JPH09281766A - Electrophotographic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and easily attach and detach a photoreceptor in an electrophotographic device to/from which the photoreceptor is attached/detached by using a screw member. SOLUTION: An engaging member 47 is provided rotatably at the controlling position where an engaging projection part 47d is engaged with the photoreceptor 20 to control the rotation thereof and at the retracting position where the control is released on a supporting plate 40 of the photoreceptor 20. Then, at the time of attaching the supporting plate 40 by interposing a compression coil spring 44 between the plate 40 and the photoreceptor 20, the engaging member 47 is positioned at the controlling position, the engaging projection part 47d is engaged with the photoreceptor 20, and the rotation thereof is controlled. Therefore, in this rotation controlling state, the rotation of the photoreceptor 20 is stopped by abutting it on the engaging projection part 47d at the time of attaching and detaching the screw to/from one end of the photoreceptor shaft 35 by rotating a screw knob (screw member 45).

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】この発明は、たとえばレーザ
を用いてドラム状の感光体上に画像を形成し、その画像
を用紙に転写して記録を行う、プリンタ・複写機・ファ
クシミリやそれらの複合機などの電子写真装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer, a copying machine, a facsimile machine or a combination thereof for forming an image on a drum-shaped photosensitive member using a laser and transferring the image onto a sheet for recording. The present invention relates to an electrophotographic device such as a machine.

【０００２】[0002]

【従来の技術】従来、この種の電子写真装置、たとえば
レーザプリンタの中には、プリンタ本体の前側（正面
側）から感光体を入れて感光体軸をそれに回転を伝える
プリンタ本体内の駆動軸と一直線上に配置し、後側（奥
側）でそれら二軸を連結してモータの回転を感光体に伝
達するようにしたものがある。2. Description of the Related Art Conventionally, in an electrophotographic apparatus of this type, for example, a laser printer, a drive shaft in the printer body is inserted from the front side (front side) of the printer body and the rotation of the shaft is transmitted to the photoreceptor shaft. And the two shafts are connected on the rear side (back side) to transmit the rotation of the motor to the photoconductor.

【０００３】そのように前側から感光体を挿入してセッ
トするタイプのものでは、プリンタ本体内の後側で、た
とえば図１４に示すように、感光体１の感光体軸２の一
端とモータ３の駆動軸４とを、軸方向の凹凸で噛み合う
カップリング９を介して連結して支持板（図示省略）で
感光体軸２の一端を回転自在に支持する。In such a type in which the photoconductor is inserted from the front side and set, as shown in FIG. 14, for example, one end of the photoconductor shaft 2 of the photoconductor 1 and the motor 3 are provided in the rear side of the printer body. The drive shaft 4 is connected to the drive shaft 4 via a coupling 9 that meshes with the projections and depressions in the axial direction, and one end of the photoconductor shaft 2 is rotatably supported by a support plate (not shown).

【０００４】一方、プリンタ本体内の前側では、図１５
に示すように、感光体軸２の他端を圧縮コイルばね５に
入れてそれを感光体軸２に取り付け、その感光体軸２の
他端を支持板６の軸受６ａに通してから、その他端外周
のねじ部２ａにねじノブ７をねじ付け、そのねじノブ７
で圧縮コイルばね５を圧縮し、その圧縮コイルばね５で
感光体１を後側（図中右側）に付勢してカップリング９
を噛み合わせる。そして、支持板６で感光体軸２の上下
方向位置を規制してその他端を回転自在に支持し、支持
板６の外側でさらに感光体軸２の他端を規制板８の軸受
８ａに通してその他端を規制板８で保持し、その規制板
８で感光体軸２の左右方向位置を規制していた。On the other hand, on the front side in the printer body, as shown in FIG.
As shown in, the other end of the photoconductor shaft 2 is put in the compression coil spring 5 and attached to the photoconductor shaft 2, and the other end of the photoconductor shaft 2 is passed through the bearing 6a of the support plate 6 and then the other. Screw the screw knob 7 to the screw portion 2a on the outer circumference of the end,
The compression coil spring 5 is compressed by, and the compression coil spring 5 urges the photoconductor 1 to the rear side (the right side in the drawing) to generate the coupling 9
Bite. Then, the support plate 6 regulates the vertical position of the photoconductor shaft 2 to rotatably support the other end, and the other end of the photoconductor shaft 2 is passed through the bearing 8a of the regulation plate 8 outside the support plate 6. The other end is held by the regulating plate 8, and the regulating plate 8 regulates the lateral position of the photoconductor shaft 2.

【０００５】[0005]

【発明が解決しようとする課題】ところが、そのような
従来のものでは、感光体１の着脱時、ねじノブ７を回動
して感光体軸２にねじ付けたり感光体軸２から外したり
するとき、感光体１を手で押えていないと、ねじノブ７
とともに感光体軸２も回転してねじノブ７を感光体軸２
に十分にねじ付けたり感光体軸２から外したりすること
ができない。そのため、ねじノブ７を回動するときは、
その都度、感光体１を手で押えてその回転を止める必要
があり、その結果、感光体１の着脱作業が面倒であっ
た。However, in such a conventional one, when the photoconductor 1 is attached or detached, the screw knob 7 is rotated to screw it to the photoconductor shaft 2 or remove it from the photoconductor shaft 2. When the photoconductor 1 is not pressed by hand, the screw knob 7
At the same time, the photoconductor shaft 2 also rotates and the screw knob 7 is moved to the photoconductor shaft 2
Cannot be sufficiently screwed on or removed from the photoconductor shaft 2. Therefore, when turning the screw knob 7,
Each time, it was necessary to manually press the photoconductor 1 to stop its rotation, and as a result, the work of attaching and detaching the photoconductor 1 was troublesome.

【０００６】そこで、この発明の目的は、上述のような
電子写真装置において、感光体の着脱作業を面倒なく簡
単にすることにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to simplify the attachment / detachment work of the photoconductor in the electrophotographic apparatus as described above without trouble.

【０００７】[0007]

【課題を解決するための手段】そのため、請求項１に記
載の発明は、たとえば以下の図１〜図９に示す実施の形
態のように、ドラム状の感光体２０〜２３の感光体軸３
５をそれに回転を伝える駆動軸３７と一直線上に配し、
それら感光体軸３５と駆動軸３７とを、軸方向の凹凸で
噛み合うカップリング３６を介して連結する一方、前記
感光体軸３５の他端側を支持板４０で回転自在に支持
し、その支持板４０と前記感光体２０〜２３との間に圧
縮コイルばね４４のような付勢部材を設け、前記感光体
軸３５にねじノブ４５のようなねじ部材をねじ付けるこ
とにより前記付勢部材を圧縮し、その付勢部材で前記感
光体２０〜２３を軸方向に付勢する電子写真装置におい
て、前記支持板４０に係合部材４７を、前記感光体２０
〜２３と係合してその回転を規制する規制位置と、その
規制を解除する退避位置とに移動自在に設けてなる、こ
とを特徴とする。Therefore, according to the invention described in claim 1, for example, as in the following embodiment shown in FIGS. 1 to 9, the photosensitive member shaft 3 of the drum-shaped photosensitive members 20 to 23 is used.
5 is aligned with the drive shaft 37 that transmits rotation to it,
The photoconductor shaft 35 and the drive shaft 37 are connected via a coupling 36 that meshes with the projections and depressions in the axial direction, while the other end of the photoconductor shaft 35 is rotatably supported by a support plate 40, and the support thereof is provided. An urging member such as a compression coil spring 44 is provided between the plate 40 and the photoconductors 20 to 23, and a screw member such as a screw knob 45 is screwed onto the photoconductor shaft 35 so that the urging member is moved. In the electrophotographic apparatus in which the photoconductors 20 to 23 are compressed and axially biased by the biasing members, the support plate 40 is provided with the engaging member 47 and the photoconductor 20.
It is characterized in that it is provided movably between a regulation position that engages with .about.23 to regulate its rotation and a retracted position that releases the regulation.

【０００８】そして、ねじノブ４５を回して感光体２０
〜２３を取り付けるとき、規制位置にある係合部材４７
を感光体２０〜２３に係合してその回転を規制する。取
付後、係合部材４７を退避位置に移動して感光体２０〜
２３との係合を外し、その回転規制を解除する。また、
ねじノブ４５を回して感光体２０〜２３を取り外すと
き、係合部材４７を規制位置に移動して感光体２０〜２
３に係合し、その回転を規制する。Then, the screw knob 45 is turned to rotate the photosensitive member 20.
When attaching ~ 23, the engaging member 47 in the regulated position
Is engaged with the photoconductors 20 to 23 to regulate its rotation. After the mounting, the engaging member 47 is moved to the retracted position to move the photosensitive member 20 to
23 is disengaged and the rotation restriction is released. Also,
When the screw knob 45 is turned to remove the photoconductors 20 to 23, the engagement member 47 is moved to the regulation position to move the photoconductors 20 to 2 to each other.
3 is engaged, and its rotation is restricted.

【０００９】請求項２に記載の発明は、たとえば以下の
図１〜図９に示す実施の形態のように、請求項１に記載
の電子写真装置において、前記支持板４０で前記感光体
軸３５の上下方向位置を規制し、前記支持板４０とは別
個に規制板４１を設けてその規制板４１で前記感光体軸
３５の左右方向位置を規制し、該規制板４１を取り付け
たとき前記係合部材４７を押して前記規制位置から前記
退避位置へと移動してなる、ことを特徴とする。According to a second aspect of the present invention, in the electrophotographic apparatus according to the first aspect, for example, as in the following embodiment shown in FIGS. 1 to 9, the photosensitive member shaft 35 is supported by the support plate 40. The vertical position of the photoconductor shaft 35 is regulated by a regulation plate 41 provided separately from the support plate 40, and the regulation plate 41 regulates the lateral position of the photoconductor shaft 35. The combination member 47 is pushed to move from the restricted position to the retracted position.

【００１０】そして、支持板４０を取り付けてから規制
板４１を取り付けると、その規制板４１で係合部材４７
を押して退避位置へと移動し、感光体２０〜２３の回転
規制を解除する。一方、規制板４１を取り外すと、係合
部材４７を感光体２０〜２３に係合してその回転を規制
する。When the support plate 40 is attached and then the regulating plate 41 is attached, the engaging member 47 is attached by the regulating plate 41.
Press to move to the retracted position and release the rotation restriction of the photoconductors 20-23. On the other hand, when the regulation plate 41 is removed, the engagement member 47 is engaged with the photoconductors 20 to 23 to regulate the rotation thereof.

【００１１】請求項３に記載の発明は、たとえば以下の
図１０に示す実施の形態のように、請求項１または２に
記載の電子写真装置において、前記係合部材４７を移動
するとき互いに接触するその係合部材４７と前記感光体
２０〜２３の双方またはそのいずれか一方の接触部分
に、低摩擦部材５５を付着してなることを特徴とする。According to a third aspect of the invention, the electrophotographic apparatus according to the first or second aspect, for example, as in the embodiment shown in FIG. 10 below, makes contact with each other when the engaging member 47 is moved. The low friction member 55 is adhered to the contact portion of both the engaging member 47 and the photoconductors 20 to 23 or any one of them.

【００１２】そして、係合部材４７を感光体２０〜２３
に係合したりその係合を解除したりするとき、係合部材
４７が、低摩擦部材５５により感光体２０〜２３に引っ
掛からないようにする。The engaging member 47 is attached to the photoconductors 20-23.
The low friction member 55 prevents the engagement member 47 from being caught by the photoconductors 20 to 23 when engaging with or releasing the engagement with.

【００１３】請求項４に記載の発明は、たとえば以下の
図１１および図１２に示す実施の形態のように、ドラム
状の感光体２０〜２３の感光体軸３５をそれに回転を伝
える駆動軸３７と一直線上に配し、それら感光体軸３５
と駆動軸３７とを、軸方向の凹凸で噛み合うカップリン
グ３６を介して連結する一方、前記感光体軸３７の他端
側を支持板４０で回転自在に支持し、その支持板４０と
前記感光体２０〜２３との間に圧縮コイルばね４４のよ
うな付勢部材を設け、前記感光体軸３５にねじノブ４５
のようなねじ部材をねじ付けることにより前記付勢部材
を圧縮し、その付勢部材で前記感光体２０〜２３を軸方
向に付勢する電子写真装置において、非動作時、前記感
光体２０〜２３の回転をロックするロック機構Ｂを備え
てなる、ことを特徴とする。According to a fourth aspect of the present invention, for example, as in the embodiment shown in FIGS. 11 and 12 below, a drive shaft 37 for transmitting the rotation of the photoconductor shaft 35 of the drum-shaped photoconductors 20-23. And the photoconductor shaft 35.
The drive shaft 37 and the drive shaft 37 are connected via a coupling 36 that meshes with the projections and depressions in the axial direction, while the other end side of the photoconductor shaft 37 is rotatably supported by a support plate 40, and the support plate 40 and the photoconductor An urging member such as a compression coil spring 44 is provided between the body 20 and the body 20, and the photosensitive member shaft 35 is provided with a screw knob 45.
In the electrophotographic apparatus in which the biasing member is compressed by screwing such a screw member and the biasing member biases the photoconductors 20 to 23 in the axial direction, the photoconductor 20 to It is characterized by comprising a lock mechanism B for locking the rotation of 23.

【００１４】そして、非動作時、つまり記録を行わない
とき、ロック機構Ｂを作動して感光体２０〜２３の回転
をロックする。When not operating, that is, when recording is not performed, the lock mechanism B is operated to lock the rotation of the photoconductors 20-23.

【００１５】請求項５に記載の発明は、たとえば以下の
図１１および図１２に示す実施の形態のように、請求項
４に記載の電子写真装置において、前記ロック機構Ｂ
を、前記感光体２０〜２３と同軸に設ける被係合部材６
０と、それに係合して前記感光体２０〜２３の回転を止
める係合部材６１とで構成してなることを特徴とする。According to a fifth aspect of the present invention, in the electrophotographic apparatus according to the fourth aspect, for example, as in the following embodiment shown in FIGS. 11 and 12, the lock mechanism B is used.
To be engaged with the photoconductors 20 to 23.
0, and an engaging member 61 that engages with it to stop the rotation of the photoconductors 20 to 23.

【００１６】そして、非動作時は、係合部材６１を被係
合部材６０に係合して感光体２０の回転を止める。When not operating, the engaging member 61 is engaged with the engaged member 60 to stop the rotation of the photoconductor 20.

【００１７】請求項６に記載の発明は、たとえば以下の
図１３に示す実施の形態のように、請求項４または５に
記載の電子写真装置において、トラブル発生時、前記ロ
ック機構Ｂを作動してなる、ことを特徴とする。According to a sixth aspect of the invention, in the electrophotographic apparatus according to the fourth or fifth aspect, for example, as in the following embodiment shown in FIG. 13, the lock mechanism B is operated when trouble occurs. It is characterized by that.

【００１８】そして、トラブル発生時は、非動作時か否
かに関係なく、ロック機構Ｂを作動して感光体２０〜２
３の回転をロックする。When a trouble occurs, the lock mechanism B is actuated to actuate the photoconductors 20 to 2 regardless of whether or not it is not operating.
Lock the rotation of 3.

【００１９】[0019]

【発明の実施の形態】以下、図面を参照しつつ、この発
明の実施の形態について説明する。図９は、請求項１に
記載の発明によるカラーレーザ複写機の内部機構の概略
構成図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 9 is a schematic configuration diagram of the internal mechanism of the color laser copying machine according to the first aspect of the invention.

【００２０】このカラーレーザ複写機には、複写機本体
の図９中上部に、原稿をセットする原稿載置ガラス１０
を設ける。そして、原稿載置ガラス１０の下側に画像読
取部１１を設け、さらに画像読取部１１の下側に画像記
録部１２を設け、画像記録部１２の図中右側に給紙部１
３を設けてなる。In this color laser copying machine, an original placing glass 10 on which an original is set is placed on the upper portion of the copying machine main body in FIG.
Is provided. An image reading unit 11 is provided below the document placing glass 10, an image recording unit 12 is provided below the image reading unit 11, and the sheet feeding unit 1 is provided on the right side of the image recording unit 12 in the figure.
3 is provided.

【００２１】画像読取部１１には、光源１４・結像レン
ズ１５・カラー等倍ＣＣＤ１６・画像処理部１７を備え
る。The image reading unit 11 includes a light source 14, an image forming lens 15, a color equal-magnification CCD 16, and an image processing unit 17.

【００２２】画像記録部１２には、画像読取部１１の下
側に、図９中左右に長い光書込み装置１８と搬送ベルト
装置１９を備え、それら搬送ベルト装置１９と光書込み
装置１８との間に、４本のドラム状感光体２０〜２３を
備える。そして、感光体２０〜２３の周りに、それぞれ
矢印で示す回転方向に順に、帯電装置２４、現像装置２
５、転写装置２６、クリーニング装置２７を備える。ま
た、搬送ベルト装置１９の図中左側に定着装置２８を備
える。The image recording unit 12 is provided below the image reading unit 11 with an optical writing device 18 and a conveying belt device 19 which are long in the left and right in FIG. 9, and between the conveying belt device 19 and the optical writing device 18. In addition, four drum-shaped photoconductors 20 to 23 are provided. Then, around the photoconductors 20 to 23, the charging device 24 and the developing device 2 are sequentially arranged in the rotation directions indicated by the arrows.
5, a transfer device 26, and a cleaning device 27. Further, a fixing device 28 is provided on the left side of the conveyor belt device 19 in the figure.

【００２３】給紙部１３には、サイズの異なる用紙Ｐを
収納した２つの給紙カセット２９を上下に配置し、それ
ぞれを着脱自在に備え、それら給紙カセット２９の図９
中左上側に、それぞれ給紙ローラ３０を設ける。In the paper feeding section 13, two paper feeding cassettes 29 accommodating papers P of different sizes are vertically arranged, and each of them is detachably provided.
A paper feed roller 30 is provided at the upper left of the center.

【００２４】そして、原稿のカラーコピーを取るとき
は、原稿載置ガラス１０上に原稿をセットし、コピース
イッチを押す。しかして、光源１４から光を原稿面に照
射し、その反射光を結像レンズ１５を通してカラー等倍
ＣＣＤ１６に入れ、そのＣＣＤ１６で光の３原色（ＲＧ
Ｂ）に分解し、さらに画像処理部１７で黒色（black）
・赤色（magenta）・黄色（yellow）・青色（cyan）の
画像信号に色変換処理を行ってそれら画像信号を光書込
み装置１８へ送る。When making a color copy of an original, the original is set on the original placing glass 10 and the copy switch is pressed. Then, the light source 14 irradiates the original surface with light, and the reflected light is passed through the imaging lens 15 into the color equal-magnification CCD 16, and the CCD 16 uses the three primary colors (RG) of light.
B) and then black in the image processing unit 17
The color conversion processing is performed on the image signals of red (magenta), yellow (yellow), and blue (cyan), and the image signals are sent to the optical writing device 18.

【００２５】一方、給紙部１３では、給紙ローラ３０の
いずれか一方を選択して回転し、当該給紙カセット２９
から用紙Ｐを送り出し、レジストローラ３１でタイミン
グをとって感光体２０の下側に向けて搬送する。On the other hand, in the paper feeding unit 13, one of the paper feeding rollers 30 is selected and rotated to move the paper feeding cassette 29.
The paper P is sent out from the photoconductor 20, and is conveyed toward the lower side of the photoconductor 20 at a timing by the registration roller 31.

【００２６】他方、感光体２０〜２３は、それぞれ回転
にともない帯電装置２４で各々の表面を一様に帯電す
る。そして、光書込み装置１８から、感光体２０の表面
に黒色の画像信号に基づくレーザ光を照射して静電潜像
を形成する。同様に、感光体２１〜２３の表面に、それ
ぞれ赤・黄・青色の画像信号に基づくレーザ光を照射し
て静電潜像を形成する。次いで、感光体２０〜２３上
に、それぞれの現像装置２５位置で各色のトナーを付着
して各々の静電潜像を可視像化する。そして、用紙Ｐを
搬送ベルト装置１９で搬送しながら、感光体２０〜２３
上の各色のトナー像を各々の転写装置２６により用紙Ｐ
上に転写して４色重ねのカラー画像を形成する。On the other hand, the surfaces of the photoconductors 20 to 23 are uniformly charged by the charging device 24 as they rotate. Then, the surface of the photoconductor 20 is irradiated with laser light based on a black image signal from the optical writing device 18 to form an electrostatic latent image. Similarly, the surface of each of the photoconductors 21 to 23 is irradiated with laser light based on red, yellow, and blue image signals to form an electrostatic latent image. Next, the toners of the respective colors are attached to the photoconductors 20 to 23 at the positions of the respective developing devices 25 to visualize the respective electrostatic latent images. Then, while the paper P is being conveyed by the conveyor belt device 19, the photoconductors 20 to 23 are
The toner image of each color on the paper P is transferred by the transfer device 26.
Transfer to the top to form a four-color overlaid color image.

【００２７】カラー画像の転写後は、感光体２０〜２３
の表面を各々のクリーニング装置２７でクリーニングす
る一方、用紙Ｐを搬送ベルト装置１９で定着装置２８へ
搬送する。そして、定着装置２８でカラー画像を定着
し、定着後、用紙Ｐを排出ローラ３２で図示しない排紙
トレイ上に排出する。After the transfer of the color image, the photoconductors 20-23
The surface of the sheet P is cleaned by each of the cleaning devices 27, while the sheet P is transported to the fixing device 28 by the transport belt device 19. Then, the color image is fixed by the fixing device 28, and after fixing, the paper P is discharged by the discharge roller 32 onto a discharge tray (not shown).

【００２８】ところで、上述した感光体２０〜２３は、
それぞれ同一の構造をなし、図１にそのうちの感光体２
０を示す。感光体２０は、ドラム３３の両端開口にそれ
ぞれフランジ３４を圧入し、フランジ３４の中心穴に感
光体軸３５を挿通し、その両端軸部を中心穴から突出さ
せてドラム３３と一体に回転するように取り付けてな
る。By the way, the above-mentioned photoconductors 20 to 23 are
Each of them has the same structure.
Indicates 0. The photoconductor 20 presses the flanges 34 into the openings of both ends of the drum 33, inserts the photoconductor shaft 35 into the center hole of the flange 34, and projects the shafts of both ends from the center hole to rotate integrally with the drum 33. It is attached as follows.

【００２９】また、感光体２０は、複写機本体に取り付
けたとき、前側（正面側）に位置するフランジ３４に掛
止穴３４ａを設けるとともに、感光体軸３５の前端軸部
３５ａ外周にねじ部３５ｂを設ける一方、たとえば図８
に示すように、反対の後側（奥側）に位置する後端軸部
３５ｃに、カップリング３６の一方連結部３６ａを設け
てなる。そして、その連結部３６ａの歯３６ｂを、駆動
軸３７の先端に設ける他方連結部３６ｃの歯３６ｄに軸
方向に噛み合わせて感光体軸３５を駆動軸３７と連結し
てなる。駆動軸３７は、図示しない感光体駆動モータ
（図示省略）のモータ軸である。When the photoconductor 20 is mounted on the main body of the copying machine, the flange 34 located on the front side (front side) is provided with a hook hole 34a, and a screw portion is provided on the outer periphery of the front end shaft portion 35a of the photoconductor shaft 35. 35b is provided, while FIG.
As shown in (1), one coupling portion 36a of the coupling 36 is provided on the rear end shaft portion 35c located on the opposite rear side (back side). The teeth 36b of the connecting portion 36a are axially meshed with the teeth 36d of the other connecting portion 36c provided at the tip of the drive shaft 37 to connect the photoconductor shaft 35 to the drive shaft 37. The drive shaft 37 is a motor shaft of a photoconductor drive motor (not shown) not shown.

【００３０】なお、カップリング３６として、図示実施
の形態では、ねじりクラッチ継手を用いる。つまり、連
結部３６ａ・３６ｃは、たとえば図７でも示すように、
拡径部３６ｅ・３６ｆの端面に噛３６ｂ・３６ｄを軸方
向に突出させて設け、それらの歯先面をそれぞれ周方向
に漸次傾斜させてなる。As the coupling 36, a torsion clutch joint is used in the illustrated embodiment. That is, the connecting portions 36a and 36c are, for example, as shown in FIG.
The end faces of the enlarged diameter portions 36e and 36f are provided with teeth 36b and 36d which project in the axial direction, and the tooth crests thereof are gradually inclined in the circumferential direction.

【００３１】そして、感光体２０は、複写機本体内の後
側で、感光体軸３５の後端軸部３５ｃを支持板（図示省
略）で回転自在に支持する。また、反対の前側で、感光
体軸３５の前端軸部３５ａを、後述する支持機構Ａに備
える支持板４０で回転自在に支持する。Then, the photoconductor 20 rotatably supports the rear end shaft portion 35c of the photoconductor shaft 35 on the rear side in the main body of the copying machine by a support plate (not shown). The front end shaft portion 35a of the photoconductor shaft 35 is rotatably supported on the opposite front side by a support plate 40 included in a support mechanism A described later.

【００３２】支持機構Ａには、複写機本体内の前側にお
いて、支持板４０をフランジ３４寄りの内側に設け、そ
の外側に支持板４０とは別個に規制板４１を設ける。そ
して、支持板４０の軸受４６に感光体軸３５の前端軸部
３５ａを通して感光体軸３５の上下方向位置を規制し、
その前端軸部３５ａを支持板４０で回転自在に支持す
る。さらに、規制板４１の軸受３９に前端軸部３５ａ先
端の細軸部分を通して回転自在に保持し、その感光体軸
３５のそれと直角な左右方向位置を規制する。そして、
それら支持板４０および規制板４１を、図示しない支持
構造体（図示省略）に取り付けてなる。なお、図示しな
いが、支持板４０は、その支持フレームに、前端軸部３
５ａ上を図中左右の前後方向に移動自在に取り付ける。In the support mechanism A, a support plate 40 is provided inside the copying machine main body inside the flange 34, and a regulation plate 41 is provided outside the support plate 40 separately from the support plate 40. Then, the front end shaft portion 35a of the photoconductor shaft 35 is passed through the bearing 46 of the support plate 40 to regulate the vertical position of the photoconductor shaft 35,
The front end shaft portion 35a is rotatably supported by the support plate 40. Further, the bearing 39 of the regulation plate 41 is rotatably held through the thin shaft portion at the tip of the front end shaft portion 35a to regulate the position of the photoconductor shaft 35 in the left-right direction perpendicular to that. And
The support plate 40 and the regulation plate 41 are attached to a support structure (not shown) not shown. Although not shown, the support plate 40 is provided on the support frame with the front end shaft portion 3
5a is attached so as to be movable in the left and right front and rear directions in the figure.

【００３３】また、この支持機構Ａには、支持板４０と
フランジ３４との間で前端軸部３５ａを圧縮コイルばね
４４に入れ、その圧縮コイルばね４４を感光体軸３５に
取り付けてなる。そして、支持板４０と規制板４１との
間でねじ部３５ｂに円筒状のねじノブ４５をねじ付けて
なる。しかして、ねじノブ４５をねじ付けることにより
支持板４０を後側（図１中右側）に移動して圧縮コイル
ばね４４を圧縮し、その圧縮コイルばね４４で感光体２
０を付勢してカップリング３６の歯３６ｂ・３６ｄをし
っかり噛み合わせてなる。In the support mechanism A, the front end shaft portion 35a is inserted into the compression coil spring 44 between the support plate 40 and the flange 34, and the compression coil spring 44 is attached to the photoconductor shaft 35. Then, a cylindrical screw knob 45 is screwed on the screw portion 35b between the support plate 40 and the regulation plate 41. Then, by screwing the screw knob 45, the support plate 40 is moved to the rear side (right side in FIG. 1) to compress the compression coil spring 44, and the compression coil spring 44 causes the photoreceptor 2 to move.
The teeth 36b and 36d of the coupling 36 are firmly meshed by urging 0.

【００３４】さて、上述した請求項１に記載の発明で
は、たとえば上記支持板４０に係合部材を移動自在に設
け、その係合部材を移動して感光体と係合させることに
よりその回転を規制するように構成するIn the invention described in claim 1, for example, an engaging member is movably provided on the support plate 40, and the engaging member is moved to engage the photosensitive member to rotate the member. Configure to regulate

【００３５】そのためまず、支持板４０に、図６および
図５に示すように、感光体２０の回転を規制する回転規
制手段５０を設ける。Therefore, first, as shown in FIGS. 6 and 5, the support plate 40 is provided with the rotation restricting means 50 for restricting the rotation of the photosensitive member 20.

【００３６】支持板４０には、その両側縁から軸受片４
０ａ・４０ａを切り起して軸受片４０ａ・４０ａ間の上
側に穴４０ｂを設ける。また、穴４０ｂの両側にばね押
え４２・４２を取り付ける。The bearing plate 4 is attached to the support plate 40 from both side edges thereof.
0a and 40a are cut and raised to form a hole 40b on the upper side between the bearing pieces 40a and 40a. Further, spring retainers 42 are mounted on both sides of the hole 40b.

【００３７】回転規制手段５０は、支持軸４８と、支持
軸４８を中心として回動する係合部部材４７と、係合部
材４７を押える圧縮スプリング４９・４９とを備える。The rotation restricting means 50 is provided with a support shaft 48, an engaging portion member 47 that rotates about the support shaft 48, and compression springs 49, 49 that press the engaging member 47.

【００３８】係合部材４７は、板金製で、両側縁に軸保
持部４７ａ・４７ｂを有する。軸保持部４７ａは、図４
に示すように板片を折り曲げてコ状に形成し、軸保持部
４７ｂは、図３に示すように板片を折り曲げてＬ状に形
成してなる。また、図６に示すように、係合部材４７に
は、図中下部４７ｃを、図５に示すように斜めに曲げ起
し、さらにその片側部分をほぼ直角に曲げ起してそこに
係合突部４７ｄを設けてなる。The engaging member 47 is made of sheet metal and has shaft holding portions 47a and 47b on both side edges. The shaft holding portion 47a is shown in FIG.
As shown in FIG. 3, the plate piece is bent to form a U shape, and the shaft holding portion 47b is formed by bending the plate piece into an L shape as shown in FIG. Further, as shown in FIG. 6, the engaging member 47 has a lower portion 47c in the drawing which is obliquely bent and raised as shown in FIG. The protrusion 47d is provided.

【００３９】そして、この係合部材４７を軸受片４０ａ
・４０ａ間に配置し、その軸受片４０ａ・４０ａおよび
軸保持部４７ａ・４７ｂに支持軸４８を挿通する。しか
して、支持軸４８の両端にワッシャ（図示省略）を掛け
止めて抜け止めし、係合部材４７を支持板４０に回動自
在に取り付ける。そして、ばね押え４２・４２間に圧縮
スプリング４９・４９を設けて係合部材４７を支持板４
０の板面に押し付けてなる。The engaging member 47 is connected to the bearing piece 40a.
40a, and the support shaft 48 is inserted into the bearing pieces 40a and 40a and the shaft holding portions 47a and 47b. Then, washers (not shown) are attached to both ends of the support shaft 48 to prevent the support shaft from coming off, and the engagement member 47 is rotatably attached to the support plate 40. Then, the compression springs 49, 49 are provided between the spring retainers 42, 42 so that the engaging member 47 is attached to the support plate 4.
It is pressed against the plate surface of 0.

【００４０】さらに、この請求項１に記載の発明では、
図１に示すように、規制板４１に解除レバー５１をほぼ
直角に立てて設けてなる。Further, according to the invention described in claim 1,
As shown in FIG. 1, a release lever 51 is provided on the regulation plate 41 so as to stand at a substantially right angle.

【００４１】しかして、規制板４１を取り付けたとき、
解除レバー５１の先端を穴４０ｂを通して係合部材４７
の背面に当て、その係合部材４７を解除レバー５１で押
して回動し、係合突部４７ｄが掛止穴３４ａから離れた
退避位置に保持してなる。When the regulation plate 41 is attached,
The tip of the release lever 51 is passed through the hole 40b and the engaging member 47
The engaging protrusion 47d is held at a retracted position apart from the hook hole 34a by pressing the engaging member 47 with the release lever 51 to rotate the engaging member 47.

【００４２】さて、上述したカラーレーザ複写機におい
て、たとえば感光体２０を交換するために取り外す場合
は、まず、規制板４１を前記支持フレームから外して感
光体軸３５の左右方向の位置規制を解く。すると、係合
部材４７の押し当てが解除され、係合部材４７が圧縮ス
プリング４９・４９により支持軸４８を中心として図１
中反時計方向に回動する。そして、図２に示すように、
係合突部４７ｄが掛止穴３４ａと係合する規制位置へ移
動して感光体２０の回転を規制する。In the color laser copying machine described above, when the photoconductor 20 is to be removed for replacement, for example, first, the regulation plate 41 is removed from the support frame to release the lateral regulation of the photoconductor shaft 35. . Then, the pressing of the engaging member 47 is released, and the engaging member 47 is compressed around the support shaft 48 by the compression springs 49.
Rotates counterclockwise. Then, as shown in FIG.
The engagement protrusion 47d moves to a regulation position where the engagement hole 34a is engaged, and regulates the rotation of the photoconductor 20.

【００４３】しかる後、ねじノブ４５を回動して感光体
軸３５の前端軸部３５ａから外す。そのとき、感光体２
０の掛止穴３４ａの穴縁を係合突部４７ｄに当てて感光
体２０の回転を止める。そして、支持板４０を前記支持
フレームから取り外してから、感光体軸３５と駆動軸３
７との連結を外して感光体２０を取り出す。After that, the screw knob 45 is rotated to be removed from the front end shaft portion 35a of the photoconductor shaft 35. At that time, the photoconductor 2
The edge of the hooking hole 34a of 0 is applied to the engaging projection 47d to stop the rotation of the photoconductor 20. Then, after removing the support plate 40 from the support frame, the photoconductor shaft 35 and the drive shaft 3 are removed.
The connection with 7 is removed and the photoconductor 20 is taken out.

【００４４】そして、新しい感光体２０を取り付けると
きは、複写機本体内に前側から該感光体２０を挿入し、
後側で、感光体軸３５の後端軸部３５ｃと駆動軸３７と
をカップリング３６を介して連結し、後端軸部３５ｃを
上記した後側の支持板で保持する。When mounting a new photoconductor 20, the photoconductor 20 is inserted from the front side into the main body of the copying machine,
On the rear side, the rear end shaft portion 35c of the photoconductor shaft 35 and the drive shaft 37 are connected via a coupling 36, and the rear end shaft portion 35c is held by the above-mentioned rear side support plate.

【００４５】しかして、前側で、感光体軸３５の前端軸
部３５ａを圧縮コイルばね４４に通してそれを取り付け
る。そして、前端軸部３５ａを、さらに支持板４０の軸
受４６に通して該支持板４０で保持する。しかして、そ
の支持板４０を押して係合部材４７の係合突部４７ｄを
掛止穴３４ａに係合し、感光体２０の回転を規制する。
その後、ねじ部３５ｂにねじノブ４５をねじ付けて圧縮
コイルばね４４を圧縮し、その圧縮コイルばね４４で感
光体２０を付勢してカップリング３６の互いの歯をしっ
かり噛み合わせる。Then, on the front side, the front end shaft portion 35a of the photosensitive member shaft 35 is passed through the compression coil spring 44 and attached thereto. Then, the front end shaft portion 35 a is further passed through the bearing 46 of the support plate 40 and held by the support plate 40. Then, the support plate 40 is pushed to engage the engaging protrusion 47d of the engaging member 47 with the latch hole 34a, thereby restricting the rotation of the photoconductor 20.
After that, the screw knob 45 is screwed to the screw portion 35b to compress the compression coil spring 44, and the compression coil spring 44 urges the photoconductor 20 to firmly mesh the teeth of the coupling 36 with each other.

【００４６】しかる後、支持板４０を上記支持フレーム
に取り付け、前端軸部３５ａの先端を規制板４１の軸受
３９に通して該規制板４１を上記支持フレームに取り付
ける。そのとき、解除レバー５１の先端を穴４０ｂを通
して係合部材４７の背面に押し当て、係合部材４７を圧
縮スプリング４９・４９に抗して図１中時計方向に回動
し、係合突部４７ｄを掛止穴３４ａから外して退避位置
へ移動する。そして、感光体２０の回転規制を解除す
る。Then, the support plate 40 is attached to the support frame, and the tip of the front end shaft portion 35a is passed through the bearing 39 of the control plate 41 to attach the control plate 41 to the support frame. At that time, the tip of the release lever 51 is pressed against the back surface of the engaging member 47 through the hole 40b, and the engaging member 47 is rotated clockwise against the compression springs 49, 49 in FIG. 47d is removed from the hook hole 34a and moved to the retracted position. Then, the rotation restriction of the photoconductor 20 is released.

【００４７】ところで、請求項２に記載の発明は、上述
した実施の形態に示したように、支持板４０で感光体軸
３５の上下方向位置を規制し、支持板４０とは別個に規
制板４１を設けてその規制板４１で感光体軸３５の左右
方向位置を規制し、該規制板４１を取り付けたとき係合
部材４７を押して前記規制位置から前記退避位置へと移
動することを特徴とする。According to the second aspect of the present invention, as shown in the above-described embodiment, the support plate 40 regulates the vertical position of the photoconductor shaft 35, and the regulation plate is provided separately from the support plate 40. 41 is provided, and the lateral position of the photoconductor shaft 35 is regulated by the regulating plate 41, and when the regulating plate 41 is attached, the engaging member 47 is pushed to move from the regulating position to the retracted position. To do.

【００４８】また、請求項３に記載の発明では、上述し
た実施の形態に示したように、係合部材４７が規制位置
と退避位置との間を移動するとき、互いに接触するその
係合部材４７と感光体２０の双方またはそのいずれか一
方の接触部分に、低摩擦部材を付着することを特徴とす
る。Further, in the invention described in claim 3, as shown in the above-mentioned embodiment, when the engaging member 47 moves between the restricting position and the retracted position, the engaging members contact each other. It is characterized in that a low friction member is attached to the contact portion of both 47 and the photoconductor 20 or one of them.

【００４９】たとえば図１０に示す実施の形態では、係
合部材４７の係合突部４７ｄの先端部に、ポリアセター
ルのような樹脂材料などからなる低摩擦部材５５を付着
する。そして、係合部材４７が規制位置と退避位置との
間を移動するとき、係合突部４７ｄが上記掛止穴３４ａ
の穴縁に引っ掛からないようにする。For example, in the embodiment shown in FIG. 10, a low friction member 55 made of a resin material such as polyacetal is attached to the tip of the engaging projection 47d of the engaging member 47. Then, when the engaging member 47 moves between the restricting position and the retracted position, the engaging protrusion 47d is locked by the engaging hole 34a.
Be careful not to get caught in the hole edge.

【００５０】なお、図１０では、係合部材４７の係合突
部４７ｄ側に低摩擦部材５５を付着したが、反対に、た
とえば感光体２０の掛止穴３４ａの穴縁側に低摩擦部材
を付着してもよい。In FIG. 10, the low-friction member 55 is attached to the engaging projection 47d side of the engaging member 47, but on the contrary, the low-friction member is attached to the hole edge side of the hooking hole 34a of the photoconductor 20, for example. May be attached.

【００５１】さて次に、請求項４に記載の発明では、上
記ねじノブ４５のようなねじ部材を回動したときに感光
体が一緒に回転しないように、上記回転規制手段５０に
代えて、非動作時、つまり記録を行わないときに、感光
体の回転をロックするロック機構を設けることを特徴と
する。Next, in the invention described in claim 4, in place of the rotation restricting means 50, the photosensitive member is prevented from rotating together when the screw member such as the screw knob 45 is rotated. It is characterized in that a lock mechanism is provided for locking the rotation of the photoconductor when it is not operating, that is, when recording is not performed.

【００５２】そのため、図１１中符号Ｂで示すようなロ
ック機構を設ける。ロック機構Ｂには、上記感光体軸３
５の後端軸部３５ｃに固定した歯車状の被係合部材６０
と、その被係合部材６０と係合するＬ状の係合部材６１
とを備える。Therefore, a lock mechanism as shown by reference numeral B in FIG. 11 is provided. The lock mechanism B includes the photoconductor shaft 3
5, gear-shaped engaged member 60 fixed to the rear end shaft portion 35c
And an L-shaped engaging member 61 that engages with the engaged member 60.
With.

【００５３】係合部材６１は、基端部をピン６２で保持
し、そのピン６２を中心として回動可能に、図示しない
支持部材に取り付けて支持する。また、その支持部材に
一端を掛け止めた引張ばね６３の他端を、ピン６２の図
中右横の近接した位置に掛け止めてなる。The engaging member 61 has a base end portion held by a pin 62, and is attached to and supported by a support member (not shown) so as to be rotatable around the pin 62. Further, the other end of the tension spring 63, one end of which is hooked on the support member, is hooked on the pin 62 at an adjacent position on the right side in the drawing.

【００５４】さらに、ロック機構Ｂには、係合部材６１
を回動させる第１および第２ソレノイド６４・６５を備
える。そして、第１ソレノイド６４を、係合部材６１の
下側で支持して作動杆６４ａを係合部材６１に連結し、
第２ソレノイド６５を、係合部材６１の上側で支持して
作動杆６５ａを係合部材６１に連結してなる。Further, the lock mechanism B includes an engaging member 61.
It has first and second solenoids 64 and 65 for rotating. Then, the first solenoid 64 is supported on the lower side of the engaging member 61 to connect the operating rod 64a to the engaging member 61,
The second solenoid 65 is supported on the upper side of the engaging member 61, and the operating rod 65a is connected to the engaging member 61.

【００５５】そして、第１ソレノイド６４をオンする
と、作動杆６４ａを引き込んで係合部材６１を図１１中
時計方向に回動し、先端係合部６１ａを被係合部材６０
に係合して感光体２０の回転を規制し、その規制状態を
引張ばね６３で行う。一方、第２ソレノイド６５をオン
すると、作動杆６５ａを引き込んで係合部材６１を反時
計方向に回動し、その先端係合部６１ａを被係合部材６
０から外して感光体２０の回転規制を解除し、その解除
状態を引張ばね６３で行うようにする。When the first solenoid 64 is turned on, the operating rod 64a is pulled in to rotate the engaging member 61 in the clockwise direction in FIG. 11 to move the tip engaging portion 61a to the engaged member 60.
The rotation of the photoconductor 20 is regulated by engaging with, and the regulated state is performed by the tension spring 63. On the other hand, when the second solenoid 65 is turned on, the operating rod 65a is pulled in to rotate the engaging member 61 counterclockwise, and the tip end engaging portion 61a of the engaging member 61 is engaged.
The rotation restriction of the photoconductor 20 is released by removing it from 0, and the released state is performed by the tension spring 63.

【００５６】しかして、この実施の形態では、記録を行
わないとき、第１ソレノイド６４をオンして感光体２０
の回転を規制し、記録を行うとき、第２ソレノイド６５
をオンして感光体の回転規制を解除する。そのため、た
とえばコピー可または不可を表示する表示ランプ（図示
省略）の各々の点灯動作に連動させて、第１および第２
ソレノイド６４・６５をそれぞれオンするようにする。Therefore, in this embodiment, when the recording is not performed, the first solenoid 64 is turned on to turn on the photosensitive member 20.
Of the second solenoid 65 when the rotation of the
Turn on to release the rotation restriction of the photoconductor. Therefore, for example, the first and second display lamps (not shown) that indicate whether copying is possible or impossible are interlocked with the first and second display lamps.
Turn on the solenoids 64 and 65 respectively.

【００５７】そして、図１２に示すように、前記表示ラ
ンプで青色点灯してコピー可の表示をするときは、非動
作時であるから、それと連動して第１ソレノイド６４を
オンし、係合部材６１を被係合部材６０に係合して感光
体２０の回転を規制する。その後、第１ソレノイド６４
をすぐにオフするが、引張ばね６３で係合部材６１を図
１１中時計方向に回動付勢してそのまま回転規制状態を
保持する。As shown in FIG. 12, when the indicator lamp is lit in blue to indicate that copying is possible, it is not in operation, so the first solenoid 64 is turned on in conjunction with it to engage. The rotation of the photoconductor 20 is regulated by engaging the member 61 with the engaged member 60. Then, the first solenoid 64
Is immediately turned off, but the tension spring 63 urges the engaging member 61 to rotate in the clockwise direction in FIG.

【００５８】また、表示ランプで赤色点灯してコピー不
可の表示をするときは、動作時であるから第２ソレノイ
ド６５をオンし、係合部材６１を被係合部材６０から外
して感光体２０の回転規制を解除する。その後、第２ソ
レノイド６５をすぐにオフするが、今度は引張ばね６３
で係合部材６１を図中反時計方向に回動付勢してそのま
ま規制解除状態を保持する。When the display lamp illuminates in red to indicate that copying is not possible, the second solenoid 65 is turned on because it is in operation, and the engaging member 61 is disengaged from the engaged member 60 so that the photosensitive member 20 is removed. Release the rotation restriction. Then, the second solenoid 65 is immediately turned off, but this time the tension spring 63
The engaging member 61 is urged to rotate in the counterclockwise direction in the figure to maintain the regulation release state.

【００５９】ところで、請求項５に記載の発明は、上述
した図１１および図１２に示した実施の形態のように、
前記ロック機構Ｂを、感光体２０と同軸に設ける被係合
部材６０と、それに係合して感光体の回転を止める係合
部材６１とで構成することを特徴とする。By the way, the invention described in claim 5 is the same as the embodiment shown in FIG. 11 and FIG.
The lock mechanism B is composed of an engaged member 60 provided coaxially with the photoconductor 20 and an engaging member 61 that engages with the engaged member 60 to stop the rotation of the photoconductor.

【００６０】次に、請求項６に記載の発明では、特に、
感光体の回転を規制するタイミングを、トラブル発生時
に合わせ、そのときにロック機構を作動して感光体の回
転を止めるように構成する。Next, in the invention described in claim 6, in particular,
The rotation of the photoconductor is regulated at the time of occurrence of a trouble, and at that time, the lock mechanism is operated to stop the rotation of the photoconductor.

【００６１】そのため、たとえば上述したカラーレーザ
複写機に、トラブル発生を検知する検知手段、たとえば
用紙のジャム検知手段を備え、そのジャム検知手段の検
知結果に連動して、たとえば上記ロック機構Ｂに備える
上記第１ソレノイド６４をオンするようにする。Therefore, for example, the above-mentioned color laser copying machine is provided with a detecting means for detecting the occurrence of a trouble, for example, a paper jam detecting means, and the lock mechanism B is provided with the detection result of the jam detecting means. The first solenoid 64 is turned on.

【００６２】そして、図１３に示すように、記録中に用
紙がジャムしたことを前記ジャム検知手段で検知したと
き、それに連動して第１ソレノイド６４をオンし、係合
部材６１を被係合部材６０に係合して感光体２０の回転
を規制して後、第１ソレノイド６４をオフする。そし
て、係合部材６１は、引張ばね６３の付勢力で被係合部
材６０に係合したままとし、そのまま感光体２０の回転
規制状態を保持する。なお、図示しないが、ジャム処理
後は、第２ソレノイド６５をオンして感光体２０の回転
規制を解除する。Then, as shown in FIG. 13, when the jam detecting means detects that the paper is jammed during recording, the first solenoid 64 is turned on in conjunction with the jam detecting means to engage the engaging member 61. After engaging the member 60 and restricting the rotation of the photoconductor 20, the first solenoid 64 is turned off. Then, the engaging member 61 remains engaged with the engaged member 60 by the urging force of the tension spring 63, and maintains the rotation restricted state of the photoconductor 20 as it is. Although not shown, after the jam processing, the second solenoid 65 is turned on to release the rotation restriction of the photoconductor 20.

【００６３】[0063]

【発明の効果】したがって、請求項１に記載の発明によ
れば、ねじノブを回して感光体を着脱するとき、その感
光体に係合部材を係合してその回転を規制する構成にす
るから、ねじノブを回動して感光体軸にねじ付けたりそ
の感光体軸から外したりするとき、その都度、従来の如
く感光体を手で押えてその回転を止める必要がなく、そ
の結果、感光体の着脱作業を面倒なく簡単にすることが
できる。Therefore, according to the first aspect of the present invention, when the screw knob is rotated to attach / detach the photoconductor, the engaging member is engaged with the photoconductor to restrict the rotation thereof. Therefore, when rotating the screw knob to screw it to the photoconductor shaft or remove it from the photoconductor shaft, it is not necessary to manually press the photoconductor to stop its rotation each time, and as a result, It is possible to easily and easily attach and detach the photoconductor.

【００６４】請求項２に記載の発明によれば、感光体軸
の左右方向位置を規制する規制板を利用し、その規制板
を取り付けると、その規制板で係合部材を押して退避位
置へ移動し感光体の回転規制を解除する構成にすること
により、その感光体の規制解除を簡単にすることができ
る。According to the second aspect of the present invention, the regulating plate for regulating the lateral position of the photoconductor shaft is used, and when the regulating plate is attached, the engaging member is pushed by the regulating plate to move to the retracted position. With the configuration in which the rotation restriction of the photoconductor is released, the restriction release of the photoconductor can be easily performed.

【００６５】請求項３に記載の発明によれば、係合部材
を感光体に係合したりその係合を解除したりするとき、
係合部材が低摩擦部材により感光体に引っ掛からないよ
うにし、これにより、感光体の回転規制およびその規制
解除を確実に行うことができる。According to the third aspect of the invention, when the engaging member is engaged with or released from the photoconductor,
The engagement member is prevented from being caught on the photoconductor by the low friction member, so that the rotation of the photoconductor can be regulated and the regulation can be released reliably.

【００６６】請求項４および５に記載の発明によれば、
非作動時、ロック機構により感光体をロックすることか
ら、ねじノブを回動するとき、従来の如く感光体を手で
押えてその回転を止める必要がなく、その結果、請求項
１の場合と同様に、感光体の着脱作業を面倒なく簡単に
することができる。According to the invention described in claims 4 and 5,
When the screw knob is rotated, it is not necessary to manually press the photosensitive member to stop the rotation when the screw knob is rotated. As a result, the photosensitive member is locked by the lock mechanism when not operating. Similarly, the work of attaching and detaching the photoconductor can be simplified without trouble.

【００６７】請求項６に記載の発明によれば、トラブル
発生時、非作動時か否かに関係なく、ロック機構を作動
して感光体をロックすることにより、トラブル処理のた
めにねじノブを回して感光体を着脱する場合に、その作
業を面倒なく簡単に行うことができる。According to the sixth aspect of the present invention, regardless of whether the trouble occurs or not, the lock mechanism is operated to lock the photoconductor, so that the screw knob can be used for troubleshooting. When the photoconductor is turned around and the photoconductor is attached or detached, the work can be easily performed without trouble.

【図面の簡単な説明】[Brief description of drawings]

【図１】請求項１および２に記載した発明のカラーレー
ザ複写機の実施の形態を示し、回転規制解除状態におけ
る感光体の一側部分の縦断面図である。FIG. 1 is a longitudinal sectional view of one side portion of a photoconductor in a rotation restriction released state, showing an embodiment of a color laser copying machine of the invention described in claims 1 and 2. FIG.

【図２】その感光体の回転規制状態における縦断面図で
ある。FIG. 2 is a vertical sectional view of the photosensitive member in a rotation restricted state.

【図３】係合部材の片側における支持軸への取付状態を
示す斜視図である。FIG. 3 is a perspective view showing a state where one side of the engagement member is attached to the support shaft.

【図４】その他側における取付状態を示す斜視図であ
る。FIG. 4 is a perspective view showing a mounting state on the other side.

【図５】支持板への係合部材取付状態を示す縦断面図で
ある。FIG. 5 is a vertical cross-sectional view showing a state in which an engagement member is attached to a support plate.

【図６】その正面図である。FIG. 6 is a front view thereof.

【図７】感光体軸と駆動軸とを連結するカップリング形
状を示す斜視図である。FIG. 7 is a perspective view showing a coupling shape for connecting a photoconductor shaft and a drive shaft.

【図８】その連結状態を示す側面図である。FIG. 8 is a side view showing the connected state.

【図９】上記カラーレーザ複写機の内部機構の概略構成
図である。FIG. 9 is a schematic configuration diagram of an internal mechanism of the color laser copying machine.

【図１０】請求項３に記載した発明の実施の形態を示
し、その係合部材の部分側面図である。FIG. 10 is a partial side view of an engaging member of the embodiment of the invention described in claim 3.

【図１１】請求項４および５に記載した発明の実施の形
態を示し、そのロック機構の構成説明図である。FIG. 11 shows an embodiment of the invention described in claims 4 and 5, and is a structural explanatory view of the lock mechanism thereof.

【図１２】そのロック機構による感光体の回転規制およ
び規制解除のタイミングを示すタイミングチャートであ
る。FIG. 12 is a timing chart showing timings of rotation restriction and restriction release of the photoconductor by the lock mechanism.

【図１３】請求項６に記載した発明の実施の形態を示
し、その感光体の回転規制および規制解除のタイミング
を示すタイミングチャートである。FIG. 13 is a timing chart showing an embodiment of the invention described in claim 6 and showing timings of rotation restriction and restriction release of the photoconductor.

【図１４】感光体の一側部分における感光体軸と駆動軸
の従来からの連結構造を示す斜視図である。FIG. 14 is a perspective view showing a conventional connecting structure of a photoconductor shaft and a drive shaft at one side portion of the photoconductor.

【図１５】従来の感光体の他側部分における縦断面図で
ある。FIG. 15 is a vertical cross-sectional view of the other side portion of the conventional photoconductor.

【符号の説明】[Explanation of symbols]

２０〜２３ 感光体 ３５ 感光体軸 ３６ カップリング ３７ 駆動軸 ４０ 支持板 ４１ 規制板 ４４ 圧縮コイルばね（ばね部材） ４５ ねじノブ（ねじ部材） ４７・６１ 係合部材 ５５ 低摩擦部材 ６０ 被係合部材 Ｂ ロック機構 20-23 Photoconductor 35 Photoconductor shaft 36 Coupling 37 Drive shaft 40 Support plate 41 Restriction plate 44 Compression coil spring (spring member) 45 Screw knob (screw member) 47/61 Engaging member 55 Low friction member 60 Engagement Member B Lock mechanism

───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 英世 東京都大田区中馬込１丁目３番６号 株式 会社リコー内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideyo Watanabe 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd.

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 ドラム状の感光体の感光体軸をそれに回
転を伝える駆動軸と一直線上に配し、それら感光体軸と
駆動軸とを、軸方向の凹凸で噛み合うカップリングを介
して連結する一方、前記感光体軸の他端側を支持板で回
転自在に支持し、その支持板と前記感光体との間に付勢
部材を設け、前記感光体軸にねじ部材をねじ付けること
により前記付勢部材を圧縮し、その付勢部材で前記感光
体を軸方向に付勢する電子写真装置において、 前記支持板に係合部材を、前記感光体と係合してその回
転を規制する規制位置と、その規制を解除する退避位置
とに移動自在に設けてなる、電子写真装置。1. A photosensitive body shaft of a drum-shaped photosensitive body is arranged in a straight line with a drive shaft for transmitting the rotation to the photosensitive body shaft, and the photosensitive body shaft and the drive shaft are connected via a coupling that meshes with an unevenness in the axial direction. On the other hand, by rotatably supporting the other end side of the photoconductor shaft with a support plate, providing a biasing member between the support plate and the photoconductor, and screwing a screw member to the photoconductor shaft. In an electrophotographic apparatus that compresses the biasing member and axially biases the photoconductor with the biasing member, an engagement member is engaged with the support plate to restrict rotation of the photoconductor. An electrophotographic apparatus that is movably provided in a regulation position and a retracted position for releasing the regulation. 【請求項２】 前記支持板で前記感光体軸の上下方向位
置を規制し、前記支持板とは別個に規制板を設けてその
規制板で前記感光体軸の左右方向位置を規制し、該規制
板を取り付けたとき前記係合部材を押して前記規制位置
から前記退避位置へと移動してなる、請求項１に記載の
電子写真装置。2. The support plate regulates the vertical position of the photoconductor shaft, the regulation plate is provided separately from the support plate, and the regulation plate regulates the lateral position of the photoconductor shaft. The electrophotographic apparatus according to claim 1, wherein when the regulation plate is attached, the engaging member is pushed to move from the regulation position to the retracted position. 【請求項３】 前記係合部材を移動するとき互いに接触
するその係合部材と前記感光体の双方またはそのいずれ
か一方の接触部分に、低摩擦部材を付着してなる、請求
項１または２に記載の電子写真装置。3. A low-friction member is attached to a contact portion of both or one of the engagement member and the photoconductor that come into contact with each other when moving the engagement member. The electrophotographic apparatus according to 1. 【請求項４】 ドラム状の感光体の感光体軸をそれに回
転を伝える駆動軸と一直線上に配し、それら感光体軸と
駆動軸とを、軸方向の凹凸で噛み合うカップリングを介
して連結する一方、前記感光体軸の他端側を支持板で回
転自在に支持し、その支持板と前記感光体との間に付勢
部材を設け、前記感光体軸にねじ部材をねじ付けること
により前記付勢部材を圧縮し、その付勢部材で前記感光
体を軸方向に付勢する電子写真装置において、 非動作時、前記感光体の回転をロックするロック機構を
備えてなる、電子写真装置。4. A photoconductor shaft of a drum-shaped photoconductor is arranged in a straight line with a drive shaft for transmitting rotation to the photoconductor shaft, and the photoconductor shaft and the drive shaft are connected via a coupling that meshes with the concave and convex in the axial direction. On the other hand, by rotatably supporting the other end side of the photoconductor shaft with a support plate, providing a biasing member between the support plate and the photoconductor, and screwing a screw member to the photoconductor shaft. An electrophotographic apparatus that compresses the biasing member and axially biases the photoconductor with the biasing member, comprising an locking mechanism that locks rotation of the photoconductor when not in operation. . 【請求項５】 前記ロック機構を、前記感光体と同軸に
設ける被係合部材と、それに係合して前記感光体の回転
を止める係合部材とで構成してなる、請求項４に記載の
電子写真装置。5. The lock mechanism according to claim 4, wherein the lock mechanism is composed of an engaged member provided coaxially with the photosensitive member, and an engaging member that engages with the engaged member to stop the rotation of the photosensitive member. Electrophotographic device. 【請求項６】 トラブル発生時、前記ロック機構を作動
してなる、請求項４または５に記載の電子写真装置。6. The electrophotographic apparatus according to claim 4, wherein the lock mechanism is operated when trouble occurs.