JP2604743B2 - Continuous production method of photoreceptor drum - Google Patents
Continuous production method of photoreceptor drumInfo
- Publication number
- JP2604743B2 JP2604743B2 JP62111668A JP11166887A JP2604743B2 JP 2604743 B2 JP2604743 B2 JP 2604743B2 JP 62111668 A JP62111668 A JP 62111668A JP 11166887 A JP11166887 A JP 11166887A JP 2604743 B2 JP2604743 B2 JP 2604743B2
- Authority
- JP
- Japan
- Prior art keywords
- insulating resin
- photoreceptor
- resin
- resin coating
- molded product
- 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 - Lifetime
Links
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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、感光体ドラムの連続的製造方法に関する。
詳しくは、特定の成形法で熱硬化性樹脂からなる素管を
製造し、引き続き連続的に感光体ドラムとする方法に関
する。Description: TECHNICAL FIELD The present invention relates to a method for continuously manufacturing a photosensitive drum.
More specifically, the present invention relates to a method of manufacturing a raw tube made of a thermosetting resin by a specific molding method, and subsequently continuously forming a photosensitive drum.
従来、感光体ドラムは、感光体層の基板となる素管を
最終の感光体ドラムの形状と同じ長さの短管としたの
ち、その表面の平滑度やドラムの真直度等の精度を高い
ものとする加工を行った後にその上に感光体層を設ける
ことにより製造されていた。Conventionally, the photosensitive drum has a short tube having the same length as the shape of the final photosensitive drum, and then has a high accuracy such as the smoothness of the surface and the straightness of the drum. It has been manufactured by providing a photoreceptor layer thereon after performing a process for making the same.
一方、感光体材料としては安価でしかも安全な有機感
光体材料の進歩が目覚ましく、有機感光体を必要に応じ
適当なバインダーとともに溶解或いは分散した塗液を素
管上に塗布するだけで優れた性能の感光体ドラムを作る
ことが可能となっている。On the other hand, the development of inexpensive and safe organic photoreceptor materials has been remarkable as a photoreceptor material, and excellent performance can be achieved simply by applying a coating solution obtained by dissolving or dispersing an organic photoreceptor together with an appropriate binder if necessary onto a raw tube. It is possible to make a photosensitive drum.
しかしながら、短管とした素管は感光体塗液を塗布す
るのが難しく、種々の工夫が成されている（例えば、特
開昭59−4467号公報、同61−25149号公報等）が、工業
的規模での実施と言う面では甚だ不充分なものと言わざ
るを得ない。However, it is difficult to apply the photoreceptor coating liquid to the short tube, and various devices have been devised (for example, JP-A-59-4467 and JP-A-61-25149). It must be said that it is extremely inadequate in terms of implementation on an industrial scale.
本発明者らは、上記問題点を解決する方法につき鋭意
検討した結果、特定の方法で製造した円筒状の成形物を
用い、特定の方法を適用すると連続的に容易に感光体ド
ラムを製造しうることを見出し、本発明を完成した。The present inventors have conducted intensive studies on a method for solving the above problems, and as a result, by using a cylindrical molded product manufactured by a specific method and applying a specific method, a photosensitive drum can be easily manufactured continuously and easily. The present invention has been completed, and the present invention has been completed.
即ち、本発明は、先端部に平滑部を有するスクリュー
を有する押し出し成形機よりカーボンを分散した熱硬化
性樹脂を押し出し成形硬化して得た円筒状の成形物を、
直接、絶縁性樹脂塗液を入れた底部に該円筒状成形物の
外径より僅かに大きい径の貫通孔を有する浸漬槽からな
る絶縁性樹脂塗液を塗布する手段に導入して絶縁性樹脂
塗膜を形成し、それに続く乾燥手段にて該絶縁性樹脂塗
膜を乾燥し、次いで少なくとも１つの、感光体塗液を入
れた底部に該円筒状成形物の外径より僅かに大きい径の
貫通孔を有する浸漬槽からなる感光体塗液を塗布する手
段にて該絶縁性樹脂塗膜の上に少なくとも１つの感光体
層を形成することを特徴とする感光体ドラムを連続的に
製造する方法である。That is, the present invention provides a cylindrical molded product obtained by extruding and curing a thermosetting resin in which carbon is dispersed from an extruder having a screw having a smooth portion at a tip end,
The insulating resin coating liquid is introduced directly into the means for applying an insulating resin coating liquid comprising a dipping tank having a through-hole having a diameter slightly larger than the outer diameter of the cylindrical molded product at the bottom portion containing the insulating resin coating liquid. A coating film is formed, followed by drying the insulating resin coating film by a drying means. Then, at least one of the bottoms containing the photoconductor coating liquid has a diameter slightly larger than the outer diameter of the cylindrical molded product. A photoreceptor drum is continuously manufactured by forming at least one photoreceptor layer on the insulating resin coating film by means of applying a photoreceptor coating solution comprising a dipping tank having a through hole. Is the way.
本発明において重要な先端部び平滑部を有するスクリ
ューを有する押し出し成形機、及びそれを用いた熱硬化
性樹脂を成形する方法については既に公知であり、例え
ば、特開昭59−178235号公報等が例示される。An extrusion molding machine having a screw having a tip portion and a smooth portion important in the present invention, and a method of molding a thermosetting resin using the same are already known, for example, JP-A-59-178235 and the like. Is exemplified.
ここで表面の平滑度とか、真直度とかと言った感光体
ドラム用の素管として重要な精度を有する成形物とする
ためには、例えば、上述のスクリュウーの平滑部におい
て押し出しと同時に自己形状を保持できる程度にまで賦
形硬化させること、そのため熱硬化性樹脂の種類に応じ
押し出し成形機での温度を設定することなどが重要であ
る。ここで熱硬化性樹脂としてはフェノール樹脂、メラ
ミン樹脂、尿素樹脂、不飽和ポリエステル樹脂、エポキ
シ樹脂、シリコン樹脂、アリル樹脂、キシレン樹脂、ア
ニリン樹脂およびポリエチレン樹脂、ポリプロピレン樹
脂、ポリスチレン樹脂、ポリ塩化ビニル樹脂等の熱可塑
性樹脂に架橋剤を加えたもの等が例示され、特にフェノ
ール樹脂、メラミン樹脂が好適に使用される。Here, in order to obtain a molded product having an important precision as a raw material tube for a photosensitive drum, such as surface smoothness or straightness, for example, the self-shape is formed simultaneously with the extrusion in the above-described screw smooth portion. It is important to shape-harden the resin to such an extent that it can be maintained, and to set the temperature in the extrusion molding machine according to the type of the thermosetting resin. Here, as the thermosetting resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, epoxy resin, silicone resin, allyl resin, xylene resin, aniline resin and polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin Examples thereof include those obtained by adding a cross-linking agent to a thermoplastic resin such as a phenol resin and a melamine resin.
またこれらのものを用いて後述の方法により連続的に
感光体ドラムとするには、素管の表面で測定した抵抗が
108Ω・cm以下、特に106Ω・cm以下であることが要求さ
れ、そのため、カーボンをその種類にもよるが全成形物
中に３〜30wt％分散することが必要である。In addition, in order to continuously form a photosensitive drum using the above-described method by a method described later, the resistance measured on the surface of the raw tube is not sufficient.
It is required to be 10 8 Ω · cm or less, especially 10 6 Ω · cm or less. Therefore, it is necessary to disperse carbon in all the molded products in an amount of 3 to 30% by weight, depending on the type.
本発明においては、上述の方法で連続的に得られる素
管は次いで絶縁樹脂塗液を塗布する手段により連続的に
絶縁樹脂塗液が塗布され次いで乾燥することで絶縁樹脂
塗膜が形成される。この手段としては底部に感光体素管
の外径より僅かに大径の貫通孔を有し内部に塗液を入れ
られる浸漬槽を設け、該貫通孔に素管を通じ移動させる
ことで行うのが一般的である。In the present invention, the base tube continuously obtained by the above-described method is then coated with the insulating resin coating liquid continuously by means of applying the insulating resin coating liquid, and then dried to form the insulating resin coating film. . This is achieved by providing a through-hole at the bottom slightly larger in diameter than the outer diameter of the photoreceptor base tube, providing an immersion tank in which the coating liquid can be filled, and moving the base tube through the through-hole. General.
この絶縁樹脂塗膜は、カーボンを分散した熱硬化性樹
脂からなる素管を用いる際に重要であり、これが無いと
感光体ドラムとした時その性能が充分に発揮されない。This insulating resin coating film is important when using a raw tube made of a thermosetting resin in which carbon is dispersed, and without this, the performance of the photosensitive drum is not sufficiently exhibited when the photosensitive drum is used.
本発明においては次いで絶縁樹脂塗膜を乾燥する手段
により連続的に塗膜が乾燥される。乾燥方法としては特
に制限は無いが塗膜が乾燥中に変形しないように強い熱
風を送ることは避けなければならない。In the present invention, the coating film is continuously dried by means for drying the insulating resin coating film. Although there is no particular limitation on the drying method, it is necessary to avoid sending strong hot air so that the coating film does not deform during drying.
本発明においては次いで感光体塗液を塗布する手段に
よって感光体が塗布される。この方法については上記絶
縁樹脂塗液を塗布するのと同様の方法でよい。又感光体
の層を多層とする、いわゆる、複層型の感光体とするに
は、塗布手段に続けて、乾燥手段を設け、更に感光体塗
液を塗布する手段を繰り返すことで行われる。In the present invention, the photoreceptor is then applied by means for applying a photoreceptor coating solution. This method may be the same as the method for applying the insulating resin coating liquid. In order to form a so-called multi-layer type photoreceptor having a plurality of photoreceptor layers, a drying unit is provided after the coating unit, and a unit for applying a photoreceptor coating liquid is repeated.
以下、本発明の方法を図面を用いて更に詳しく説明す
る。Hereinafter, the method of the present invention will be described in more detail with reference to the drawings.
第１図は本発明の方法を実施するに好適な装置の１例
である。FIG. 1 is an example of an apparatus suitable for carrying out the method of the present invention.
図において、１は先端部に平滑部を有するスクリュー
であり、２は押し出し機を加熱するためのヒーター、３
は成形材料を導入するためのホッパー、４はモーター、
５はバレルを示す。In the figure, 1 is a screw having a smooth portion at the tip, 2 is a heater for heating the extruder, 3
Is a hopper for introducing molding material, 4 is a motor,
5 indicates a barrel.
この感光体ドラム用の素管を形成するに十分な精度の
円筒状成形物を製造することの可能な装置については、
例えば特開昭59−230734号公報、同61−16828号公報、
同61−44622号公報、同61−44623号公報等に開示された
ものが例示でき、例えば、80mmの内径のバレルを有する
ものを使用すれば、外径80mmの円筒形の成形物が12m/hr
程度の生産速度で得られる。For an apparatus capable of manufacturing a cylindrical molded product with sufficient precision to form a raw tube for the photosensitive drum,
For example, JP-A-59-230734, JP-A-61-16828,
Nos. 61-44622 and 61-44623 can be exemplified.For example, if a material having a barrel with an inner diameter of 80 mm is used, a cylindrical molded product with an outer diameter of 80 mm is 12 m / m. hr
It can be obtained at a moderate production rate.
第１図において、６は絶縁性樹脂塗液を塗布するに好
適な温度で塗布手段を素管が通過できるように温度を制
御する装置を示し、７は絶縁性樹脂塗液を入れる為の浸
漬槽を示し、８は塗液が漏れないようにするためのもの
であり、例えば、Ｏ−リングのようなものが利用され
る。この槽７に素管を通過させることで絶縁樹脂塗液が
塗布される。10は絶縁性樹脂塗液を示し、９は塗膜を乾
燥するための手段、例えばヒーターである。11、12は同
様の形状の浸漬槽および漏れ防止機構を示し、13は感光
体塗液を示す。この感光体塗液を入れた浸漬槽11を必要
に応じ９と同様の乾燥手段と交互に設けることで多層の
感光体ドラムを製造することも可能である。In FIG. 1, reference numeral 6 denotes a device for controlling the temperature so that the base tube can pass through the coating means at a temperature suitable for applying the insulating resin coating liquid, and 7 denotes a dipping for introducing the insulating resin coating liquid. Reference numeral 8 denotes a tank for preventing the coating liquid from leaking. For example, an O-ring is used. The insulating resin coating liquid is applied by passing the raw tube through the tank 7. Reference numeral 10 denotes an insulating resin coating liquid, and 9 denotes a means for drying the coating film, for example, a heater. Reference numerals 11 and 12 denote immersion tanks and leak prevention mechanisms having the same shape, and reference numeral 13 denotes a photoconductor coating liquid. By providing the immersion tank 11 containing the photoreceptor coating solution alternately with the same drying means as in 9 if necessary, a multilayer photoreceptor drum can be manufactured.
実施例１ レゾール樹脂40％、クレー20％、カーボン20％および
ガラス樹脂20％からなる樹脂混合物を用い、上述の装置
（80mmの径のスクリューを有する。）で12m/hrで素管を
製造し、ついでカゼインのアルカリ水溶液（5wt％）を
絶縁樹脂塗液として用い絶縁層を形成し、その上に4,
4′−ビス〔２−ヒドロキシ−３−（2,4−ジメチルフェ
ニル）カルバモイル−１−ナフチルアゾ〕−1,4−ジス
チルベンゼン顔料の塗液（顔料10wt％と東洋紡（株）製
ポリエステル樹脂“バイロン200"10wt％を分散したシク
ロヘキサノン分散液）を塗布し、さらに３−（Ｎ−メチ
ル−Ｎ−フェニルヒドラゾン）メチル−９−エチルカル
バゾール溶液（該化合物20wt％と上記ポリエステル樹脂
20wt％を溶解したシクロヘキサノン溶液）を同様の操作
で塗布乾燥して連続的に感光体ドラムを製造した。Example 1 Using a resin mixture composed of 40% of resole resin, 20% of clay, 20% of carbon and 20% of glass resin, a raw tube was produced at 12 m / hr by the above-mentioned apparatus (having a screw having a diameter of 80 mm). Then, an alkaline aqueous solution of casein (5 wt%) is used as an insulating resin coating liquid to form an insulating layer, and 4,4
Coating liquid of 4'-bis [2-hydroxy-3- (2,4-dimethylphenyl) carbamoyl-1-naphthylazo] -1,4-distylbenzene pigment (10% by weight of pigment and polyester resin manufactured by Toyobo Co., Ltd.) Cyclohexanone dispersion in which 10% by weight of Byron 200 is dispersed) is applied, and a 3- (N-methyl-N-phenylhydrazone) methyl-9-ethylcarbazole solution (20% by weight of the compound and the above polyester resin)
A 20 wt% solution of cyclohexanone) was applied and dried in the same manner to continuously produce a photosensitive drum.
得られたドラムを複写機に合わせて輪切りにし、複写
機にセットして用いたところ全体にむらのないコピーが
得られた。The obtained drum was cut into a slice according to the copying machine, and was set and used in the copying machine. As a result, an even copy was obtained.
本発明を実施することにより感光体ドラムが容易に連
続的に得られ工業的に極めて価値がある。By carrying out the present invention, a photosensitive drum can be easily and continuously obtained, and is extremely valuable industrially.
第１図は本発明の方法を実施するに好適な装置の１例を
示す概念図である。FIG. 1 is a conceptual diagram showing an example of an apparatus suitable for carrying out the method of the present invention.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−63945（ＪＰ，Ａ) 特開 昭59−230734（ＪＰ，Ａ) 特開 昭61−16828（ＪＰ，Ａ) 特開 昭59−178235（ＪＰ，Ａ) 特開 昭61−204635（ＪＰ，Ａ) 特開 昭61−178059（ＪＰ，Ａ) 特開 昭61−20044（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-63945 (JP, A) JP-A-59-230734 (JP, A) JP-A-61-16828 (JP, A) 178235 (JP, A) JP-A-61-204635 (JP, A) JP-A-61-178059 (JP, A) JP-A-61-20044 (JP, A)
Claims (1)
る押し出し成形機よりカーボンを分散した熱硬化性樹脂
を押し出し成形硬化して得た円筒状の成形物を、直接、
絶縁性樹脂塗液を入れた底部に該円筒状成形物の外径よ
り僅かに大きい径の貫通孔を有する浸漬槽からなる絶縁
性樹脂塗液を塗布する手段に導入して絶縁性樹脂塗膜を
形成し、それに続く乾燥手段にて該絶縁性樹脂塗膜を乾
燥し、次いで少なくとも１つの、感光体塗液を入れた底
部に該円筒状成形物の外径より僅かに大きい径の貫通孔
を有する浸漬槽からなる感光体塗液を塗布する手段にて
該絶縁性樹脂塗膜の上に少なくとも１つの感光体層を形
成することを特徴とする感光体ドラムを連続的に製造す
る方法。1. A cylindrical molded product obtained by extruding and curing a thermosetting resin in which carbon is dispersed by an extruder having a screw having a smooth portion at a tip portion,
The insulating resin coating film is introduced into the means for applying an insulating resin coating solution comprising a dipping tank having a through-hole having a diameter slightly larger than the outer diameter of the cylindrical molded product at the bottom containing the insulating resin coating solution. And then drying the insulating resin coating film by a drying means, and then forming at least one through-hole having a diameter slightly larger than the outer diameter of the cylindrical molded product in the bottom portion containing the photoconductor coating liquid. A method for continuously producing a photoreceptor drum, wherein at least one photoreceptor layer is formed on the insulating resin coating film by means of applying a photoreceptor coating solution comprising a dip tank having:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62111668A JP2604743B2 (en) | 1987-05-09 | 1987-05-09 | Continuous production method of photoreceptor drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62111668A JP2604743B2 (en) | 1987-05-09 | 1987-05-09 | Continuous production method of photoreceptor drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63278061A JPS63278061A (en) | 1988-11-15 |
| JP2604743B2 true JP2604743B2 (en) | 1997-04-30 |
Family
ID=14567153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62111668A Expired - Lifetime JP2604743B2 (en) | 1987-05-09 | 1987-05-09 | Continuous production method of photoreceptor drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604743B2 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863945A (en) * | 1981-10-14 | 1983-04-16 | Canon Inc | Electrophotographic receptor |
| JPS59230734A (en) * | 1983-06-14 | 1984-12-25 | Mitsui Toatsu Chem Inc | Screw type extrusion molding apparatus for thermosetting resin |
| JPH0611514B2 (en) * | 1983-03-29 | 1994-02-16 | 三井東圧化学株式会社 | Extrusion molding method of thermosetting resin |
| JPS6116828A (en) * | 1984-07-03 | 1986-01-24 | Mitsui Toatsu Chem Inc | Screw type extruding apparatus for thermosetting resin |
| JPS6120044A (en) * | 1984-07-06 | 1986-01-28 | Minolta Camera Co Ltd | Manufacture of photosensitive drum |
| JPS61178059A (en) * | 1985-01-31 | 1986-08-09 | Mita Ind Co Ltd | Apparatus for coating drum |
| JPH0648385B2 (en) * | 1985-03-07 | 1994-06-22 | キヤノン株式会社 | Electrophotographic photoconductor manufacturing equipment |
-
1987
- 1987-05-09 JP JP62111668A patent/JP2604743B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63278061A (en) | 1988-11-15 |
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