JPS6138964A - Photosensitive drum for electronic copying machine - Google Patents
Photosensitive drum for electronic copying machineInfo
- Publication number
- JPS6138964A JPS6138964A JP6465584A JP6465584A JPS6138964A JP S6138964 A JPS6138964 A JP S6138964A JP 6465584 A JP6465584 A JP 6465584A JP 6465584 A JP6465584 A JP 6465584A JP S6138964 A JPS6138964 A JP S6138964A
- Authority
- JP
- Japan
- Prior art keywords
- fins
- drum
- cylinder
- photosensitive drum
- side edges
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
- G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は電子写真法を適用した電子複写機に用いられ
る静電感光ドラム、更に詳しくは外周面に透明絶縁層を
被覆した感光層を有する導電性支持体からなるドラム状
感光体に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an electrostatic photosensitive drum used in an electronic copying machine applying electrophotography, and more specifically, to an electrostatic photosensitive drum having a photosensitive layer whose outer peripheral surface is coated with a transparent insulating layer. The present invention relates to a drum-shaped photoreceptor made of a conductive support.
（従来の技術）
従来、この種の感光ドラムは、外周面に感光層を形成し
たアルミニウム等の金属からなる中空のシリンダが用い
られている。そしてこれを回転支承するために、該シリ
ンダの両端に別途形成した１対のフランジ部材を当て、
これらを複数本の締結ボルトで締結して前記シリンダと
一体化するとともに、フランジ部材に取付けたボールベ
アリング等の軸受を介して、ドラム軸に着脱自在に軸支
せしめるものとなされている。(Prior Art) Conventionally, this type of photosensitive drum uses a hollow cylinder made of metal such as aluminum and having a photosensitive layer formed on its outer peripheral surface. In order to rotationally support this, a pair of separately formed flange members is applied to both ends of the cylinder,
These are fastened with a plurality of fastening bolts to be integrated with the cylinder, and are removably supported on the drum shaft via a bearing such as a ball bearing attached to a flange member.
（従来技術の問題点）
近年、電子複写機の小型化の要請は益々強いものがあり
、それに伴って感光ドラムも小さくなりつつある。加え
て、感光ドラムによって転写紙に画像を転写したのち、
該転写紙上に静電付着した顕画像の加熱定着操作を、感
光ドラムの周りで行うものとすることにより、定着部を
別に設ける場合のスペースを削減しようと覆る試みもな
されている。しかるに、感光ドラムは、コロナ放電器や
ランプによって熱せられるのに加えて、周面に加熱定着
ロールが密接配置されるような場合には、益々その温度
が上昇される傾向を示すのに対し、前記のような従来の
感光ドラムでは、放熱性が悪いために、それ自体の小型
化による表面積の減少傾向とも相俟って、ドラムに過熱
現象を生じ易く、感光体の帯電性能が著しく低下し、あ
るいはドラム表面でトナーが溶融して複写紙への良好な
転写を阻害するというような問題点が生じている。(Problems with the Prior Art) In recent years, there has been an increasingly strong demand for miniaturization of electronic copying machines, and photosensitive drums are also becoming smaller accordingly. In addition, after transferring the image to transfer paper using a photosensitive drum,
Attempts have also been made to reduce the space required to provide a separate fixing section by heating and fixing the visible image electrostatically adhered to the transfer paper around the photosensitive drum. However, when a photosensitive drum is heated by a corona discharger or a lamp and in addition a heating fixing roll is placed closely around its circumference, its temperature tends to increase. Conventional photosensitive drums as described above have poor heat dissipation properties, which, combined with the tendency for surface area to decrease due to miniaturization of the drum itself, tends to cause overheating of the drum, resulting in a significant decline in the charging performance of the photosensitive drum. Alternatively, problems arise in that the toner melts on the drum surface and prevents good transfer to copy paper.
このような問題点に対して、ドラムの放熱性を上げるた
めに、そのシリンダ内面に放熱フィンとして作用する凸
条を一体形成する提案が既になされている（例えば特開
昭５４−１０３３５８号公報、実開昭５６−１２０５６
６号公報）が、このような一体成形フィンは、その数を
増すことに限度があり、所期するような感光ドラムの冷
却効果を実現しうるちのではなかった。To solve these problems, in order to improve the heat dissipation performance of the drum, proposals have already been made to integrally form protrusions that act as heat dissipation fins on the inner surface of the cylinder (for example, Japanese Patent Application Laid-Open No. 103358/1983, Utsukai Showa 56-12056
However, there is a limit to the number of integrally molded fins that can be increased, and it has not been possible to achieve the desired cooling effect on the photosensitive drum.
また、従来の感光ドラムでは、シリンダのほかに、これ
を軸支するために１対のフランジ、軸受等を別途に必要
とするため、部品点数が増し、構造が複雑化してコスト
高につくのみならず、感光体の疲労、損傷等によってシ
リンダを交換する必要を生じた場合に、その脱着に煩雑
な手順を必要として多くの手間がかかる欠点を有してい
た。Furthermore, in addition to the cylinder, conventional photosensitive drums require a pair of flanges, bearings, etc. to support the drum, which increases the number of parts, complicates the structure, and increases costs. Moreover, when it becomes necessary to replace the cylinder due to fatigue or damage to the photoreceptor, it requires a complicated procedure for attaching and detaching the cylinder, which requires a lot of time and effort.
更には、感光ドラムの回転支承においても、シリンダを
これとは別体であるフランジ部、軸受を介してドラム軸
に軸支するものであるため、各部材相互間での誤差の累
積によってシリンダの中心がドラム軸の中心に全長にわ
たって厳密に合致しないことが起こり、複写機能上に種
々の悪影響を及ぼすことがあった。Furthermore, in the rotational support of the photosensitive drum, since the cylinder is supported on the drum shaft via a separate flange and bearing, the cylinder may deteriorate due to the accumulation of errors between each member. Sometimes the center does not exactly match the center of the drum shaft over the entire length, which can have various negative effects on the copying function.
（発明の目的）
この発明は、上記のような諸問題の解決をはかることを
目的とする。即ち、第１には感光ドラムの放熱性を顕著
に増大せしめ、例えば加熱定着ロールを周面の一部に接
触せしめたような場合にも、回転によって静電潜像を形
成せしめる帯電部に至るまでの過程で表面得度を充分に
下降せしめうるようなものとなすこと、また、第２には
、製作を可及的簡易に行いうるちのとなすこと、更に第
３には、ドラム軸への支承構造を簡素化し、その脱着操
作を容易に行いうるちのとすると共に、ドラムの中心を
ドラム軸の中心に正確に合致せしめることができ、回転
中心に狂い、誤差を生じるおそれのないようなものとす
ること等を目的とする。(Purpose of the invention) The purpose of the invention is to solve the problems mentioned above. That is, firstly, the heat dissipation of the photosensitive drum is significantly increased, and even when a heating fixing roll is brought into contact with a part of the circumferential surface, the rotation leads to a charging section that forms an electrostatic latent image. Second, the manufacturing process must be as simple as possible, and the third objective is to reduce the surface roughness of the drum shaft. A structure that simplifies the support structure and makes it easy to attach and detach, and also allows the center of the drum to align accurately with the center of the drum shaft, without the risk of misalignment with the center of rotation and causing errors. The purpose is to
（問題点を解決するための手段）
上記の目的を達成するために、この発明は、感光層の支
持体としてのドラム胴ないしはシリンダとなる外筒の内
部に、軸受となる管状の内筒を、複数個の放射状連結リ
ムを介して一体成形したものとすることにより、前記内
筒にドラム軸を挿通して簡単かつ正確にドラムの回転支
承を可能なものとし、かつドラムの脱着も容易に行いう
るちのとすると共に、更に上記内外両筒間に軸線方向に
沿って放熱フィンを挿入設置することにより、好ましく
はドラムの一端側からファンによって強制空冷を促す手
段との併用によって、充分な放熱促進効果が得られるよ
うにし、更には上記放熱フィンに特に断面Ｖ字形フィン
を用いることによって、その挿入設置作業をきわめて容
易に行いうるちのとして、生産性の向上をはかりうるよ
うにしたものである。(Means for Solving the Problems) In order to achieve the above object, the present invention includes a tubular inner cylinder serving as a bearing inside an outer cylinder serving as a drum body or cylinder as a support for a photosensitive layer. By integrally molding a plurality of radial connecting rims, the drum shaft can be inserted into the inner cylinder to easily and accurately support the rotation of the drum, and the drum can be easily attached and detached. In addition to this, sufficient heat radiation can be achieved by inserting and installing heat radiation fins along the axial direction between the above-mentioned inner and outer cylinders, preferably in combination with means for promoting forced air cooling using a fan from one end of the drum. In addition, by using V-shaped cross-section fins as the heat dissipation fins, the insertion and installation work can be performed extremely easily, thereby improving productivity. .
即ち、この発明は、軸受用内筒と、ドラム胴を形成する
外筒とが複数個の放射状連結リムを介して同心に一体成
形されるとともに、上記内外両筒間に、隣接する各放射
状連結リム間の位置において、横断面Ｖ字状の放熱フィ
ンが、折返し側縁を前記内筒の外周面に当接させ両翼板
部の外方側縁を前記外筒の内面に当接せしめた状態にし
て軸線方向に挿入され、かつ上記当接部を一体的に接合
固定されてなることを特徴とする電子複写機用感光ドラ
ムを要旨とする。That is, in this invention, the inner cylinder for a bearing and the outer cylinder forming the drum body are integrally molded concentrically via a plurality of radial connection rims, and each adjacent radial connection rim is formed between the inner and outer cylinders. At a position between the rims, a radiation fin having a V-shaped cross section has its folded side edge in contact with the outer circumferential surface of the inner cylinder and the outer side edges of both wing plate parts in contact with the inner surface of the outer cylinder. The object of the present invention is to provide a photosensitive drum for an electronic copying machine, characterized in that the drum is inserted in the axial direction and the abutting portion is integrally joined and fixed.
（実施例）
以下、この発明の実施例を図面に基づいて詳しく説明す
る。(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図および第２図において、（１）は表面に感光層が
形成されるドラム胴としての外筒であり、（２）はこれ
の内部に同心に設けられた軸受用の内筒である。これら
両筒（１）（２）は複数本の放射状連結リム（３）によ
って相互に一体的に連結されている。このような内外二
重筒からなる成形体は、例えばアルミニウム合金の押出
し成形によ゛す、容易に製作することができるものであ
る。なお、特に外筒（１）は、強度、重量、放熱性等の
関係で、肉厚を２〜４馴程度に形成するのが有利である
。また、図示実施例において、放射状連結リム〈３）は
、等間隔に４個設けたものを示したが、２個以上であれ
ば何個設けても良く、一般的には８個程度までの範囲で
任意に設定される。In Figures 1 and 2, (1) is an outer cylinder as a drum cylinder on which a photosensitive layer is formed, and (2) is an inner cylinder for a bearing provided concentrically inside this. . These two cylinders (1) and (2) are integrally connected to each other by a plurality of radial connecting rims (3). Such a molded body consisting of an inner and outer double cylinder can be easily manufactured, for example, by extrusion molding of an aluminum alloy. In particular, it is advantageous for the outer cylinder (1) to have a wall thickness of about 2 to 4 mm in terms of strength, weight, heat dissipation, etc. In addition, in the illustrated embodiment, four radial connecting rims <3) are provided at equal intervals, but any number of radial connecting rims <3> may be provided as long as they are two or more, and generally up to about eight. Set arbitrarily within the range.
上記内外両筒（２）（１）間には、隣接する放射状連結
゛リム（３）（３）間の位置において、それぞれ複数個
の放熱フィン（４）が軸線方向に一端から挿入されかつ
接合固定されている。Between the inner and outer cylinders (2) and (1), a plurality of heat dissipation fins (4) are inserted from one end in the axial direction at positions between the adjacent radial connecting rims (3) and (3), and are joined together. Fixed.
該放熱フィン（４）は、内外両筒（２＞（１）間の距離
、即ち連結リム（３）の高さに対応する幅をもって横断
面Ｖ字状に形成されたものであり、従って上記の挿入設
置状態において折返し側縁（４ａ）が内筒（２）の外面
に当接せられ、両翼板部（４ｂ） （４ｂ）の外方側
縁が外筒（１）の内面に当接せらている。かつ、この放
熱フィン（４）の挿入操作を容易化し、その位置決めを
正しく行うために、内外両筒（２）（１）には対向状に
それぞれ多数状の細溝（５）’（’６’）が設けられて
おり、これらに放熱フィン〈４）の上記両側縁部がはめ
込まれたものとなされている。また、放熱フィン（４）
の上記接合固定は、放熱フィン（４）にアルミニウムブ
レージングシートを用いることにより、その皮材（ろう
材）を溶融せしめて両側縁部を外筒（１）及び内筒（２
）にろう付け接合することにより行うのが最も簡易であ
り一般的である。実施例もこのような手法で放熱フィン
の接合固定が行われているものである。The heat dissipation fins (4) are formed in a V-shaped cross section with a width corresponding to the distance between the inner and outer cylinders (2>(1), that is, the height of the connecting rim (3)). In the inserted and installed state, the folded side edge (4a) is in contact with the outer surface of the inner cylinder (2), and the outer side edge of both wing plates (4b) (4b) is in contact with the inner surface of the outer cylinder (1). In addition, in order to facilitate the insertion operation of the radiation fins (4) and to correctly position them, the inner and outer cylinders (2) and (1) are provided with a number of thin grooves (5) facing each other. '('6') are provided, and the above-mentioned both side edge parts of the radiation fin <4) are fitted into these. Also, heat dissipation fins (4)
The above-mentioned bonding and fixing is achieved by using an aluminum brazing sheet for the heat dissipation fins (4), and by melting the skin material (brazing material), the outer cylinder (1) and the inner cylinder (2) are attached to both side edges.
) is the simplest and most common method. In this embodiment, the heat dissipation fins are also bonded and fixed using this method.
また上記放熱フィン（４）は、感光ドラムに要求される
放熱性能との関係でそのフィンピッチが決められるもの
である。而して、図示実施例では、隣接する連結リム（
３）（３）間に各４個づつの放熱フィン（４）が設置さ
れ、そこに６枚づつの放熱用の翼板部（４ｂ）を略放則
状に配置せしめたものとなされているが、これの増減は
任意である。Further, the fin pitch of the heat dissipation fins (4) is determined in relation to the heat dissipation performance required of the photosensitive drum. Thus, in the illustrated embodiment, adjacent connecting rims (
3) Four heat dissipation fins (4) are installed between each of (3), and six heat dissipation vanes (4b) are arranged therein in a substantially radial manner. However, this can be increased or decreased arbitrarily.
なお、図示実施例の放熱フィン（４）は、その響板部（
４ｂ）がいずれも平板状であるものとして示したが、放
熱効率を更に向上させる目的で、翼板部（４ｂ）に更に
横断面方向あるいは長さ方向に波付けを施したものとか
、あるいはルーバー状に多数の切起し部を形成したもの
等を用いることも推奨される。Note that the heat dissipation fin (4) in the illustrated embodiment has a soundboard portion (
4b) are all shown as flat plates, but for the purpose of further improving heat dissipation efficiency, the blade part (4b) may be further corrugated in the cross-sectional direction or length direction, or may be made with louvers. It is also recommended to use a material with many cut and raised portions formed in the shape of a shape.
（発明の効果）
この発明に係る感光ドラムは、前述のような構成を有す
るものであるから、実施例の参酌によっても明らかなで
あるように、内筒（２）にドラム軸（図示略）を挿通す
ることによってこれを複写機内に容易に軸支しうる。従
って、従来品のように別途フランジ体や軸受等の付属部
品を要することなく回転支承せしめることが可能で、構
造の大幅な簡略化をはかりうる。かつ内外筒が一体成形
物であることによって、内筒（２）に通したドラム軸に
対して外筒（１）の中心が自動的に正確に一致されるた
め、この感光ドラムの周りに近接配置されるコロナ放電
器群、現像器、あるいは転写紙ガイド等に接触して、こ
れら若しくはドラム表面の感光層を傷付ける等の問題を
防ぐことができる。(Effects of the Invention) Since the photosensitive drum according to the present invention has the above-described configuration, as is clear from consideration of the examples, the inner cylinder (2) is provided with a drum shaft (not shown). This can be easily pivoted into a copying machine by inserting it. Therefore, unlike conventional products, it is possible to provide rotational support without requiring additional accessories such as a flange body or bearing, and the structure can be significantly simplified. In addition, since the inner and outer cylinders are integrally molded, the center of the outer cylinder (1) is automatically and accurately aligned with the drum shaft that passes through the inner cylinder (2), so that the outer cylinder (1) can be placed close to the photosensitive drum. It is possible to prevent problems such as damage to the photosensitive layer on the surface of the drum due to contact with the corona discharger group, developing device, transfer paper guide, etc. arranged therein.
また、外筒（１）の内側にはこれに接触してＶ字形放熱
フィン（４）の薄い翼板部〈４ｂ）が存在するのに加え
て、内筒〈２）と連結する放射状連結リム（３）も放熱
作用を実現するため、放熱性に優れており、コロナ放電
器による放電、更にはランプからの光の照射を受けて外
筒が熱せられても、速やかに放熱して過熱現象を生じる
ことがなく、ドラムの回転スピードを上げて高速化をは
かることができる。殊に、第１図に示すように、ドラム
の一端からファン（７）で風を送って強制空冷を行うこ
とにより、放熱作用を愈々促進でき、従ってこのような
場合には、感光ドラムの周面で加熱定着ローラにより転
写紙上の転写画像の定着を行わしめるような場合におい
てさえ、これににつて加熱されたドラムの外周面部が帯
電部に至るまでに、該外面部分の温度を充分に所要の低
い温度にまで下げることが可能となり、ひいては複写機
の一層の小型化をはかるうえで非常に有効なものとなる
。In addition, on the inside of the outer cylinder (1) there is a thin vane part (4b) of the V-shaped radiation fin (4) in contact with it, and in addition, a radial connecting rim that connects with the inner cylinder (2) (3) also has excellent heat dissipation properties, and even if the outer cylinder is heated due to discharge from a corona discharger or even irradiation with light from a lamp, heat is quickly dissipated and overheating occurs. It is possible to increase the rotation speed of the drum without causing any problems. In particular, as shown in FIG. 1, by blowing air from one end of the drum with a fan (7) to perform forced air cooling, heat dissipation can be easily promoted. Even in the case where the transferred image is fixed on the transfer paper by a heating fixing roller on the surface, the temperature of the heated outer peripheral surface of the drum must be sufficiently high before the heated outer peripheral surface of the drum reaches the charging section. This makes it possible to lower the temperature to a low temperature, which is extremely effective in further downsizing copying machines.
更に、上記放熱フィンとして特に断面Ｖ字状のフィンが
用いられているので、内外両筒（２）（１）間へのフィ
ンの挿入設置作業を容易に行い得て製造上有利である。Furthermore, since fins having a V-shaped cross section are used as the radiation fins, it is easy to insert and install the fins between the inner and outer cylinders (2) and (1), which is advantageous in manufacturing.
この発明は上述の次第で、極めて簡単な構成にして、感
光ドラムの正確な回転中心の設定配置を可能とし、偏心
回転等によるトラブルの発生の問題を回避、しうるのは
もとより、感光ドラムの脱着操作も簡易に行いうるちの
となしうる。As described above, the present invention has an extremely simple structure, enables accurate setting and arrangement of the rotation center of the photosensitive drum, and not only avoids problems caused by eccentric rotation, but also enables the rotation of the photosensitive drum. It can be easily attached and detached as well.
また、外筒に一体成形する場合には側底不可能であるよ
うな多数個の放熱フィンの設置が可能であり、放熱性能
に極めて優れたものとなしうろことによって、長時間の
連続使用によっても過熱ににるトラブルを発生するおそ
れがなく、良好な機能を保持すると共に、感光ドラム自
体の小型化に加えて、該ドラムの周りで転写紙上のトナ
ーの加熱定着を行わしめることにより定着機構の簡素化
をはかることを可能とすることも相俟って、複写機の小
型化に大きく貢献を果しうる顕著な効果を秦する。In addition, when integrally molded into the outer cylinder, it is possible to install a large number of heat dissipation fins, which is not possible on the side bottom, resulting in extremely excellent heat dissipation performance. There is no risk of problems caused by overheating, and it maintains good functionality.In addition to downsizing the photosensitive drum itself, the fixing mechanism heats and fixes the toner on the transfer paper around the drum. Together with the fact that it is possible to simplify the process, this has a remarkable effect that can greatly contribute to the miniaturization of copying machines.
図面はこの発明の実施例を示す一部切欠き斜視図、第２
図は第１図■−■線の断面図、第３図は放熱フィンの
′ ゛
一一一
芋キ一部斜視図である。
（１）・・・外筒、（２）・・・内筒、（３）・・・連
結リム、（４）・・・放熱フィン、（４ａ）・・・折返
し側縁、（４ｂ）・・・翼板部。
以 上
特許出願人 昭和アルミニウム株式会社代 理
人 弁理士 清 水 久 義手続補正書
（麗） ８
昭和６０年９月２日
昭和５９年 特許願第６４６５５号
２、発明の名称
電子複写機用感光ドラム
３、補正をする者
事件との関係 特許出願人
住所 堺市海山町６丁２２４番地
名称 昭和アルミニウム株式会社代表者 石
井 親
４、代理人
住所 大阪市南区綬谷中之町７２−４心斎４を岩崎
ヒル
氏名 （７１１６）弁理士清水久義、、装置 （０
６）２４５−２７１８ ”５、補正命令の日付 昭和
６０年８月２７日、補正の内容
明細書第１２頁笥１７行の「図面はＪを「第１図は」と
訂正する。
以上The drawings are partially cutaway perspective views showing embodiments of the present invention;
The figure is a cross-sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view of the radiation fin.
' ゛It is a partial perspective view of one potato. (1)...Outer cylinder, (2)...Inner cylinder, (3)...Connection rim, (4)...Radiation fin, (4a)...Folded side edge, (4b)... ... Wing plate part. Patent applicant: Showa Aluminum Co., Ltd.
Person Patent Attorney Hisashi Shimizu Procedural Amendment (Rei) 8 September 2, 1985, 1988 Patent Application No. 64655 2, Name of invention Photosensitive drum for electronic copying machine 3, Relationship with the case of the person making the amendment Patent applicant address: 6-224 Kaiyama-cho, Sakai City Name: Showa Aluminum Co., Ltd. Representative: Ishi
Chika I 4, agent address Shinsai 4, 72-4 Nakano-cho, Yasatsuya, Minami-ku, Osaka City, Iwasaki Hill name (7116) Patent attorney Hisayoshi Shimizu, equipment (0
6) 245-2718 5. Date of amendment order: August 27, 1985. On page 12, line 17 of the statement of contents of the amendment, ``Drawings J'' is corrected to ``Figure 1''. that's all
Claims (3)
個の放射状連結リムを介して同心に一体成形されるとと
もに、上記内外両筒間に、隣接する各放射状連結リム間
の位置において、横断面Ｖ字状の放熱フィンが、折返し
側縁を前記内筒の外周面に当接させ両翼板部の外方側縁
を前記外筒の内面に当接せしめた状態にして軸線方向に
挿入され、かつ上記当接部を一体的に接合固定されてな
ることを特徴とする電子複写機用感光ドラム。(1) The inner cylinder for the bearing and the outer cylinder forming the drum body are integrally molded concentrically via a plurality of radial connecting rims, and between the above-mentioned inner and outer cylinders, and between the adjacent radial connecting rims. At this position, the heat dissipating fins having a V-shaped cross section are placed in a state in which the folded side edges are in contact with the outer peripheral surface of the inner cylinder and the outer side edges of both wing plate parts are in contact with the inner surface of the outer cylinder. 1. A photosensitive drum for an electronic copying machine, characterized in that the photosensitive drum is inserted in the same direction and the abutting portion is integrally joined and fixed.
側縁をはめ込まれ、かつろう付けにより該内外両筒に接
合されてなる特許請求の範囲第１項記載の電子複写機用
感光ドラム。(2) An electronic copying machine according to claim 1, wherein the fins have both side edges fitted into thin grooves formed oppositely in both the inner and outer cylinders, and are joined to the inner and outer cylinders by brazing. photosensitive drum.
用いられ、その皮材によって該フィンが前記内外両筒に
ろう付け接合されてなる特許請求の範囲第１項または第
２項記載の電子複写機用感光ドラム。(3) A photosensitive drum for an electronic copying machine according to claim 1 or 2, wherein an aluminum brazing sheet is used for the radiation fins, and the fins are brazed to both the inner and outer cylinders by means of the skin material. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6465584A JPS6138964A (en) | 1984-03-30 | 1984-03-30 | Photosensitive drum for electronic copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6465584A JPS6138964A (en) | 1984-03-30 | 1984-03-30 | Photosensitive drum for electronic copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6138964A true JPS6138964A (en) | 1986-02-25 |
Family
ID=13264457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6465584A Pending JPS6138964A (en) | 1984-03-30 | 1984-03-30 | Photosensitive drum for electronic copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6138964A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149074A (en) * | 1980-04-21 | 1981-11-18 | Konishiroku Photo Ind Co Ltd | Copying apparatus |
| JPS5720775A (en) * | 1980-07-15 | 1982-02-03 | Ricoh Co Ltd | Electronic copying machine |
-
1984
- 1984-03-30 JP JP6465584A patent/JPS6138964A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149074A (en) * | 1980-04-21 | 1981-11-18 | Konishiroku Photo Ind Co Ltd | Copying apparatus |
| JPS5720775A (en) * | 1980-07-15 | 1982-02-03 | Ricoh Co Ltd | Electronic copying machine |
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