JPH04243572A - Coating apparatus - Google Patents
Coating apparatusInfo
- Publication number
- JPH04243572A JPH04243572A JP663091A JP663091A JPH04243572A JP H04243572 A JPH04243572 A JP H04243572A JP 663091 A JP663091 A JP 663091A JP 663091 A JP663091 A JP 663091A JP H04243572 A JPH04243572 A JP H04243572A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- substrate
- hole
- rubber plate
- base
- 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 125
- 239000011248 coating agent Substances 0.000 title claims abstract description 123
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 229920001971 elastomer Polymers 0.000 claims abstract description 30
- 239000005060 rubber Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 abstract description 26
- 238000003860 storage Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 35
- 239000007788 liquid Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 7
- 108091008695 photoreceptors Proteins 0.000 description 7
- 238000011109 contamination Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000005192 partition Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 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
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、円筒状基体の表面に
塗膜を形成する塗布装置，例えば電子写真用感光体の製
造のために、円筒状の導電性基体の表面にペイント状あ
るいは溶液状の塗布材を塗布して光導電層，さらに必要
ならばその上に表面保護層を形成する際に用いられる塗
布装置に関する。[Industrial Field of Application] The present invention is a coating device for forming a coating film on the surface of a cylindrical substrate, for example, for the production of electrophotographic photoreceptors, the present invention applies a paint-like or liquid solution to the surface of a cylindrical conductive substrate. The present invention relates to a coating device used for coating a photoconductive layer and, if necessary, a surface protective layer thereon by coating a coating material.
【０００２】0002
【従来の技術】従来より円筒状の基体表面に塗布材を塗
布して塗膜を形成する手段は多く知られている。例えば
、塗布液槽内に塗布液を充填し、この塗布液中に円筒状
の基体を浸漬し、ついで基体を引きあげて乾燥させ塗膜
を形成する浸漬法、あるいは円筒状の基体を回転させ、
回転中の基体表面に向けて塗布液を吹き付けて塗膜を形
成する噴射法などである。2. Description of the Related Art Many methods have been known for forming a coating film by applying a coating material to the surface of a cylindrical substrate. For example, there is a dipping method in which a coating liquid is filled in a coating liquid tank, a cylindrical substrate is immersed in this coating liquid, and then the substrate is pulled up and dried to form a coating film, or a cylindrical substrate is rotated.
This includes a spraying method in which a coating liquid is sprayed onto the surface of a rotating substrate to form a coating film.
【０００３】これらの塗布方法は、円筒状の基体に被覆
する方法として効果的な方法である。しかしながら、こ
のような方法において塗膜の均質性および膜厚均一性に
対して厳しい精度を要求することは難しい。例えば、円
筒状基体に浸漬法で塗布する場合、塗布液槽に多量の塗
布液を充填しておき、このなかに次々に基体を浸漬し引
きあげることが行われるが、同一塗布液を繰り返し使用
するとこれにともなって不純物の混入度合が多くなり、
また、塗布液を均質に維持しておくことも難しく、厳密
に均質な塗膜を安定して得ることは難しい。また、塗布
液のいわゆる液だれによる厚さむらが生じる可能性も高
く、膜厚の数μｍの範囲の変動が問題となる被覆に対し
ては精度の保証は困難である。特に、光導電層の均質性
、膜厚均一性などにおいて極めて高い精度が要求される
電子写真用感光体にとっては、上記要因はできるだけ徐
去すべきものである。These coating methods are effective methods for coating cylindrical substrates. However, in such a method, it is difficult to require strict precision in the uniformity and thickness uniformity of the coating film. For example, when coating a cylindrical substrate by the dipping method, a large amount of coating liquid is filled in a coating liquid tank, and the substrates are dipped and pulled out one after another, but the same coating liquid is used repeatedly. As a result, the degree of contamination with impurities increases,
Furthermore, it is difficult to keep the coating liquid homogeneous, and it is difficult to stably obtain a strictly homogeneous coating film. Furthermore, there is a high possibility that thickness unevenness will occur due to so-called dripping of the coating liquid, and it is difficult to guarantee accuracy for coatings in which variations in film thickness within a range of several micrometers are a problem. In particular, for electrophotographic photoreceptors that require extremely high precision in the homogeneity of the photoconductive layer, the uniformity of the film thickness, etc., the above factors should be eliminated as much as possible.
【０００４】このような諸要因を解決するために、円筒
状基体の外径よりも若干大径で、かつ、円周上部が切除
されている環状仕切壁からなる塗布治具を使用して、そ
の治具の中央に円筒状基体をさし込み、基体外表面を内
壁として環状仕切壁円周上部の切除部に形成される塗布
液貯留部に塗布液を必要量流し込みながら基体を鉛直方
向に引きあげることにより基体外表面に塗膜を形成する
方法が知られている。In order to solve these various factors, a coating jig consisting of an annular partition wall having a diameter slightly larger than the outer diameter of the cylindrical substrate and whose upper circumference is cut off is used. Insert the cylindrical base into the center of the jig, and move the base in the vertical direction while pouring the required amount of coating liquid into the coating liquid reservoir formed in the cutout at the top of the circumference of the annular partition wall, with the outer surface of the base as the inner wall. A method of forming a coating film on the outer surface of a substrate by pulling it up is known.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述の
方法においても、粘性の低い塗布液を用いる場合は円筒
状基体と塗布治具との間のすきまから下方へ塗布液が流
れだして塗布むらを発生する欠点があり、また、これを
避けるために基体の引きあげ速度を速くすると膜厚が厚
くなる。特に薄く，均一な塗膜を要求される場合には上
述の方法では困難である。[Problems to be Solved by the Invention] However, even in the above method, when a coating liquid with low viscosity is used, the coating liquid flows downward from the gap between the cylindrical substrate and the coating jig, resulting in uneven coating. However, if the pulling speed of the substrate is increased in order to avoid this problem, the film thickness will become thicker. In particular, when a thin and uniform coating film is required, it is difficult to use the above method.
【０００６】この発明は、上述の欠点を徐去して、塗布
材の汚染がなく、塗布材の消費量が節減でき、かつ、一
工程で均質で均一な膜厚の塗膜を円筒状基体外表面上に
形成でき、特に電子写真用感光体の製造に好適な塗布装
置を提供することを解決しようとする課題とする。The present invention gradually eliminates the above-mentioned drawbacks, eliminates contamination of the coating material, reduces consumption of the coating material, and forms a coating film with a homogeneous and uniform thickness in one step on a cylindrical substrate. The object of the present invention is to provide a coating device that can be formed on the external surface of the body and is particularly suitable for manufacturing electrophotographic photoreceptors.
【０００７】[0007]
【課題を解決するための手段】上記の課題は、この発明
によれば、円筒状基体外表面に塗膜を形成する塗布装置
であって、鉛直方向に引きあげられる基体の外表面を内
壁とし、この基体を取り囲む外壁と、少なくとも基体外
表面に摺動可能に圧接する部分が、中央に穴を有し、こ
の穴を通して基体が穴の内縁部先端と基体外表面とが圧
接摺動するように引きあげられる弾性のある一体成形の
ゴム板からなる底面とで、塗布材貯留部を形成する塗布
治具を備えた塗布装置とすることによって解決される。[Means for Solving the Problems] According to the present invention, the above problem is solved by providing a coating device for forming a coating film on the outer surface of a cylindrical substrate, in which the outer surface of the substrate that is pulled up in the vertical direction is an inner wall; The outer wall surrounding the base body and at least the portion that slidably presses against the outer surface of the base body has a hole in the center, and the base body slides through this hole so that the tip of the inner edge of the hole and the outer surface of the base body are pressed against each other. This problem can be solved by providing a coating device equipped with a coating jig that forms a coating material reservoir with a bottom surface made of an elastic, integrally molded rubber plate that can be pulled up.
【０００８】一体成形ゴム板の中央の穴の内縁部は基体
が鉛直方向に引きあげられるのを妨げない方向に傾斜し
ていることが望ましく、また、その内縁部の基体外表面
に圧接する先端には丸みをもたせておくことが望ましい
。It is desirable that the inner edge of the hole in the center of the integrally molded rubber plate be inclined in a direction that does not prevent the base from being pulled up in the vertical direction, and that the tip of the inner edge that comes into pressure contact with the outer surface of the base should be It is desirable to keep it rounded.
【０００９】[0009]
【作用】上述のような塗布治具の塗布材貯留部に逐次塗
布材を供給しながら円筒状基体を鉛直方向に引きあげる
ことにより、塗布材貯留部内の塗布材が基体外表面に付
着して塗膜が形成される。塗布材は基体外表面とこれに
圧接摺動する弾性のある一体成形ゴム板を有する底面と
にさえぎられて流下することはなく、塗布材のだれによ
る膜厚むらは発生せず膜厚均一な塗膜が形成できる。ま
た、塗布材は基体外表面に付着し塗膜を形成するに必要
な分量ずつ逐次供給されるので、その量は浸漬法に比べ
て大幅に低減でき、かつ、繰り返し使用されないので汚
染されることもなく、均質な塗膜が得られることになる
。[Operation] By pulling up the cylindrical substrate in the vertical direction while sequentially supplying the coating material to the coating material reservoir of the coating jig as described above, the coating material in the coating material reservoir adheres to the outer surface of the substrate. A coating is formed. The coating material is not blocked by the outer surface of the substrate and the bottom surface, which has an elastic integrally molded rubber plate that slides in pressure contact with the base surface, and does not flow down. Therefore, there is no unevenness in film thickness due to dripping of the coating material, and the film thickness is uniform. A coating film can be formed. In addition, since the coating material is sequentially supplied in the amount necessary to adhere to the outer surface of the substrate and form a coating film, the amount can be significantly reduced compared to the dipping method, and since it is not used repeatedly, there is no risk of contamination. Therefore, a homogeneous coating film can be obtained.
【００１０】さらに、一体成形ゴム板の中央の穴の内縁
部を基体が鉛直方向に引きあげられるのを妨げない方向
に傾斜させ、かつ、その先端に丸みをもたせることによ
り、基体の引きあげを円滑に行うことができ、塗膜の均
一性をより向上させることが可能となる。Furthermore, by slanting the inner edge of the hole in the center of the integrally molded rubber plate in a direction that does not prevent the base from being pulled up in the vertical direction, and by rounding the tip, the base can be pulled up smoothly. This makes it possible to further improve the uniformity of the coating film.
【００１１】[0011]
【実施例】図１は、この発明の塗布装置の一実施例で、
電子写真用感光体の円筒状の基体１の外表面１１に光導
電層薄膜を塗布する装置の概念的断面図である。基体１
を環状の塗布治具２が取り囲んでおり、塗布治具２は例
えばステンレス鋼よりなる外壁２１および底部２２と、
底部２２に押さえ板２４により押しつけられている，中
央に穴を有しその穴の内縁部が基体１の外表面１１に圧
接摺動する一体成形ゴム板２３とからなり、内壁はなく
、基体１の外表面１１がその内側を限定して塗布液貯留
部２５が形成される。一体成形ゴム板２３としては有機
光導電材料あるいは有機表面保護材料の塗布液に含まれ
る有機溶剤におかされにくい弾性のあるゴム、例えばシ
リコン系，ふっ素系，クロロプレン系，ニトリル系など
のゴムが使用できる。一体成形ゴム板２３の中央の穴の
内縁部は基体１が鉛直方向に引きあげられるのを妨げな
い方向に傾斜がつけられており、その基体外表面１１に
圧接する先端は丸くなっている。穴の径は基体外径より
若干小さくされる。一体成形ゴム板２３の一例の横断面
図を図２に、また、基体外径に対応した形状寸法の一例
を表１に示す。図２および表１において、Ａは一体成形
ゴム板２３の直径，Ｂは穴の直径を示す。また、図２の
凸状部Ｃは一体成形ゴム板２３を押さえ板２４で底部２
２に押し付けるときにこの凸状部Ｃに押さえ板２４を接
触させて押し付け一体成形ゴム板２３の固定を確実なも
のとするために設けられている。[Embodiment] FIG. 1 shows an embodiment of the coating apparatus of the present invention.
1 is a conceptual cross-sectional view of an apparatus for applying a thin photoconductive layer to the outer surface 11 of a cylindrical substrate 1 of an electrophotographic photoreceptor. Base 1
is surrounded by an annular coating jig 2, and the coating jig 2 has an outer wall 21 and a bottom portion 22 made of stainless steel, for example.
It consists of an integrally molded rubber plate 23 which has a hole in the center and which is pressed against the bottom part 22 by a pressing plate 24, and the inner edge of the hole slides in pressure contact with the outer surface 11 of the base body 1, and has no inner wall. The outer surface 11 of the coating liquid reservoir 25 is formed by defining the inner side thereof. The integrally molded rubber plate 23 is made of elastic rubber that is not susceptible to organic solvents contained in coating liquids for organic photoconductive materials or organic surface protection materials, such as silicone-based, fluorine-based, chloroprene-based, or nitrile-based rubbers. can. The inner edge of the central hole of the integrally molded rubber plate 23 is sloped in a direction that does not prevent the base 1 from being pulled up in the vertical direction, and the tip that comes into pressure contact with the outer surface 11 of the base is rounded. The diameter of the hole is made slightly smaller than the outer diameter of the base. A cross-sectional view of an example of the integrally molded rubber plate 23 is shown in FIG. 2, and an example of the shape and dimensions corresponding to the outer diameter of the base body is shown in Table 1. In FIG. 2 and Table 1, A indicates the diameter of the integrally molded rubber plate 23, and B indicates the diameter of the hole. In addition, the convex portion C in FIG.
2, the pressure plate 24 is brought into contact with this convex portion C to ensure the fixation of the integrally molded rubber plate 23.
【００１２】0012
【表１】[Table 1]
【００１３】塗布液貯留部２５には上部に配置された塗
布液供給部３から弁３１を介して塗布液４が必要量ずつ
逐次供給される。基体１を塗布治具２に対して鉛直方向
である矢印６の方向に相対的に引きあげると、塗布液貯
留部２５内の塗布液４が基体外表面１１に順次付着し、
塗膜５が形成される。塗膜５の厚さは、基体１と塗布治
具２との相対的な移動速度および塗布液の粘度により決
まる。薄膜を得るためには、この移動速度を遅くするか
塗布液の粘度を小さくすることが必要である。一体成形
ゴム板２３の中央の穴の内縁部は基体１が鉛直方向に引
きあげられるのを妨げない方向に傾斜しており、かつ、
その基体外表面１１に弾力をもって圧接する先端部は丸
くなっているため、基体１を希望する移動速度で円滑に
引きあげることができる。また、一体成形ゴム板２３の
穴の径は基体外径より若干小さくしてあるため、穴の内
縁部先端は基体外表面に圧接して摺動し、塗布液の粘度
を小さくしても塗布液が塗布液貯留部２５から流下する
ことはなく液だれによる膜厚むらが発生することはない
。従って、１μｍ以下の膜厚の塗膜でも作業性良く塗布
形成することが可能となる。塗布液は必要量ずつ逐次塗
布液貯留部へ供給されるので塗布液量は少なくてすみ、
また、繰り返し使用されないで汚染の心配もない。A necessary amount of the coating liquid 4 is sequentially supplied to the coating liquid storage section 25 from the coating liquid supply section 3 disposed above via a valve 31. When the substrate 1 is pulled up relative to the coating jig 2 in the direction of the arrow 6, which is the vertical direction, the coating liquid 4 in the coating liquid storage section 25 sequentially adheres to the outer surface 11 of the substrate.
A coating film 5 is formed. The thickness of the coating film 5 is determined by the relative moving speed between the substrate 1 and the coating jig 2 and the viscosity of the coating liquid. In order to obtain a thin film, it is necessary to slow down this movement speed or to reduce the viscosity of the coating liquid. The inner edge of the central hole of the integrally molded rubber plate 23 is inclined in a direction that does not prevent the base body 1 from being pulled up in the vertical direction, and
Since the tip that elastically presses against the outer surface 11 of the base body is rounded, the base body 1 can be pulled up smoothly at a desired moving speed. In addition, since the diameter of the hole in the integrally molded rubber plate 23 is made slightly smaller than the outer diameter of the base, the tip of the inner edge of the hole slides in pressure contact with the outer surface of the base, and even if the viscosity of the coating liquid is reduced, the coating can be applied. The liquid does not flow down from the coating liquid reservoir 25, and unevenness in film thickness due to dripping does not occur. Therefore, even a coating film with a thickness of 1 μm or less can be coated and formed with good workability. The required amount of coating liquid is sequentially supplied to the coating liquid storage section, so the amount of coating liquid is small.
Also, since it is not used repeatedly, there is no need to worry about contamination.
【００１４】実施例１
図１に示した塗布装置を用い、長さ３００ｍｍで外径が
６０ｍｍ，７８ｍｍ，１１８ｍｍ，１５３ｍｍのＡｌ合
金の円筒状基体の所要の加工の施された外表面に、Ｘ型
フタロシアニン（大日本インキ（株）製）０．５ｇと塩
化ビニル樹脂（日本ゼオン（株）製）０．５ｇとをジク
ロロメタン５０ｇに分散・溶解させた塗布液をそれぞれ
塗布して塗膜を形成した。塗布治具の一体成形ゴム板は
材質をふっ素ゴムとし、その形状は図２の形状とし、寸
法は基体外径に対応して表１に示す寸法のものを用いた
。このとき基体の引き上げ速度を８ｍｍ／秒とし、膜厚
約０．２μｍの塗膜を得た。Example 1 Using the applicator shown in FIG. 1, X was applied to the outer surface of an Al alloy cylindrical substrate having a length of 300 mm and outer diameters of 60 mm, 78 mm, 118 mm, and 153 mm, which had undergone the required processing. A coating film was formed by applying a coating solution in which 0.5 g of type phthalocyanine (manufactured by Dainippon Ink Co., Ltd.) and 0.5 g of vinyl chloride resin (manufactured by Nippon Zeon Co., Ltd.) were dispersed and dissolved in 50 g of dichloromethane. did. The integrally molded rubber plate of the coating jig was made of fluororubber, had the shape shown in FIG. 2, and had the dimensions shown in Table 1 corresponding to the outer diameter of the substrate. At this time, the substrate was pulled up at a speed of 8 mm/sec to obtain a coating film with a thickness of about 0.2 μm.
【００１５】比較のために、一体成形ゴム板のかわりに
、ふっ素ゴム板から一体成形ゴム板と同径で中央に同径
の穴を有するように打ち抜いた打ち抜きゴム板を取り付
けた塗布治具を用いて同様に各基体外表面に塗膜を形成
した。For comparison, instead of the integrally molded rubber plate, a coating jig was used in which a punched rubber plate was attached, which was punched out from a fluorocarbon rubber plate and had a hole of the same diameter in the center as the integrally molded rubber plate. A coating film was similarly formed on the outer surface of each substrate using the same method.
【００１６】このようにして形成された塗膜についてそ
の塗布性を調べた結果を表２に示す。表２において塗布
性の良好なものは〇印、塗膜に傷の生じたものは×印で
示した。Table 2 shows the results of examining the coating properties of the coating films thus formed. In Table 2, those with good applicability are marked with a circle, and those with scratches on the coating film are marked with an x.
【００１７】次に、これらの塗膜を電荷発生層とし、そ
の上に電荷輸送層を塗布形成して電子写真用感光体とし
、これらの感光体について画像出しを行って画像品質を
評価した。その結果を同じく表２に示す。画像品質の良
好なものを〇印、白スジ，黒スジなどが見られ画像不良
のものを×印で示した。Next, these coating films were used as charge generation layers, and a charge transport layer was coated thereon to prepare electrophotographic photoreceptors. Images were formed on these photoreceptors to evaluate image quality. The results are also shown in Table 2. Those with good image quality are marked with an ○, and those with poor image quality such as white stripes or black stripes are marked with an x.
【００１８】[0018]
【表２】[Table 2]
【００１９】表２より、塗布治具に一体成形ゴム板を用
いる優位性は明らかである。From Table 2, the advantage of using an integrally molded rubber plate for the coating jig is clear.
【００２０】[0020]
【発明の効果】この発明によれば、円筒状基体外表面に
塗膜を形成する塗布装置であて、円筒状基体の外表面を
内壁とし、この基体を取り囲む外壁と、その内縁部先端
が基体外表面に圧接摺動する穴を有する底部とで塗布材
貯留部が形成され、少なくとも底部の穴を有する部分が
弾性のある一体成形ゴム板からなる塗布治具を備えた塗
布装置とする。このような塗布装置を用い、塗布材貯留
部に塗布材を必要量逐次供給しながら円筒状基体を鉛直
方向に塗布治具に対して相対的に引き上げ、基体外表面
に塗膜を形成することにより、従来の浸漬法において必
要としていた多量の余分の塗布材を要しなくなり、使用
する塗布材の量を大幅に低減でき、かつ、新しい塗布材
を逐次供給しながら塗布が行われるので塗布材の汚染の
心配もなくなる。また、基体外表面を弾性のある一体成
形ゴムの穴の内縁部先端が圧接摺動するので基体外表面
に沿っての塗布材の漏洩はなくなり、基体の引きあげ速
度，塗布材の粘度を自由に選択することができ、膜厚の
制御が高精度かつ広範囲で可能となる。特に一体成形ゴ
ム板の中央の穴の内縁部を基体が鉛直に引きあげられる
のを妨げない方向に傾斜させ、かつ、その先端に丸みを
もたせることにより基体の引きあげを円滑に行うことが
でき、塗膜の均一性をより向上させることが可能となる
。このような塗布装置により膜質が均質で均一な膜厚の
塗膜を円筒状基体外表面に安定的に形成することが可能
となり、電子写真用感光体の製造に極めて有効である。According to the present invention, there is provided a coating device for forming a coating film on the outer surface of a cylindrical substrate. The coating device includes a coating material storage portion formed by a bottom portion having a hole that slides in pressure contact with the external surface of the body, and at least a portion of the bottom portion having the hole is made of an elastic integrally molded rubber plate. Using such a coating device, the cylindrical substrate is lifted vertically relative to the coating jig while sequentially supplying the necessary amount of coating material to the coating material storage section, and a coating film is formed on the outer surface of the substrate. This eliminates the need for a large amount of extra coating material, which was required in the conventional dipping method, and significantly reduces the amount of coating material used.Also, since the coating is performed while continuously supplying new coating material, it is possible to reduce the amount of coating material used. There is no need to worry about contamination. In addition, since the tip of the inner edge of the hole in the elastic integrally molded rubber slides against the outer surface of the base, there is no leakage of the coating material along the outer surface of the base, and the pulling speed of the base and the viscosity of the coating material can be adjusted freely. The film thickness can be controlled with high precision and over a wide range. In particular, by slanting the inner edge of the hole in the center of the integrally molded rubber plate in a direction that does not prevent the base from being pulled up vertically, and by rounding the tip, the base can be pulled up smoothly. It becomes possible to further improve the uniformity of the film. Such a coating device makes it possible to stably form a coating film of uniform quality and uniform thickness on the outer surface of a cylindrical substrate, and is extremely effective in manufacturing electrophotographic photoreceptors.
【図１】この発明の塗布装置の一実施例の概念的断面図
FIG. 1 is a conceptual cross-sectional view of an embodiment of the coating device of the present invention.
【図２】一体成形ゴム板の一例の部分横断面図[Figure 2] Partial cross-sectional view of an example of an integrally molded rubber plate
１ 基体 ２ 塗布治具 ３ 塗布液供給部 ４ 塗布液 ５ 塗膜 １１ 基体外表面 ２１ 外壁 ２２ 底部 ２３ 一体成形ゴム板 ２４ 押さえ板 ２５ 塗布液貯留部 1 Base 2 Application jig 3 Coating liquid supply section 4 Coating liquid 5 Coating film 11 Base outer surface 21 External wall 22 Bottom 23 integrated rubber plate 24 Holding plate 25 Coating liquid storage part
Claims (3)
置であって、鉛直方向に引き上げられる基体の外表面を
内壁とし、この基体を取り囲む外壁と、少なくとも基体
外表面に摺動可能に圧接する部分が、中央に穴を有し、
この穴を通して基体が穴の内縁部先端と基体外表面とが
圧接摺動するように引きあげられる弾性のある一体成形
ゴム板からなる底面とで、塗布材貯留部が形成される塗
布治具を備えたことを特徴とする塗布装置。1. A coating device for forming a coating film on the outer surface of a cylindrical substrate, wherein the outer surface of the substrate that is pulled up in the vertical direction is an inner wall, and the coating device is slidable on the outer wall surrounding the substrate and at least on the outer surface of the substrate. The part that comes into pressure contact with has a hole in the center,
The base is pulled up through this hole so that the tip of the inner edge of the hole slides into pressure contact with the outer surface of the base, and the bottom is made of an elastic, integrally molded rubber plate. A coating device characterized by:
が鉛直方向に引きあげられるのを妨げない方向に傾斜し
ていることを特徴とする請求項１記載の塗布装置。2. The coating device according to claim 1, wherein the inner edge of the central hole of the integrally molded rubber plate is inclined in a direction that does not prevent the base from being pulled up in the vertical direction.
圧接する内縁部先端が丸みを有することを特徴とする請
求項１または２記載の塗布装置。3. The coating device according to claim 1, wherein the tip of the inner edge of the central hole of the integrally molded rubber plate that comes into pressure contact with the outer surface of the base body is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP663091A JPH04243572A (en) | 1991-01-24 | 1991-01-24 | Coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP663091A JPH04243572A (en) | 1991-01-24 | 1991-01-24 | Coating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04243572A true JPH04243572A (en) | 1992-08-31 |
Family
ID=11643683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP663091A Pending JPH04243572A (en) | 1991-01-24 | 1991-01-24 | Coating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04243572A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116578A (en) * | 1993-10-27 | 1995-05-09 | Yamada Seisakusho Kk | Device for coating thin rod such as chopsticks |
| JP2005270807A (en) * | 2004-03-24 | 2005-10-06 | Fuji Xerox Co Ltd | Cyclic applicator and cyclic application method |
-
1991
- 1991-01-24 JP JP663091A patent/JPH04243572A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116578A (en) * | 1993-10-27 | 1995-05-09 | Yamada Seisakusho Kk | Device for coating thin rod such as chopsticks |
| JP2005270807A (en) * | 2004-03-24 | 2005-10-06 | Fuji Xerox Co Ltd | Cyclic applicator and cyclic application method |
| JP4599863B2 (en) * | 2004-03-24 | 2010-12-15 | 富士ゼロックス株式会社 | Annular coating device, annular coating method |
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