JPS649622B2 - - Google Patents
Info
- Publication number
- JPS649622B2 JPS649622B2 JP15440177A JP15440177A JPS649622B2 JP S649622 B2 JPS649622 B2 JP S649622B2 JP 15440177 A JP15440177 A JP 15440177A JP 15440177 A JP15440177 A JP 15440177A JP S649622 B2 JPS649622 B2 JP S649622B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- solvent
- photoreceptor
- coating
- coating film
- 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
- 239000011248 coating agent Substances 0.000 claims description 36
- 238000000576 coating method Methods 0.000 claims description 36
- 239000002904 solvent Substances 0.000 claims description 26
- 108091008695 photoreceptors Proteins 0.000 claims description 23
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- VHQGURIJMFPBKS-UHFFFAOYSA-N 2,4,7-trinitrofluoren-9-one Chemical compound [O-][N+](=O)C1=CC([N+]([O-])=O)=C2C3=CC=C([N+](=O)[O-])C=C3C(=O)C2=C1 VHQGURIJMFPBKS-UHFFFAOYSA-N 0.000 description 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Coating Apparatus (AREA)
Description
【発明の詳細な説明】
本発明はドラム外周に電子写真用感光体塗膜を
形成する塗装装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating apparatus for forming an electrophotographic photoreceptor coating on the outer periphery of a drum.
近年電子写真用感光体としては種々の有機材
料、無機材料が発表されている。この感光体材料
の塗膜を導電性支持体であるドラム上に２〜
100μｍの厚さで形成する場合に、従来は感光体
材料、可塑剤、および結着剤を有機溶媒に溶解ま
たは分散させた感光体溶液をドラム表面にスプレ
ー方式等により塗布している。 In recent years, various organic and inorganic materials have been announced as photoreceptors for electrophotography. A coating film of this photoreceptor material is placed on a drum, which is a conductive support, for 2 to 30 minutes.
When forming a drum with a thickness of 100 μm, conventionally, a photoreceptor solution in which a photoreceptor material, a plasticizer, and a binder are dissolved or dispersed in an organic solvent is applied to the drum surface by a spray method or the like.
しかし、溶媒として用いられるテトラビドロフ
ラン、ベンゼン、トルエン、メチルケトン、１，
２−ジクロロエタン等は比較的沸点が低く、これ
らの溶媒を用いた感光体溶液がスプレーガンから
ドラム表面に到達するまでに溶媒がなくなり粉体
に近い状態でドラム表面に付着する。このため塗
膜の表面は凹凸となり平滑な面が得られず、粒界
域が生じ充分な光感度が得られない。また溶媒の
消失を防止するため感光体溶液中の溶媒含有量を
増すと逆にドラム表面に対する溶媒の付着量が増
大し、感光体溶液が流れて均一な膜厚が得られな
い。 However, tetrahydrofuran, benzene, toluene, methyl ketone, 1,
2-dichloroethane and the like have a relatively low boiling point, and by the time the photoreceptor solution using these solvents reaches the drum surface from the spray gun, the solvent is gone and it adheres to the drum surface in a state similar to powder. As a result, the surface of the coating film becomes uneven, making it impossible to obtain a smooth surface, and grain boundary regions occur, making it impossible to obtain sufficient photosensitivity. Furthermore, if the solvent content in the photoreceptor solution is increased in order to prevent the solvent from disappearing, the amount of solvent adhering to the drum surface will increase, and the photoreceptor solution will flow, making it impossible to obtain a uniform film thickness.
本発明はこれらの問題を解決するためのもの
で、平滑度の極めて高い塗膜を形成できる電子写
真用感光体ドラムの塗装装置を提供することを目
的としている。 The present invention is intended to solve these problems, and it is an object of the present invention to provide a coating apparatus for electrophotographic photoreceptor drums that can form a coating film with extremely high smoothness.
次に図面に関連して本発明の実施例を説明す
る。 Embodiments of the invention will now be described with reference to the drawings.
第１図において、１はドラムで、該ドラム１は
駆動源２によりベルト３を介し駆動されて矢印方
向に一定の速さで回転する。ドラム１上にはコー
テイングブレード４が上下動可能に設けられ、該
コーテイングブレード４は感光体溶液を収納する
タンク５とホース６を介し接続されている。タン
ク５は密閉状のもので、その上部は外気および真
空源と切換可能に接続されている。またドラム１
には半円筒形状の鏡面作成板７が所定の空隙を介
し対向しており、この鏡面作成板７の下部には溶
媒溜め８が設けられている。溶媒溜め８には感光
体溶液に使用されたものと同じ溶媒または他種の
溶媒が収納され、この溶媒の蒸気は鏡面作成板７
の底部に設けられた孔よりドラム１と鏡面作成板
７との間の空隙内に進入するようになつている。
溶媒溜め８に収納される溶媒の種類によつては該
溶媒を加熱して蒸気圧を上げることも可能であ
る。 In FIG. 1, reference numeral 1 denotes a drum, and the drum 1 is driven by a drive source 2 via a belt 3 to rotate at a constant speed in the direction of the arrow. A coating blade 4 is provided on the drum 1 so as to be movable up and down, and the coating blade 4 is connected via a hose 6 to a tank 5 containing a photoreceptor solution. The tank 5 is hermetically sealed, and its upper portion is switchably connected to outside air and a vacuum source. Also drum 1
A semi-cylindrical mirror surface forming plate 7 is opposed to the mirror surface forming plate 7 with a predetermined gap therebetween, and a solvent reservoir 8 is provided at the lower part of this mirror surface forming plate 7. The solvent reservoir 8 stores the same solvent as that used for the photoreceptor solution or another type of solvent, and the vapor of this solvent is transferred to the mirror surface forming plate 7.
It enters into the gap between the drum 1 and the mirror surface creating plate 7 through a hole provided at the bottom of the drum 1.
Depending on the type of solvent stored in the solvent reservoir 8, it is also possible to heat the solvent to increase its vapor pressure.
上述の各部材は図示しない密閉容器内に収納さ
れる。 Each of the above-mentioned members is housed in a closed container (not shown).
本発明に係る塗装装置は以上のように構成され
るが、次にその作用について説明する。 The coating apparatus according to the present invention is constructed as described above, and its operation will be explained next.
いま、コーテイングブレード４をドラム１に近
接する位置に位置決めしてドラム１を回転させ、
タンク５を大気と接続して該タンク５よりコーテ
イングブレード４に感光体溶液を供給すると、ド
ラム１の表面には塗膜９が形成される。この塗膜
９の厚さは、ドラム１とコーテイングブレード４
との間隙、ドラム１の回転速度等を制御すること
によつて所望の値とすることができる。塗膜９が
ドラム１の全周に形成されたところでコーテイン
グブレード４を退避させる。このとき、感光体溶
液の表面張力によつてコーテイングブレード４と
塗膜９との間に感光体溶液が存在するが、この余
分の感光体溶液は、タンク５を真空源と接続する
ことによつてタンク５に吸引回収する。従つて塗
膜９の継ぎ目には段差が生じない。これらの過程
において、ドラム１の外周は溶媒溜め８から発生
してドラム１と鏡面作成板７の間に進入する溶媒
蒸気に覆われるため、塗膜９中の溶媒が急速に蒸
発することはなく、塗膜９の表面は平滑になる。
最後に、密閉容器内の溶媒蒸気圧を下げて塗膜を
乾燥するが、この場合溶媒蒸気圧の急激な変化は
塗膜の正常な生成を妨げるので、溶媒蒸気圧の変
化速度を制御して乾燥を行なう。このようにして
感光体ドラムが形成される。 Now, the coating blade 4 is positioned close to the drum 1 and the drum 1 is rotated.
When the tank 5 is connected to the atmosphere and the photoreceptor solution is supplied from the tank 5 to the coating blade 4, a coating film 9 is formed on the surface of the drum 1. The thickness of this coating film 9 is the same as that between the drum 1 and the coating blade 4.
A desired value can be obtained by controlling the gap between the drum 1 and the drum 1, the rotational speed of the drum 1, etc. When the coating film 9 is formed around the entire circumference of the drum 1, the coating blade 4 is retracted. At this time, the photoreceptor solution exists between the coating blade 4 and the coating film 9 due to the surface tension of the photoreceptor solution, but this excess photoreceptor solution can be removed by connecting the tank 5 to a vacuum source. Then, it is collected by suction into tank 5. Therefore, no level differences occur at the joints of the coating film 9. During these processes, the outer periphery of the drum 1 is covered with solvent vapor that is generated from the solvent reservoir 8 and enters between the drum 1 and the mirror-finishing plate 7, so that the solvent in the coating film 9 does not evaporate rapidly. , the surface of the coating film 9 becomes smooth.
Finally, the coating film is dried by lowering the solvent vapor pressure in the closed container, but in this case, rapid changes in solvent vapor pressure prevent the normal formation of a coating film, so the rate of change in solvent vapor pressure is controlled. Dry. In this way, a photoreceptor drum is formed.
この装置により生成された塗膜の表面粗さを第
２図ａに示す。第２図ｂは鏡面作成板７を取外し
た場合の塗膜の表面粗さである。この両者を比較
すれば鏡面作成板の効果は明白である。 The surface roughness of the coating film produced by this device is shown in Figure 2a. FIG. 2b shows the surface roughness of the coating film when the mirror surface creating plate 7 is removed. If you compare the two, the effect of the mirror surface creation plate will be obvious.
なお、本実験の条件は次の通りである。 The conditions of this experiment were as follows.
感光体溶液の組成；
ポリ−Ｎ−ビニルカルバゾール（BASF社
Luvican Ｍ−170） 10ｇ
２，４，７−トリニトロ−９−フルオレノン
（Eastman Kodak社） 14ｇ
アクリル樹脂（三菱レイヨンBR−107） ２ｇ
テトラヒドロフラン（関東化学）
塗装条件；
ドラム回転速度 300r.p.m.
感光体溶液供給量 10ml／min
溶媒溜め中の溶媒；
テトラヒドロフラン
塗装結果；
膜厚 20μｍ
膜厚のばらつき 円周方向 ±0.7μｍ
軸方向 ±0.5μｍ
以上述べたように、本発明によれば、ドラムの
表面に平滑度の極めて高い感光体塗膜を形成でき
る。Composition of photoreceptor solution: Poly-N-vinylcarbazole (BASF)
Luvican M-170) 10g 2,4,7-trinitro-9-fluorenone (Eastman Kodak) 14g Acrylic resin (Mitsubishi Rayon BR-107) 2g Tetrahydrofuran (Kanto Kagaku) Coating conditions: Drum rotation speed 300r.pm Photoreceptor solution Supply amount 10ml/min Solvent in solvent reservoir; Tetrahydrofuran coating result; Film thickness 20μm Film thickness variation Circumferential direction ±0.7μm Axial direction ±0.5μm As described above, according to the present invention, the surface of the drum is smooth. It is possible to form a photoreceptor coating film with extremely high quality.
第１図は本発明に係る電子写真用感光体ドラム
の塗装装置の実施例を示す斜視図、第２図は第１
図の装置により塗装された塗膜の表面粗さの測定
グラフである。
図中、１はドラム、２は駆動源、４はコーテイ
ングブレード、５はタンク、６はホース、７は鏡
面作成板、８は溶媒溜め、９は塗膜である。
FIG. 1 is a perspective view showing an embodiment of a coating apparatus for an electrophotographic photosensitive drum according to the present invention, and FIG.
It is a measurement graph of the surface roughness of a coating film painted by the apparatus shown in the figure. In the figure, 1 is a drum, 2 is a driving source, 4 is a coating blade, 5 is a tank, 6 is a hose, 7 is a mirror surface forming plate, 8 is a solvent reservoir, and 9 is a coating film.
Claims (1)
るドラムを支持して一定速度で回転させる駆動機
構、前記ドラム上に上下動可能に設けられたコー
テイングブレード、前記コーテイングブレードに
感光体溶液を供給または回収する感光体溶液供給
源、前記ドラムの外周に所定の空隙を介し対向す
る半円筒状の鏡面作成板、前記鏡面作成板に取付
けられ、前記空隙内に溶媒蒸気を供給するための
溶媒を収納する溶媒溜めよりなることを特徴とす
る電子写真用感光体ドラムの塗装装置。1. A drive mechanism that supports a drum on which an electrophotographic photoreceptor coating film is to be formed on its outer periphery and rotates it at a constant speed, a coating blade that is movable up and down on the drum, and a photoreceptor solution applied to the coating blade. a photoreceptor solution supply source to be supplied or recovered; a semi-cylindrical mirror surface forming plate facing the outer periphery of the drum with a predetermined gap therebetween; a solvent attached to the mirror surface forming plate for supplying solvent vapor into the gap; 1. A coating device for an electrophotographic photoreceptor drum, comprising a solvent reservoir containing a solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15440177A JPS5487229A (en) | 1977-12-23 | 1977-12-23 | Coating device of photo sensitive drum for zerography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15440177A JPS5487229A (en) | 1977-12-23 | 1977-12-23 | Coating device of photo sensitive drum for zerography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5487229A JPS5487229A (en) | 1979-07-11 |
| JPS649622B2 true JPS649622B2 (en) | 1989-02-17 |
Family
ID=15583330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15440177A Granted JPS5487229A (en) | 1977-12-23 | 1977-12-23 | Coating device of photo sensitive drum for zerography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5487229A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6093441A (en) * | 1983-10-28 | 1985-05-25 | Konishiroku Photo Ind Co Ltd | Coating method and device of base material or the like of electrophotographic recording material |
| JPH0614188B2 (en) * | 1983-10-28 | 1994-02-23 | コニカ株式会社 | Method and apparatus for coating electrophotographic recording material substrate, etc. |
| JPH067265B2 (en) * | 1983-10-28 | 1994-01-26 | コニカ株式会社 | Electrophotographic recording material base material coating device |
| JPS60146237A (en) * | 1984-01-10 | 1985-08-01 | Konishiroku Photo Ind Co Ltd | Coating method and its device of electrophotographic recording body base material or the like |
-
1977
- 1977-12-23 JP JP15440177A patent/JPS5487229A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5487229A (en) | 1979-07-11 |
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