降し、塗布
タンク上部の空間は溶剤蒸気が留まっていた。この溶剤
雰囲気濃度の変化により、被塗布物からの溶剤蒸発速度
が変ってくる為被塗布物の形成膜厚が変わり不均一とな
り、また、塗料の溶剤蒸発にともない塗料濃度が変化し
被塗布物毎に膜厚が異なるという欠点があった。In the conventional coating method described above, when the object to be coated is immersed in the coating tank and pulled up, the liquid level of the coating material falls, and the solvent vapor remains in the space above the coating tank. This change in the solvent atmosphere concentration changes the rate of solvent evaporation from the object to be coated, which changes the thickness of the film formed on the object and makes it non-uniform.Also, as the solvent in the paint evaporates, the concentration of the paint changes and the rate of evaporation of the solvent from the object changes. The drawback was that the film thickness was different for each type.
本発明の感光ドラムの塗布方法は、感光ドラムの外径よ
り大きな穴を有し常時塗布液に浮いて塗布液面を覆って
いるフロート板を具備した塗布タンクで浸漬塗布を行な
うことを特徴とする。The photosensitive drum coating method of the present invention is characterized in that dip coating is carried out in a coating tank equipped with a float plate that has a hole larger than the outer diameter of the photosensitive drum and constantly floats in the coating liquid to cover the surface of the coating liquid. do.
次に、本発明の一実施例について説明する。 Next, one embodiment of the present invention will be described.
第１図（ａ）は、感光ドラム２を塗布タンク３に浸漬す
る前の状態、第１図（ｂ）は浸漬した状態、第１図（ｃ
）は引き上げ中の状態を示す。第２図を参照すると、塗
布タンク３中には感光ドラム２の外径よりも大きな穴が
形成されたフロート板１が設けられているので、タンク
上部の空間には、溶剤雰囲気は生じない。FIG. 1(a) shows the state before the photosensitive drum 2 is immersed in the coating tank 3, FIG. 1(b) shows the state after it has been immersed, and FIG.
) indicates the state in which it is being pulled up. Referring to FIG. 2, since the coating tank 3 is provided with a float plate 1 having a hole larger than the outer diameter of the photosensitive drum 2, no solvent atmosphere is generated in the space above the tank.
第３図に示すように、フロート板１の縦断面はポート型
（ａ）または浮輪型（ｂ）となっている。As shown in FIG. 3, the longitudinal section of the float plate 1 is port-shaped (a) or floating ring-shaped (b).
以上説明したように本発明は、感光ドラムの外径より大
きい穴を有し、常時塗布液に浮いて塗布液を覆っている
フロート板を具備した塗布タンク中で浸漬塗布すること
により、フロート板が塗布液の溶剤蒸発を防ぎ塗布液の
濃度変化をおさえることができる。また塗布タンク上部
の溶剤雰囲気留まりの発生を防ぐことができる為、溶剤
雰囲気の影響による塗布膜厚が不均一となることを防ぎ
安定した濃度の塗布液で安定した膜厚が得られる効果が
ある。As explained above, in the present invention, coating is carried out by dip coating in a coating tank equipped with a float plate having a hole larger than the outer diameter of the photosensitive drum and constantly floating in the coating liquid to cover the coating liquid. can prevent solvent evaporation in the coating solution and suppress changes in concentration of the coating solution. In addition, since it is possible to prevent the solvent atmosphere from remaining in the upper part of the coating tank, it is possible to prevent the coating film thickness from becoming uneven due to the influence of the solvent atmosphere, and to obtain a stable film thickness with a coating liquid of a stable concentration. .
右方法を示す縦断面図、第２図はその上面図、第３図は
フロート板の形状を示す縦断面図、第４図は従来の塗布
方法を示す断面図である。2 is a top view thereof, FIG. 3 is a longitudinal sectional view showing the shape of the float plate, and FIG. 4 is a sectional view showing the conventional coating method.
Claims (1)
いて塗布液を覆うフロート板を具備した塗布タンクを用
い、溶剤雰囲気空間を遮断して前記感光ドラムに塗料を
塗布することを特徴とする感光ドラムの塗布方法。The paint is applied to the photosensitive drum while blocking a solvent atmosphere space using a coating tank having a hole larger than the diameter of the photosensitive drum and equipped with a float plate that constantly floats on the coating liquid to cover the coating liquid. Coating method for photosensitive drums.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29503288A JPH02140752A (en) | 1988-11-21 | 1988-11-21 | Method for coating photosensitive drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29503288A JPH02140752A (en) | 1988-11-21 | 1988-11-21 | Method for coating photosensitive drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02140752A true JPH02140752A (en) | 1990-05-30 |
Family
ID=17815439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29503288A Pending JPH02140752A (en) | 1988-11-21 | 1988-11-21 | Method for coating photosensitive drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02140752A (en) |
-
1988
- 1988-11-21 JP JP29503288A patent/JPH02140752A/en active Pending
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