JP3376539B2 - Color image forming equipment - Google Patents
Color image forming equipmentInfo
- Publication number
- JP3376539B2 JP3376539B2 JP12154896A JP12154896A JP3376539B2 JP 3376539 B2 JP3376539 B2 JP 3376539B2 JP 12154896 A JP12154896 A JP 12154896A JP 12154896 A JP12154896 A JP 12154896A JP 3376539 B2 JP3376539 B2 JP 3376539B2
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming body
- image
- gear
- color image
- 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 - Fee Related
Links
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Color, Gradation (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
- Color Electrophotography (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、回転するドラム状
像形成体の周面に帯電、像露光及び現像を繰り返して複
数のトナー像の重ね合わせから成るカラー画像を外周面
に形成する電子写真方式のカラー画像形成装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus for forming a color image on the outer peripheral surface of a rotating drum-shaped image forming body by repeating charging, image exposure and development to superpose a plurality of toner images. System color image forming apparatus.
【0002】[0002]
【従来の技術】多色のカラー画像を形成する装置とし
て、像形成体の一回転中に各色に対応する画像の像露
光、現像を順次反復して各色のトナー像を像形成体上に
重ね合わせカラー画像を形成するカラー画像形成装置は
知られている。その画像形成装置は、像形成体の外周
に、複数の帯電手段、像露光手段及び現像手段を配置す
ると共に、カラー画像を転写される転写材の搬送領域や
クリーニング手段も設けなくてはならないので、周面長
の長い大径の像形成体を必要として大型化し、バランス
も悪くなると言う欠点がある。2. Description of the Related Art As an apparatus for forming a multicolor image, a toner image of each color is superposed on the image forming body by sequentially repeating image exposure and development of an image corresponding to each color during one rotation of the image forming body. A color image forming apparatus that forms a combined color image is known. In the image forming apparatus, a plurality of charging means, image exposing means and developing means must be arranged on the outer periphery of the image forming body, and a transfer material carrying area for transferring a color image and a cleaning means must be provided. However, there is a drawback in that a large diameter image forming body having a long peripheral surface length is required, the size is increased, and the balance is deteriorated.
【0003】上述の欠点を解消する装置として、像形成
体の基体を透明体にし、複数の像露光手段を像形成体の
内部に収容して、像形成体の内側から像露光するように
した装置が提案されている。かかる装置においては、鮮
明なカラー画像を形成するために、回転する像形成体と
固定の複数の像露光手段の関係位置精度が安定して正確
に保たれることを要求されるとともに、像形成体と複数
の現像器の現像剤層搬送ローラとが所定の間隙を保って
所定の速度で円滑な回転を行うことを要求される。また
小径の像形成体の交換等の保守が容易に行われるよう
に、像形成体とその駆動系の接離が容易に行い得ること
も要求される。しかし、従来の像形成体内部に像露光手
段を収容したカラー画像形成装置は、それらの要求を十
分に満足するものではなかった。As an apparatus for solving the above-mentioned drawbacks, the base body of the image forming body is made transparent, a plurality of image exposing means are housed inside the image forming body, and image exposure is performed from the inside of the image forming body. A device has been proposed. In such an apparatus, in order to form a clear color image, the positional accuracy of the relationship between the rotating image forming body and the plurality of fixed image exposing means is required to be stably and accurately maintained, and the image forming is performed. It is required that the body and the developer layer conveying rollers of the plurality of developing devices maintain a predetermined gap and smoothly rotate at a predetermined speed. It is also required that the image forming body and its drive system can be easily brought into and out of contact with each other so that maintenance such as replacement of the small diameter image forming body can be easily performed. However, the conventional color image forming apparatus in which the image exposing means is housed inside the image forming body has not sufficiently satisfied those requirements.
【0004】[0004]
【発明が解決しようとする課題】本発明は、上述のカラ
ー画像形成装置の要求を十分満足させるためになされた
ものであり、像形成体と複数の像露光手段の関係位置精
度が安定して正確に保たれて色ずれのないカラー画像を
容易に形成することができ、像形成体の交換等の保守を
容易に行うことができる像形成体内部に像露光手段を収
容したカラー画像形成装置で、形成体と複数の現像器の
現像剤層搬送ローラとが所定の間隙及び位置関係を保っ
てそれぞれ安定した位置で円滑な回転を行うカラー画像
形成装置の提供を第1の目的とし、更には像形成体と現
像器の現像剤層搬送ローラの駆動系の組み立て、分解、
保守を容易に行うことができるカラー画像形成装置の提
供を第2の目的とする。SUMMARY OF THE INVENTION The present invention has been made in order to sufficiently satisfy the requirements of the color image forming apparatus described above, and the positional accuracy of the relationship between the image forming body and the plurality of image exposing means is stable. A color image forming apparatus in which an image exposing unit is housed inside an image forming body capable of easily forming a color image which is kept accurately and can be easily formed and in which maintenance such as replacement of the image forming body can be easily performed. in the former and a plurality of developing devices of the developer layer transport rollers to provide a color image forming apparatus for performing smooth rotation in each stable position with a predetermined gap and the positional relationship with the first object, a further Assembly, disassembly of the drive system of the image forming body and the developer layer conveying roller of the developing device,
A second object is to provide a color image forming apparatus that can be easily maintained.
【0005】[0005]
【課題を解決するための手段】本発明は、回転するドラ
ム状像形成体の周面に帯電、像露光及び現像を繰り返し
て複数のトナー像の重ね合わせから成るカラー画像を外
周面に形成するカラー画像形成装置において、一端部に
ドラム歯車を有する前記像形成体が光学系支持体に配設
した複数の像露光手段を内部に収容して装置本体の側板
に固定された前記光学系支持体と相対回転可能に係合す
ることで装置本体内に設置され、該像形成体の外周面に
複数の現像器が現像剤層搬送ローラを接近させて配設さ
れて、前記像形成体を回転させるモータと回転伝達歯車
列及び前記現像剤層搬送ローラを回転させるモータと回
転伝達歯車列とが前記側板に支持されていると共に、前
記ドラム歯車と噛合する駆動歯車及び前記現像器の現像
剤層搬送ローラ歯車と噛合する駆動歯車が斜歯歯車であ
って、それら駆動歯車の駆動力の軸方向分力を同方向と
し像形成体と現像器の位置安定に利用することを特徴と
する構成によって、像形成体と複数の像露光手段の関係
位置精度が安定して正確に保たれて色ずれのないカラー
画像を容易に形成することができ、像形成体の交換等の
保守を容易に行うことができ、像形成体と複数の現像器
の現像剤層搬送ローラとが所定の間隙及び位置関係を保
ってそれぞれ安定した位置で円滑な回転を行う前記第1
の目的を達成する。According to the present invention, a color image formed by superposing a plurality of toner images is formed on the outer peripheral surface by repeating charging, image exposure and development on the peripheral surface of a rotating drum image forming body. in the color image forming apparatus, one end portion to the image forming member is the optical system support which is fixed to the side plate of the housing to the apparatus body therein a plurality of image exposure means disposed in the optical system support having a drum gear It is installed in the main body of the apparatus by being engaged with the body so that it can rotate relative to the body, and
A plurality of developing devices are arranged with the developer layer transport roller close to each other.
And a rotation transmission gear that rotates the image forming body.
A row and a motor for rotating the developer layer conveying roller
The rolling transmission gear train is supported by the side plate, and the front
Drive gear meshing with the drum gear and development of the developing device
The drive gear that meshes with the agent layer transfer roller gear is a helical gear.
The axial component of the driving force of those drive gears to the same direction.
The configuration to be image forming body and positional stability utilized to characterized Rukoto of the developing device, the relationship positional accuracy of the image forming body and a plurality of image exposure means stably and accurately kept free from color shift color image Can be easily formed, and maintenance such as replacement of the image forming body can be easily performed .
Maintain a predetermined gap and positional relationship with the developer layer transport roller of
Each of the above-mentioned first parts performs smooth rotation at stable positions .
Achieve the purpose of.
【0006】[0006]
【0007】[0007]
【0008】[0008]
【0009】[0009]
【0010】また請求項1の構成に請求項2の、前記像
形成体に対する回転伝達系と現像器の現像剤層搬送ロー
ラに対する回転伝達系とが一体化されてユニットとして
前記側板に支持されていることを特徴とする構成が加わ
ることによって、像形成体と現像器の現像剤層搬送ロー
ラの駆動系の組み立て、分解、保守を容易に行うことが
できる前記第2の目的を達成する。[0010] Claim 1 arrangement of claim 2 in the, is supported by the side plate as a rotation transmission system and it is an integrated unit for the developer layer transport rollers rotation transmission system and the developing device for the image forming body By the addition of the constitution characterized by the above, the second object that the assembly, disassembly and maintenance of the drive system of the image forming body and the developer layer conveying roller of the developing device can be easily achieved is achieved.
【0011】[0011]
【発明の実施の形態】以下、図面を参照して実施の形態
により本発明を説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the accompanying drawings.
【0012】先ず図1乃至図3により本発明に係るカラ
ー画像形成装置の構成を説明する。First, the structure of a color image forming apparatus according to the present invention will be described with reference to FIGS.
【0013】図における10はドラム状の像形成体であ
り、光学ガラスもしくは透明アクリル樹脂等の透明部材
から成る円筒状基体の外周に透明導電層,有機感光体層
(OPC)を塗布等により形成した感光体ドラムの両端
部の内径に、それぞれ内周に軸受が嵌合する端部環10
Aと外周にドラム歯車10Gを有するドラム歯車部材の
端部歯車環10Bを一体的に嵌着して成る。なお、図示
例は端部歯車環10Bを外歯車のドラム歯車10Gを有
するものにしているが、内歯車のドラム歯車10Gを有
するものとしてもよいことは勿論である。Reference numeral 10 in the drawing denotes a drum-shaped image forming body, which is formed by coating a transparent conductive layer and an organic photoconductor layer (OPC) on the outer periphery of a cylindrical substrate made of a transparent member such as optical glass or transparent acrylic resin. The end ring 10 in which the bearings are fitted to the inner circumferences of the inner diameters of both ends of the photoconductor drum.
A and an end gear ring 10B of a drum gear member having a drum gear 10G on the outer circumference are integrally fitted. In the illustrated example, the end gear ring 10B has the external gear drum gear 10G, but it is of course possible to have the internal gear drum gear 10G.
【0014】11Y〜11Kはスコロトロンコロナ放電
器を用いた帯電器であり、12Y〜12Kは像形成体1
0の軸方向に平行に配列したLEDと結像素子としての
商品名セルフォックレンズとから構成された像露光手段
である。像露光手段12Y〜12Kには別体の例えば画
像読み取り装置によって読み取られた分解色等の色別画
像信号がメモリより順次取り出されてそれぞれ電気信号
として入力される。11Y to 11K are chargers using a scorotron corona discharger, and 12Y to 12K are image forming members 1.
The image exposing means is composed of LEDs arranged in parallel with the axis direction of 0 and a SELFOC lens under the trade name as an image forming element. To the image exposure units 12Y to 12K, separate color image signals such as separated colors read by an image reading device are sequentially taken out from the memory and input as electric signals.
【0015】像形成体10と像露光手段12Y〜12K
はユニット3に一体的に組み込まれている。それについ
て、ユニット軸31とそれに固定された前後一対のブラ
ケット32,33が光学系支持体30を構成していて、
像形成体10は、両端部の端部環10Aと端部歯車環1
0Bに嵌合する軸受がそれぞれブラケット32,33の
外径に嵌合することによって、光学系支持体30に回転
可能に結合される。その前に像露光手段12Y〜12K
は、像形成体10の感光体ドラム内面に対する距離が所
定の位置関係となるように、それぞれの両端部が貼付部
材34を介し調節されて光学系支持体30のブラケット
32,33の外径に接着固定される。これによって像形
成体10に対する像露光手段12Y〜12Kの関係位置
を精度よく設定できるから、像露光手段12Y〜12K
により像形成体10にそれぞれ形成する静電潜像の位置
を正確に合わすことが容易にでき、色ずれのないカラー
画像を容易に形成できる。Image forming body 10 and image exposing means 12Y to 12K
Are integrated in the unit 3. Regarding this, the unit shaft 31 and a pair of front and rear brackets 32 and 33 fixed to the unit shaft 31 constitute the optical system support 30,
The image forming body 10 includes an end ring 10A at both ends and an end gear ring 1
The bearings fitted to OB are fitted to the outer diameters of the brackets 32 and 33, respectively, so that the bearings are rotatably connected to the optical system support 30. Before that, the image exposure means 12Y to 12K
Are adjusted to have the outer diameters of the brackets 32 and 33 of the optical system support 30 by adjusting both ends of the image formation body 10 through the attaching members 34 so that the distance between the image forming body 10 and the inner surface of the photoconductor drum has a predetermined positional relationship. Adhesively fixed. As a result, the relative positions of the image exposing means 12Y to 12K with respect to the image forming body 10 can be set with high accuracy, so that the image exposing means 12Y to 12K.
Thus, it is possible to easily align the positions of the electrostatic latent images formed on the image forming bodies 10 accurately, and it is possible to easily form a color image having no color shift.
【0016】ユニット軸31は、保持した像形成体10
や像露光手段12Y〜12Kを配設したブラケット3
2,33が両側板部と連結梁部とから成るコ字状ブラケ
ット35の両側板部間に位置して、両端部が両側板部か
ら突出するように、両側板部に回転可能に装着される。
そして一方の側板部の外側に突出したユニット軸31の
端部には位相ピン36が植設され、他方の側板部の外側
に突出した端部には先端部ナット37により前面板38
が締め付け固定される。これによってユニット3が構成
される。The unit shaft 31 is used to hold the image forming body 10 held.
And a bracket 3 provided with image exposure means 12Y to 12K
2, 33 are located between both side plate portions of a U-shaped bracket 35 composed of both side plate portions and connecting beam portions, and are rotatably mounted on both side plate portions so that both ends project from the both side plate portions. It
A phase pin 36 is planted at the end of the unit shaft 31 protruding to the outside of one of the side plates, and a front nut 38 is attached to the end of the other side plate to protrude to the outside by a tip nut 37.
Is tightened and fixed. This constitutes the unit 3.
【0017】なお、像露光手段12Y〜12Kに対する
配線は、各像露光手段12Y〜12Kからコネクタを介
し接続した電気配線が、光学系支持体30のブラケット
32の有する肉抜き穴と像形成体10の端部環10Aの
中心孔から像形成体10の外側に出され、コ字状ブラケ
ット35の側板部の切欠部35Aを経て前面板38の外
側で信号用や電源用配線とコネクタにより接続されるよ
うに設けられる。この様に多数の配線を像形成体の着脱
方向の手前から出すことにより、奥側の後側板70側に
おける電気配線が複雑になることを防止し、現像器13
Y〜13Kや像形成体10の駆動系を配置することが容
易にできるようにする。また像形成体10の着脱におい
ても、給電が着脱方向手前側からのために、接続や取り
外しが確実に容易に行われ、或いは結線したまま着脱す
ることも可能になし得る。Regarding the wiring for the image exposing means 12Y to 12K, the electric wiring connected from each of the image exposing means 12Y to 12K through the connector is the lightening hole of the bracket 32 of the optical system support 30 and the image forming body 10. Of the end ring 10A from the center hole of the image forming body 10 to the outside of the front plate 38 through the notch 35A of the side plate of the U-shaped bracket 35, and is connected to the wiring for signals and power by a connector. Is provided. By thus providing a large number of wirings from the front side in the attaching / detaching direction of the image forming body, it is possible to prevent the electric wirings on the rear side rear plate 70 side from becoming complicated, and to prevent the developing device 13 from developing.
Y to 13K and the drive system of the image forming body 10 can be easily arranged. Also, when the image forming body 10 is attached and detached, since the power is supplied from the front side in the attaching and detaching direction, the connection and the detachment can be reliably and easily performed, or the image forming body 10 can be attached and detached while being connected.
【0018】前面板38には帯電器11Y〜11Kの挿
入口38Aが設けられている。コ字状ブラケット35
は、ユニット3を床面に置く際に連結梁部を床面上に当
てる底面とすることで、像形成体10や像露光手段12
Y〜12Kを床面に接触させることのない置き台として
も利用される。The front plate 38 is provided with insertion ports 38A for the chargers 11Y to 11K. U-shaped bracket 35
Is a bottom surface against which the connecting beam portion is placed on the floor surface when the unit 3 is placed on the floor surface.
It is also used as a stand that does not allow Y-12K to contact the floor.
【0019】ユニット3は、ユニット軸31の位相ピン
36側を先頭にして、装置本体の前側板70に設けた挿
入穴70Aから、コ字状ブラケット35の連結梁部を装
置本体の前後側板70の間に設けた案内支持レール71
に係合させて装置本体内に送り込まれ、像形成体10の
ドラム歯車10Gを駆動歯車62に噛合させると共に、
位相ピン36を装置本体の後側板70に設けた軸受座7
2に形成された位置決めテーパー溝に係合させ、その状
態で前面板38をネジ止めにより装置本体の前側板70
に固定される。それによって、像形成体10と像露光手
段12Y〜12Kが正確な位置と位相で装置本体内に設
置される。In the unit 3, with the phase pin 36 side of the unit shaft 31 as the head, the connecting beam portion of the U-shaped bracket 35 is inserted through the insertion hole 70A provided in the front side plate 70 of the apparatus main body to the front and rear side plates 70 of the apparatus main body. Guide support rail 71 provided between
And is fed into the apparatus main body to mesh the drum gear 10G of the image forming body 10 with the drive gear 62,
Bearing seat 7 in which the phase pin 36 is provided on the rear plate 70 of the apparatus main body
2 is engaged with the positioning taper groove formed in FIG.
Fixed to. As a result, the image forming body 10 and the image exposing means 12Y to 12K are installed in the main body of the apparatus at accurate positions and phases.
【0020】なお図3の例では、前面板38を装置本体
の前側板70に固定するのに、前面板38に設けた複数
の基準穴H1に前側板70の備える基準ピンP2を係合
させて前面板38の位置決めを行うようにしているか
ら、最初に前面板38を装置本体の前側板70に固定す
るときは、ユニット軸31と先端部ナット37で前面板
38を回らないように締め付け固定するのは基準穴H1
と基準ピンP2を係合させてから行う。In the example of FIG. 3, in order to fix the front plate 38 to the front plate 70 of the apparatus main body, the reference pins P2 of the front plate 70 are engaged with the plurality of reference holes H1 provided in the front plate 38. Since the front plate 38 is positioned by using the unit shaft 31 and the tip nut 37 when the front plate 38 is first fixed to the front plate 70 of the apparatus body, the front plate 38 is tightened so as not to rotate. Fix the reference hole H1
And the reference pin P2 are engaged with each other.
【0021】帯電器11Y〜11Kは、それぞれ受電端
子側を先頭に前側板70に取り付けた前面板38の挿入
口38Aから装置本体内に挿入し、前後側板70間に設
けた案内支持レール73の案内で受電端子が後側板70
に設けた給電端子と接続するように送り込んだ後、挿入
口38Aに押し蓋39をネジ止めすることによって、像
形成体10に対し所定の間隔位置を保ち作動可能に設置
される。従ってユニット3を装置本体から取り外すの
は、先に帯電器11Y〜11Kを挿入口38Aから取り
出した後に前面板38を前側板70から外して引き出す
ことになる。この他、ユニット3の取り外しに先立っ
て、像形成体10の周面に対する後述の現像器13Y〜
13K、中間転写ベルト14ならびにクリーニング装置
100のクリーニングブレードの各圧接作用を従来公知
の手段等で解除して1mm程度以上は退避させて置くの
が必要であることは言うまでもない。Each of the chargers 11Y to 11K is inserted into the main body of the apparatus through the insertion opening 38A of the front plate 38 attached to the front plate 70, with the power receiving terminal side at the head, and the guide support rail 73 provided between the front and rear side plates 70 is inserted. According to the guide, the power receiving terminal is the rear side plate 70
After being fed so as to be connected to the power supply terminal provided on the image forming body 10, the push lid 39 is screwed to the insertion opening 38A so that the image forming body 10 is operably installed at a predetermined distance. Therefore, in order to remove the unit 3 from the main body of the apparatus, the chargers 11Y to 11K are first taken out from the insertion opening 38A, and then the front plate 38 is removed from the front side plate 70 and pulled out. In addition, prior to the removal of the unit 3, a developing device 13Y to be described later with respect to the peripheral surface of the image forming body 10 will be described.
Needless to say, it is necessary to release the pressure contact action of 13K, the intermediate transfer belt 14 and the cleaning blade of the cleaning device 100 by a conventionally known means or the like, and retreat for about 1 mm or more.
【0022】13Y〜13Kはそれぞれイエロー
(Y),マゼンタ(M),シアン(C)及び黒色(K)
のトナーを用いた現像剤を収容する現像器であり、前側
板70側から装置本体内に挿入されて前後側板70間に
設けた案内支持レール74に従って係止案内75で止め
られるまで送り込まれ、次いで図2に示した例では、接
離操作ハンドル40で偏心溝カム41を回動させて案内
支持レール74の下面側に支持された偏心溝カム41と
係合する接離作用軸42を軸方向に変位させ、それによ
り該軸に設けたバネで現像器13Y〜13Kをそれらの
現像スリーブ130の両側の回転自在のスペーサーロー
ラが像形成体10に圧接するように押すことで装置本体
内に設置される。これによって現像スリーブ130と一
体のスリーブ歯車133〜136に後述する減速駆動歯
車53〜56が噛合する。以上の逆の操作で現像器13
Y〜13Kの像形成体10に対する圧接解除や装置本体
からの取り出しができる。13Y to 13K are yellow (Y), magenta (M), cyan (C) and black (K), respectively.
Is a developing device for accommodating the developer using the toner, and is fed from the side of the front side plate 70 into the main body of the apparatus until it is stopped by the locking guide 75 according to the guide support rail 74 provided between the front and rear side plates 70, Next, in the example shown in FIG. 2, the engagement / separation action shaft 42 that engages with the eccentric groove cam 41 supported on the lower surface side of the guide support rail 74 is rotated by rotating the eccentric groove cam 41 with the contact / separation operation handle 40. Direction, and by pushing the developing devices 13Y to 13K by the springs provided on the shafts so that the rotatable spacer rollers on both sides of the developing sleeves 130 come into pressure contact with the image forming body 10, they are moved into the apparatus main body. Is installed. As a result, the reduction gears 53 to 56 described later mesh with the sleeve gears 133 to 136 integrated with the developing sleeve 130. Reverse the above operation to the developing device 13
The pressure contact of Y to 13K with respect to the image forming body 10 can be released, and the image forming body 10 can be taken out from the apparatus main body.
【0023】設置された現像器13Y〜13Kは、図1
に示したように、像形成体10の回転中心を通る垂線X
Xの左右に略対称的かつ回転中心を通る水平線YYの上
下に別れる位置を占め、現像剤層搬送ローラである現像
スリーブ130が像形成体10と所定の間隙を保って同
じ表面移動方向で回転し、それぞれ帯電器11Y〜11
Kによる帯電と像露光手段12Y〜12Kによる像露光
とによって像形成体10上に形成された静電潜像を現像
スリーブ130への現像バイアス電圧の印加により現像
スリーブ130の搬送する現像剤層が非接触の条件でト
ナー像に反転現像する。The developing devices 13Y to 13K installed are shown in FIG.
As shown in, the vertical line X passing through the center of rotation of the image forming body 10
The developing sleeve 130, which is a developer-conveying roller, occupies positions that are substantially symmetrical to the left and right of X and that are separated above and below a horizontal line YY that passes through the center of rotation, and rotates in the same surface movement direction as the image forming body 10 while maintaining a predetermined gap. Each of the chargers 11Y to 11
The electrostatic latent image formed on the image forming body 10 by the charging by K and the image exposure by the image exposing means 12Y to 12K causes a developer layer carried by the developing sleeve 130 by applying a developing bias voltage to the developing sleeve 130. Reverse development is performed on the toner image under non-contact conditions.
【0024】次に上述のカラー画像形成装置の画像形成
プロセスを説明する。Next, an image forming process of the above-mentioned color image forming apparatus will be described.
【0025】本装置とは別体の画像読み取り装置で原稿
画像を撮像素子により読み取った画像情報或いはコンピ
ュータで編集された画像情報がY,M,C及びKの色別
の画像信号として一旦メモリに記憶され格納される。Image information obtained by reading an original image by an image pickup device or an image information edited by a computer by an image reading device separate from the present device is temporarily stored in a memory as Y, M, C and K color-specific image signals. Stored and stored.
【0026】画像記録のスタートにより感光体駆動モー
タが始動して駆動歯車62が回転され像形成体10を前
述のように回転させる。同時に帯電器11Yの帯電作用
が開始されて像形成体10の周壁に一様に電位を付与す
る。その電位を付与された周壁内面に像露光手段12Y
が前述のメモリからの第1色例えばYの画像信号によっ
て変調された像露光を入射して周壁表面に原稿画像のY
成分画像に対応する静電潜像を形成する。その静電潜像
が現像器13Yにより現像スリーブ130上の現像剤層
を非接触にした条件で反転現像され、像形成体10の表
面にYトナー像が形成される。When the image recording is started, the photosensitive member drive motor is started and the drive gear 62 is rotated to rotate the image forming body 10 as described above. At the same time, the charging action of the charger 11Y is started to uniformly apply a potential to the peripheral wall of the image forming body 10. The image exposing means 12Y is provided on the inner surface of the peripheral wall to which the electric potential is applied.
Is incident on the image exposure modulated by the image signal of the first color, for example, Y from the above-mentioned memory, and Y of the original image is projected on the surface of the peripheral wall.
An electrostatic latent image corresponding to the component image is formed. The electrostatic latent image is reversely developed by the developing device 13Y under the condition that the developer layer on the developing sleeve 130 is not in contact, and a Y toner image is formed on the surface of the image forming body 10.
【0027】次いで像形成体10はYトナー像を保持す
る周壁表面に帯電器11Mによる帯電作用を受けて一様
に電位を付与され、その電位を付与された周壁内面に像
露光手段12Mの第2色例えばMの画像信号に基づく像
露光を入射される。それによって周壁表面に形成された
静電潜像が現像器13Mによる非接触の反転現像により
Mトナー像に現像されることで、像形成体10の表面に
Yトナー像とMトナー像の重ね合わせから成る2色像が
形成される。Next, the image forming body 10 is uniformly given a potential to the surface of the peripheral wall holding the Y toner image by the charging device 11M, and the inner surface of the peripheral wall to which the potential has been applied is provided with the image exposing means 12M. Image exposure based on image signals of two colors, for example, M is made incident. As a result, the electrostatic latent image formed on the peripheral wall surface is developed into an M toner image by non-contact reversal development by the developing device 13M, so that the Y toner image and the M toner image are superimposed on the surface of the image forming body 10. A two-color image is formed.
【0028】2色像を保持する像形成体10の周壁は同
様にそれぞれ帯電器11C、像露光手段12C及び現像
器13Cによる帯電作用、像露光入射及び現像を受けて
表面にCトナー像を形成されることでY,M,Cの3ト
ナー像の重ね合わせから成る3色像を形成される。また
必要に応じて更に3色像を保持する像形成体10の周壁
は同様にそれぞれ帯電器11K、像露光手段12K及び
現像器13Kによる帯電作用、像露光入射及び現像を受
けて表面にKトナー像を形成されることでY,M,C,
Kの4トナー像の重ね合わせから成る4色像を形成され
る。即ち、3色又は4色カラー画像が像形成体10の一
回転内でその周面上に形成される。Similarly, the peripheral wall of the image forming body 10 which holds the two-color image is subjected to the charging action by the charger 11C, the image exposing means 12C and the developing device 13C, the image exposure incidence and the development to form a C toner image on the surface. By doing so, a three-color image is formed by superimposing the three toner images of Y, M, and C. Further, if necessary, the peripheral wall of the image forming body 10 which further holds a three-color image is similarly subjected to the charging action by the charger 11K, the image exposing means 12K and the developing device 13K, the image exposure incident and the development, and K toner on the surface. By forming an image, Y, M, C,
A four-color image is formed by superposing K four-toner images. That is, a three-color or four-color image is formed on the peripheral surface of the image forming body 10 within one rotation.
【0029】以上のように本発明のカラー画像形成装置
では、像露光手段12Y〜12Kが像形成体10の内部
から透明基体を通して有機感光層に像露光を入射するか
ら、第1色の像露光だけでなく、第2,第3及び第4の
色に対応した像露光も先に形成されたトナー像の影響を
受けることなく入射されて、同様の鮮明なトナー像を与
える静電潜像を形成する。像露光手段12Y〜12Kの
動作による像形成体10の温度上昇の防止と温度の安定
化は、例えば光学系支持体30に熱伝導性の良好な材料
を用い、高温の場合はヒートパイプにより外部に放熱し
て冷却し、低温の場合はヒータを用いて加熱することに
より達成できる。また現像器13Y〜13Kによる現像
に際しては、それぞれ現像スリーブ130に直流又は更
に交流を加えた現像バイアスを印加する。それによって
現像スリーブ130上の一成分或いは二成分現像剤層か
らトナーが透明電導層を接地された像形成体10に飛翔
して付着する非接触反転現像が行われる。As described above, in the color image forming apparatus of the present invention, the image exposing means 12Y to 12K make image exposure of the first color from the inside of the image forming body 10 through the transparent substrate to the organic photosensitive layer. Not only that, the image exposures corresponding to the second, third, and fourth colors are also incident without being affected by the toner image previously formed, and an electrostatic latent image that gives a similar clear toner image is obtained. Form. The temperature rise of the image forming body 10 is prevented and the temperature is stabilized by the operation of the image exposing means 12Y to 12K, for example, a material having a good thermal conductivity is used for the optical system support 30, and when the temperature is high, it is externalized by a heat pipe. It can be achieved by radiating heat to the substrate to cool it, and when the temperature is low, heating it with a heater. Further, at the time of development by the developing devices 13Y to 13K, a developing bias in which direct current or further alternating current is applied is applied to the developing sleeve 130, respectively. As a result, non-contact reversal development is performed in which toner flies from the one-component or two-component developer layer on the developing sleeve 130 to the transparent conductive layer and is attached to the grounded image forming body 10.
【0030】かくして像形成体10の周面上に形成され
た3色又は4色のカラー画像は像形成体10を小径化す
るために用いた中間転写体14の周面に転写される。こ
の中間転写体14は、電気抵抗108〜1011Ω・c
m、厚さ100〜500μmのウレタンゴム層上に同様
な抵抗値を有するテフロン層を分離用表層として設けた
ベルトから成り、ローラ14A,14B,14C及び1
4Dによって張架されて、ローラ14Aとローラ14B
の間を像形成体10の周面に接触させてカラー画像の被
転写域とし、ローラ14Cと対向する転写ローラ15と
の間を転写紙等の転写材にカラー画像を転写させる転写
域として、ローラ14Dに伝達される動力により像形成
体10の周速度に同期して図1の反時計方向に回動す
る。The three-color or four-color image thus formed on the peripheral surface of the image forming body 10 is transferred onto the peripheral surface of the intermediate transfer body 14 used for reducing the diameter of the image forming body 10. The intermediate transfer member 14 has an electric resistance of 10 8 to 10 11 Ω · c.
The rollers 14A, 14B, 14C and 1 are composed of a urethane rubber layer having a thickness of 100 to 500 μm and a Teflon layer having a similar resistance value provided as a separating surface layer.
The roller 14A and the roller 14B are stretched by 4D.
Between the roller 14C and the transfer roller 15 facing the roller 14C as a transfer area for transferring the color image to a transfer material such as transfer paper. The power transmitted to the roller 14D rotates counterclockwise in FIG. 1 in synchronization with the peripheral speed of the image forming body 10.
【0031】像形成体10の外周面に付着したカラー画
像は、接地したローラ14Aにより像形成体10の外周
面と接触するように案内されて、トナーの帯電と逆極性
の1乃至2kVのバイアス電圧を印加されたローラ14
Bにより像形成体10の外周面から離れるように案内さ
れる被転写域の中間転写体14に、トナーを飛散させる
ことなく効率良く転写され、中間転写体14により転写
域へと運ばれる。The color image adhered to the outer peripheral surface of the image forming body 10 is guided by the grounded roller 14A so as to come into contact with the outer peripheral surface of the image forming body 10, and a bias of 1 to 2 kV having a polarity opposite to that of the toner charging. Roller 14 to which voltage is applied
The toner is efficiently transferred to the intermediate transfer body 14 in the transferred area guided by B to move away from the outer peripheral surface of the image forming body 10, and is carried to the transfer area by the intermediate transfer body 14.
【0032】一方、給紙カセット16の最上部の転写紙
Pが給紙ローラ17により搬出されてタイミングローラ
18に給送され、中間転写体14上のカラー画像の搬送
に同期して転写ローラ15による転写域へと給紙され
る。On the other hand, the uppermost transfer paper P of the paper feed cassette 16 is carried out by the paper feed roller 17 and fed to the timing roller 18, and the transfer roller 15 is synchronized with the conveyance of the color image on the intermediate transfer body 14. It is fed to the transfer area.
【0033】転写ローラ15は、中間転写体14の周速
度に同期して時計方向に回動し、給紙された転写紙Pを
接地状態にあるローラ14Cとの間で中間転写体14に
圧接させると共に、トナーの帯電と逆極性の1乃至2k
Vのバイアス電圧を印加されて、中間転写体14上のカ
ラー画像を転写紙P上に転写させる。The transfer roller 15 rotates clockwise in synchronism with the peripheral speed of the intermediate transfer member 14, and presses the fed transfer paper P against the intermediate transfer member 14 between the roller 14C and the grounded roller 14C. 1 to 2k of the opposite polarity to the charging of the toner
When a bias voltage of V is applied, the color image on the intermediate transfer body 14 is transferred onto the transfer paper P.
【0034】カラー画像を転写された転写紙Pは、除電
針19Aにより除電され、搬送ベルト19を介し定着装
置21に搬送され、熱ローラ21Aと加圧ローラ21B
の間で加熱圧縮を受けてトナーを定着された後、排紙ロ
ーラ22を介して装置外に排出される。The transfer sheet P on which the color image has been transferred is destaticized by the destaticizing needle 19A, is conveyed to the fixing device 21 via the conveying belt 19, and is heated by the heat roller 21A and the pressure roller 21B.
After being heated and compressed to fix the toner, the toner is ejected to the outside of the apparatus through the paper ejection roller 22.
【0035】なお、カラー画像転写後の像形成体10、
中間転写体14並びに転写ローラ15の表面にはそれぞ
れのクリーニング装置100、クリーニング装置140
並びにクリーニング装置150のクリーニングブレード
が常時圧接して残留トナー等の付着汚れの除去を行うか
ら、何れの表面も常に清浄な状態に維持される。クリー
ニング装置100とクリーニング装置140の回収した
トナーは不図示の搬送スクリュー内蔵のトナー搬送管に
よって廃トナー収納容器に収容される。The image forming body 10 after the color image transfer,
The cleaning device 100 and the cleaning device 140 are provided on the surfaces of the intermediate transfer body 14 and the transfer roller 15, respectively.
In addition, since the cleaning blade of the cleaning device 150 constantly presses and removes the adhered dirt such as residual toner, all the surfaces are always kept clean. The toner collected by the cleaning device 100 and the cleaning device 140 is stored in a waste toner storage container by a toner carrying pipe with a built-in carrying screw (not shown).
【0036】以下更に図4乃至図7も参照して本発明の
実施の形態における像形成体と現像器の現像剤層搬送ロ
ーラの駆動機構について説明する。The drive mechanism for the image forming body and the developer layer conveying roller of the developing device in the embodiment of the present invention will be described below with reference to FIGS. 4 to 7.
【0037】図4及び図5のカラー画像形成装置おいて
は、現像器13Y〜13Kの現像スリーブ130は、像
形成体10の略中心部に対する位置を占めるモータ5の
モータ歯車50と係合する分岐減速歯車51及び分岐減
速歯車52にそれぞれ2組づつ係合する減速駆動歯車5
3,54及び減速駆動歯車55,56がそれぞれ現像ス
リーブ130と一体的のスリーブ歯車133、134、
135、136に係合することによって、像形成体10
の外周面側に押される力を受けて回転される。これによ
って各現像スリーブ130は像形成体10に対しがたつ
かずに間隙を正確に保つことができ、そして4組の比較
的短い同じ歯車列によりモータ歯車から同じ円滑な回転
を伝えられるから、カラーバランスのよいカラー画像を
容易に形成できて、装置をコンパクトに安価に構成でき
るようにする。In the color image forming apparatus shown in FIGS. 4 and 5, the developing sleeve 130 of each of the developing devices 13Y to 13K engages with the motor gear 50 of the motor 5 occupying a position relative to the substantially central portion of the image forming body 10. Reduction drive gears 5 engaging with two sets of branch reduction gears 51 and two branch reduction gears 52, respectively.
3, 54 and deceleration drive gears 55 and 56 are sleeve gears 133 and 134, which are integrated with the developing sleeve 130, respectively.
By engaging 135, 136, the imaging member 10
Is rotated by receiving the force pushed to the outer peripheral surface side. This allows each developing sleeve 130 to maintain an accurate gap without rattling with respect to the image forming body 10, and four sets of relatively short same gear trains can transmit the same smooth rotation from the motor gears. A well-balanced color image can be easily formed, and the apparatus can be made compact and inexpensive.
【0038】なお、スリーブ歯車133〜136とそれ
に噛合する減速駆動歯車53〜56は、図1や図4の矢
印方向の回転において、図2に示した係止案内75側に
現像器13Y〜13Kを押す方向の軸方向分力が生ずる
斜歯歯車であることが、現像器13Y〜13Kの位置が
安定するので好ましい。The sleeve gears 133 to 136 and the reduction drive gears 53 to 56 meshing with the sleeve gears 133 to 136 are arranged on the side of the locking guide 75 shown in FIG. A helical gear that produces an axial component force in the pushing direction is preferable because the positions of the developing devices 13Y to 13K are stable.
【0039】また像形成体10を回転させる前述の駆動
歯車62は、像形成体10の周縁部に対する位置即ち中
心部に対する位置よりも外側の位置を占めるモータ6の
モータ歯車60から、減速キャリヤー歯車61によって
駆動される減速駆動歯車である。即ち、像形成体10も
モータ歯車から短い歯車列により円滑な回転を伝えられ
るから、像形成体10が前述のように光学系支持体30
と相対回転可能に係合していることと相俟って、色ずれ
のない鮮明なカラー画像の形成を容易にし、また装置を
コンパクトに安価に構成できるようにする。The above-mentioned drive gear 62 for rotating the image forming body 10 is from the motor gear 60 of the motor 6 occupying a position outside the position with respect to the peripheral portion of the image forming body 10, that is, the position with respect to the central portion, to the reduction carrier gear. 61 is a reduction drive gear driven by 61. That is, since the image forming body 10 can also transmit the smooth rotation from the motor gear by the short gear train, the image forming body 10 can receive the optical system support 30 as described above.
This makes it possible to easily form a clear color image without color shift in combination with the fact that it is relatively rotatably engaged with the device, and to make the device compact and inexpensive.
【0040】なお、ドラム歯車10Gとそれに噛合する
駆動歯車62は、像形成体10を図1や図4の時計方向
に回転させると、ドラム歯車10Gを有する端部歯車環
10Bや軸受が抜け止めに当たる抜け出し防止方向の軸
方向分力が作用する斜歯歯車にしている。それによって
像形成体10の回転位置が安定し、色ずれの発生を防止
できる。また像形成体10を回転させる駆動歯車62の
上述の軸方向分力の方向と各現像スリーブ130を回転
させる減速駆動歯車53〜56の前述の軸方向分力の方
向を、軸受と端部歯車環10B及び光学系支持体30の
ブラケット33の係合構造の選択により、同方向にすれ
ば、像形成体10と現像器13Y〜13Kの関係位置の
一層の安定が得られて一層安定して鮮明なカラー画像を
形成できる。The drum gear 10G and the driving gear 62 meshing with the drum gear 10G prevent the end gear ring 10B having the drum gear 10G and the bearing from coming off when the image forming body 10 is rotated clockwise in FIGS. It is a helical gear that acts on the axial component force in the slip-out prevention direction. As a result, the rotational position of the image forming body 10 is stabilized, and the occurrence of color misregistration can be prevented. The direction of the above-mentioned axial component force of the drive gear 62 that rotates the image forming body 10 and the direction of the above-mentioned axial component force of the reduction drive gears 53 to 56 that rotate each developing sleeve 130 are the bearing and the end gear. If the ring 10B and the bracket 33 of the optical system support 30 are selected in the same direction for the engagement structure, the relative positions of the image forming body 10 and the developing devices 13Y to 13K can be further stabilized, and thus more stable. A clear color image can be formed.
【0041】更に駆動歯車62は、減速キャリヤー歯車
61の軸と回動可能に嵌合して回動範囲を規制される揺
動ブラケット63に軸受け支持されているから、モータ
6を図4の反時計方向に回転させれば揺動ブラケット6
3が時計方向に規制されるまで回動して、ドラム歯車1
0Gと噛合し像形成体10を時計方向に回転させ、モー
タ6を逆転させれば揺動ブラケット63が反時計方向に
規制されるまで回動して、ドラム歯車10Gから外れる
ようになる。その外れた状態で前述のように前面板38
の前側板70への結合を外してユニット3を装置本体外
に取り出すようにできる。図示例の揺動ブラケット63
は、駆動歯車62の軸がモータ6や減速キャリヤー歯車
の軸等を保持する駆動機構ユニット8のユニット枠80
に設けた規制溝80Aと係合していることにより回動範
囲を規制される。Further, since the drive gear 62 is rotatably fitted to the shaft of the reduction carrier gear 61 and is supported by the swing bracket 63 whose rotation range is restricted, the motor 6 is driven in the opposite direction as shown in FIG. Rotate clockwise to swing bracket 6
3 is rotated clockwise until the drum gear 1 is rotated.
When the image forming body 10 is rotated clockwise by meshing with 0G and the motor 6 is rotated in the reverse direction, the swing bracket 63 is rotated counterclockwise until it is disengaged from the drum gear 10G. In the detached state, the front plate 38 as described above.
The unit 3 can be taken out of the main body of the apparatus by disconnecting the unit from the front plate 70. Swing bracket 63 in the illustrated example
Is a unit frame 80 of the drive mechanism unit 8 in which the shaft of the drive gear 62 holds the motor 6, the shaft of the reduction carrier gear, and the like.
The rotation range is regulated by engaging with the regulation groove 80A provided in the.
【0042】更に、上述の像形成体10や現像器13Y
〜13Kの現像スリーブ130の駆動手段を一体的に駆
動機構ユニット8に組み込んで、その駆動機構ユニット
8を装置本体の後側板70の外面側に取り付けているこ
とで、装置の組み立てや分解保守を容易に行うことがで
きる。Further, the image forming body 10 and the developing device 13Y described above are used.
By assembling the driving means for the developing sleeve 130 of up to 13K into the drive mechanism unit 8 integrally and attaching the drive mechanism unit 8 to the outer surface side of the rear side plate 70 of the apparatus main body, the assembly and disassembly maintenance of the apparatus can be performed. It can be done easily.
【0043】図6と図7の例においては、同じ2台のモ
ータ5A,5Bを像形成体10の回転中心に対する位置
の左右に設けて、モータ5Aとモータ5Bでそれぞれ像
形成体10の回転中心を通る垂線XXの左側の現像器1
3Y,13Mの現像スリーブ130と右側の現像器13
C,13Kの現像スリーブ130を回転させるようにし
た点が図4,図5の例と異なるだけである。即ち、図
6,図7の例においても図4,図5の例におけると同様
の効果を得ることができる。In the example of FIGS. 6 and 7, the same two motors 5A and 5B are provided on the left and right of the position with respect to the rotation center of the image forming body 10, and the motor 5A and the motor 5B rotate the image forming body 10 respectively. Developing device 1 on the left side of the vertical line XX passing through the center
3Y, 13M developing sleeve 130 and right developing device 13
The only difference from the examples of FIGS. 4 and 5 is that the C and 13K developing sleeves 130 are rotated. That is, also in the example of FIGS. 6 and 7, the same effect as in the examples of FIGS. 4 and 5 can be obtained.
【0044】本発明のカラー画像形成装置は、以上述べ
た例に限らず、中間転写体を用いず像形成体から直接転
写材にカラー画像を転写するものでも、像形成体や現像
剤層搬送ローラの駆動機構がユニットに一体化されてい
なくても、現像剤層搬送ローラの駆動歯車が現像剤層搬
送ローラを像形成体側に押す力を与えないものでも、像
形成体の駆動歯車が平歯車でもよく、それらにおいても
適当に本発明の効果が得られる。The color image forming apparatus of the present invention is not limited to the above-mentioned examples, but may be one in which a color image is directly transferred from an image forming body to a transfer material without using an intermediate transfer body. Even if the roller drive mechanism is not integrated with the unit, even if the drive gear of the developer layer transport roller does not give the force to push the developer layer transport roller toward the image forming body, the drive gear of the image forming body is flat. Gears may be used, and the effects of the present invention can be appropriately obtained with those gears.
【0045】また、先に触れたように像形成体10のド
ラム歯車10Gを内歯車にすることも容易にでき、同様
の効果が得られることは言うまでもない。Further, as mentioned above, it is needless to say that the drum gear 10G of the image forming body 10 can easily be an internal gear, and the same effect can be obtained.
【0046】[0046]
【発明の効果】本発明のカラー画像形成装置において
は、像形成体と複数の像露光手段の関係位置精度が安定
して正確に保たれ、像形成体と複数の現像器の現像剤層
搬送ローラとが所定の間隙を保って所定の速度で円滑な
回転を行い、従って色ずれのない鮮明なカラー画像を容
易に形成することができ、更には像形成体の交換等の保
守を容易に行うことができて、そのためにも像形成体と
その駆動系の接離が容易に行われるようにでき、組み立
て分解保守が容易でコンパクトに構成されると言う効果
を得ることができる。In the color image forming apparatus of the present invention, the positional accuracy of the relationship between the image forming body and the plurality of image exposing means is stably and accurately maintained, and the image forming body and the developer layer of the plurality of developing devices are conveyed. The roller keeps a predetermined gap and rotates smoothly at a predetermined speed. Therefore, a clear color image without color misregistration can be easily formed, and maintenance such as replacement of the image forming body is facilitated. Therefore, the image forming body and its drive system can be easily brought into and out of contact with each other for that reason, and the effect that the assembling, disassembling and maintenance are easy and the structure is compact can be obtained.
【図1】本発明に係るカラー画像形成装置の例を示す概
要構成断面図である。FIG. 1 is a schematic configuration sectional view showing an example of a color image forming apparatus according to the present invention.
【図2】像形成体等の取り付け構造の例を示す軸方向部
分断面図である。FIG. 2 is an axial partial cross-sectional view showing an example of a mounting structure for an image forming body or the like.
【図3】像形成体等を組み込んだユニット取り付け状態
の部分正面図である。FIG. 3 is a partial front view of a unit attached state in which an image forming body and the like are incorporated.
【図4】像形成体と現像剤層搬送ローラの駆動機構の例
を示す部分図である。FIG. 4 is a partial view showing an example of a drive mechanism for an image forming body and a developer layer conveying roller.
【図5】像形成体と現像剤層搬送ローラの駆動機構ユニ
ットの側面図である。FIG. 5 is a side view of a drive mechanism unit for an image forming body and a developer layer transport roller.
【図6】像形成体と現像剤層搬送ローラの駆動機構の他
の例を示す部分図である。FIG. 6 is a partial view showing another example of the drive mechanism for the image forming body and the developer layer transport roller.
【図7】像形成体と現像剤層搬送ローラの駆動機構ユニ
ットの側面図である。FIG. 7 is a side view of a drive mechanism unit for an image forming body and a developer layer transport roller.
3 ユニット 30 光学系支持体 31 ユニット軸 32、33 ブラケット 34 貼付部材 35 コ字状ブラケット 36 位相ピン 37 先端部ナット 38 前面板 39 押し蓋 5、5A、5B、6 モータ 50、50A、50B、60 モータ歯車 51、52 分岐減速歯車 53〜56 減速駆動歯車 61 減速キャリヤー歯車 62 駆動歯車 63 揺動ブラケット 8 駆動機構ユニット 80 ユニット枠 10 像形成体 10A 端部環 10B 端部歯車環 10G ドラム歯車 11Y〜11K 帯電器 12Y〜12K 像露光手段 13Y〜13K 現像器 130 現像スリーブ 133〜136 スリーブ歯車 14 中間転写体 70 前、後側板 71、73、74 案内支持レール 72 軸受座 75 係止案内 40 接離操作ハンドル 41 偏心溝カム 42 接離作用軸 P 転写紙 3 units 30 Optical system support 31 unit axis 32, 33 bracket 34 Attached member 35 U-shaped bracket 36 Phase Pin 37 Tip nut 38 Front plate 39 Push lid 5, 5A, 5B, 6 motor 50, 50A, 50B, 60 Motor gear 51, 52 Branch reduction gear 53-56 Reduction drive gear 61 reduction carrier gear 62 drive gear 63 swing bracket 8 Drive mechanism unit 80 unit frame 10 Image forming body 10A end ring 10B end gear ring 10G drum gear 11Y-11K charger 12Y-12K image exposure means 13Y-13K developing device 130 developing sleeve 133-136 sleeve gears 14 Intermediate transfer body 70 front and rear side plate 71, 73, 74 Guide support rail 72 Bearing seat 75 Locking guide 40 Handle / separate operation handle 41 Eccentric groove cam 42 Contact and separation action axis P transfer paper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ▲浜▼田 州太 東京都八王子市石川町2970番地コニカ株 式会社内 (72)発明者 三浦 俊英 東京都小金井市緑町5丁目14番14号 (56)参考文献 特開 平7−306579(JP,A) 特開 平5−265262(JP,A) 特開 平6−314001(JP,A) 特開 平8−76545(JP,A) (58)調査した分野(Int.Cl.7,DB名) G03G 15/00 550 G03G 21/16 - 21/18 G03G 15/08 - 15/08 507 G03G 15/01 - 15/01 117 G03G 21/00 350 - 352 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Hama ▼ Shota Ta, 2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica Co., Ltd. (72) Inventor Toshihide Miura 5-14-14 Midori-cho, Koganei-shi, Tokyo ( 56) References JP-A-7-306579 (JP, A) JP-A-5-265262 (JP, A) JP-A-6-314001 (JP, A) JP-A-8-76545 (JP, A) (58) ) Fields surveyed (Int.Cl. 7 , DB name) G03G 15/00 550 G03G 21/16-21/18 G03G 15/08-15/08 507 G03G 15/01-15/01 117 G03G 21/00 350 -352
Claims (2)
電、像露光及び現像を繰り返して複数のトナー像の重ね
合わせから成るカラー画像を外周面に形成するカラー画
像形成装置において、 一端部にドラム歯車を有する前記像形成体が光学系支持
体に配設した複数の像露光手段を内部に収容して装置本
体の側板に固定された前記光学系支持体と相対回転可能
に係合することで装置本体内に設置され、該像形成体の外周面に複数の現像器が現像剤層搬送ロー
ラを接近させて配設されて、 前記像形成体を回転させるモータと回転伝達歯車列及び
前記現像剤層搬送ローラを回転させるモータと回転伝達
歯車列とが前記側板に支持されていると共に、前記ドラ
ム歯車と噛合する駆動歯車及び前記現像器の現像剤層搬
送ローラ歯車と噛合する駆動歯車が斜歯歯車であって、
それら駆動歯車の駆動力の軸方向分力を同方向とし像形
成体と現像器の位置安定に利用する ことを特徴とするカ
ラー画像形成装置。1. A color image forming apparatus for forming a color image on the outer peripheral surface of a rotating drum-shaped image forming body by repeating charging, image exposure and development to form a plurality of toner images on the outer peripheral surface. The image forming body having a drum gear accommodates therein a plurality of image exposing means disposed on the optical system support and engages with the optical system support fixed to the side plate of the apparatus main body so as to be relatively rotatable. This is installed in the main body of the apparatus, and a plurality of developing devices are installed on the outer peripheral surface of the image forming body to convey the developer layer.
And a rotation transmission gear train , which are arranged close to each other and rotate the image forming body.
Motor and rotation transmission for rotating the developer layer conveying roller
The gear train is supported by the side plate, and
Drive gear meshing with the gear and the developer layer carrying of the developing device
The drive gear that meshes with the feed roller gear is a bevel gear,
The axial component of the driving force of these drive gears is set to the same direction and
A color image forming device that is used to stabilize the position of an adult and a developing device.
器の現像剤層搬送ローラに対する回転伝達系とが一体化
されてユニットとして前記側板に支持されていることを
特徴とする請求項1に記載のカラー画像形成装置。 2. A rotation transmission system and development for the image forming body.
Integrated with the rotation transmission system for the developer layer transport roller
Is supported by the side plate as a unit.
The color image forming apparatus according to claim 1, wherein the color image forming apparatus is a color image forming apparatus.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12154896A JP3376539B2 (en) | 1996-05-16 | 1996-05-16 | Color image forming equipment |
US08/854,923 US5930002A (en) | 1996-05-16 | 1997-05-13 | Image forming apparatus having a single-body image forming drum unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12154896A JP3376539B2 (en) | 1996-05-16 | 1996-05-16 | Color image forming equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09304989A JPH09304989A (en) | 1997-11-28 |
JP3376539B2 true JP3376539B2 (en) | 2003-02-10 |
Family
ID=14813981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12154896A Expired - Fee Related JP3376539B2 (en) | 1996-05-16 | 1996-05-16 | Color image forming equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3376539B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3231682B2 (en) | 1997-10-20 | 2001-11-26 | 旭光学工業株式会社 | Printer system |
-
1996
- 1996-05-16 JP JP12154896A patent/JP3376539B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH09304989A (en) | 1997-11-28 |
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