JP2003131493A - Image forming apparatus - Google Patents
Image forming apparatusInfo
- Publication number
- JP2003131493A JP2003131493A JP2001329319A JP2001329319A JP2003131493A JP 2003131493 A JP2003131493 A JP 2003131493A JP 2001329319 A JP2001329319 A JP 2001329319A JP 2001329319 A JP2001329319 A JP 2001329319A JP 2003131493 A JP2003131493 A JP 2003131493A
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- unit
- transfer belt
- holding
- transfer material
- 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.)
- Granted
Links
Landscapes
- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子写真法を用い
る複写機、レーザプリンタ等において感光体上のトナー
像を用紙に転写する転写装置と転写装置を収納する画像
形成装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for transferring a toner image on a photoconductor onto a sheet and an image forming apparatus for accommodating the transfer device in a copying machine, a laser printer or the like using an electrophotographic method.
【０００２】[0002]
【従来の技術】電子写真法を用いるカット紙レーザプリ
ンタや複写機の転写装置では、用紙等の被転写材の搬送
と転写の目的を兼ねて、誘電体ベルトからなる転写材を
用いる方式がある。この転写ベルト方式では、誘電体ベ
ルトの裏面からコロナ放電によって電荷を与えることで
ベルト表面に電荷を誘起させて、この電荷で用紙を吸着
して搬送し、ドラム上に形成された画像を用紙に転写す
る。このため、従来多用されているコロナ放電によって
転写分離するコロトロン転写方式と比較して、用紙をド
ラムに押し付けて、その後、分離する機構が不要となる
ので、簡単な構成で安定して用紙を搬送できるという特
徴がある。更に、ベルトによって、用紙を感光体に密着
させて、転写を行なうので、画質がコロトロン転写方式
よりも優れているばかりではなく、用紙種類に関わら
ず、用紙先端から後端まで均一に印刷できるというメリ
ットがある。2. Description of the Related Art In a transfer device of a cut paper laser printer or a copying machine using an electrophotographic method, there is a method of using a transfer material composed of a dielectric belt for the purpose of conveying and transferring a transfer material such as paper. . In this transfer belt method, an electric charge is applied from the back surface of the dielectric belt by corona discharge to induce an electric charge on the belt surface, and this electric charge attracts and conveys the paper, and the image formed on the drum is transferred to the paper. Transcribe. Therefore, compared to the corotron transfer method that transfers and separates by corona discharge, which is widely used in the past, a mechanism that presses the paper against the drum and then separates it is not required, so the paper can be stably transported with a simple configuration. There is a feature that you can do it. Furthermore, because the paper is transferred to the photoconductor with the belt in close contact, not only is the image quality superior to the corotron transfer method, but it is possible to print evenly from the leading edge to the trailing edge of the paper regardless of the paper type. There are merits.
【０００３】その一方で、転写ベルトは、使用するに伴
い、コロナ放電によって発生するオゾンにさらされるう
え、用紙との摩擦によって、電気抵抗や弾性率が変動
し、劣化する。電気抵抗が大きく変動すると、用紙上に
トナー画像を転写する効率、すなわち転写効率が低下す
るので、画質が劣化する。また、転写ベルトは、両端を
ローラ類によって張力を持たせて、支持し、一方のロー
ラを駆動するので、弾性率が変動すると、移動速度が変
わってしまい、感光体との速度差が顕著になる。この結
果、転写ベルトが劣化した状態では、用紙に転写した画
像の文字ぶれを生じるなどの印刷品質の低下を招くこと
になる。On the other hand, the transfer belt is exposed to ozone generated by corona discharge as it is used, and its electric resistance and elastic modulus fluctuate and deteriorate due to friction with the paper. If the electric resistance fluctuates greatly, the efficiency of transferring the toner image onto the paper, that is, the transfer efficiency is lowered, so that the image quality is deteriorated. Further, the transfer belt drives both rollers by giving tension to both ends by rollers to drive one roller, so that if the elastic modulus changes, the moving speed changes, and the speed difference with the photoconductor becomes remarkable. Become. As a result, when the transfer belt is deteriorated, the print quality is deteriorated, such as blurring of characters in the image transferred onto the paper.
【０００４】[0004]
【発明が解決しようとする課題】プリンタ、複写機で
は、保守を容易にするため、転写ベルトをユニットとし
て構成し、引き出し可能な収納機構にユニットを実装
し、本体から簡単に着脱して、転写ベルト寿命時にユニ
ット毎交換する方式がある。このユニット内部には、前
述したローラ類の他に、コロナ転写器と転写ベルトを感
光体に押し付ける支持ローラ等をはじめとする部品を内
蔵しているが、ユニット交換時には、これらの内蔵部品
も交換することとなる。このため、大量に印刷を行なう
プリンタにおいて、ユニット毎の交換は、装置を維持す
るためのコストすなわち、ランニングコストが増大する
ことになる。また、装置本体にもスライドレールやユニ
ットを収納する収納機構が必要となるため、装置の部品
点数が増え、ランニングコストのみならず、製造コスト
も増大する。In a printer or a copying machine, in order to facilitate maintenance, the transfer belt is configured as a unit, the unit is mounted in a retractable storage mechanism, and the transfer belt is easily detached from the main body to transfer the image. There is a method to replace each unit at the end of belt life. Inside this unit, in addition to the rollers mentioned above, there are built-in parts such as the corona transfer device and the support roller that presses the transfer belt against the photoconductor, but when the unit is replaced, these built-in parts are also replaced. Will be done. For this reason, in a printer that prints a large amount, replacing each unit increases the cost for maintaining the device, that is, the running cost. Further, since the apparatus body also needs a storage mechanism for storing the slide rail and the unit, the number of parts of the apparatus increases, and not only running cost but also manufacturing cost increases.
【０００５】このように、従来の収納機構に転写ユニッ
トを実装する方式は、装置の製造コスト、ランニングコ
ストの面で割高となるので、転写ユニットを本体フレー
ムに直接取り付け、転写ベルトのみを簡単に交換する方
式などもある。前記方式では、転写ユニットは、転写ベ
ルトを保持する転写ベルト保持ユニットとこのユニット
を収納する収納ユニットからなり、転写ベルト交換時に
は、転写ベルト保持ユニットのみを取り外して、転写ベ
ルトの交換を行なうものである。しかしながら、転写ベ
ルト保持ユニットのみを容易に着脱するには、収納装置
が所定の位置に固定されていないと、作業が困難で、転
写ベルト等の部品交換に時間を要することがある。As described above, the conventional method of mounting the transfer unit in the storage mechanism is expensive in terms of the manufacturing cost and running cost of the apparatus. Therefore, the transfer unit is directly attached to the main body frame and only the transfer belt can be easily installed. There is also a method of exchanging. In the above method, the transfer unit is composed of a transfer belt holding unit that holds the transfer belt and a storage unit that stores this unit.When the transfer belt is replaced, only the transfer belt holding unit is removed and the transfer belt is replaced. is there. However, in order to easily attach / detach only the transfer belt holding unit, the work is difficult unless the storage device is fixed at a predetermined position, and it may take time to replace parts such as the transfer belt.
【０００６】そこで、本発明では、転写ユニットを本体
フレームに直接取り付ける方式においても、部品点数を
増やすことなく、容易に転写ベルト保持ユニットを着脱
できるようにするものである。Therefore, in the present invention, even when the transfer unit is directly attached to the main body frame, the transfer belt holding unit can be easily attached and detached without increasing the number of parts.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の転写装置は、転写材を保持する転写材保持
ユニットと転写材保持ユニットを実装する収納ユニット
からなり、収納ユニットには、回転可能なシャフトによ
って収納ユニットと転写材保持ユニットを保持する保持
部材を有しており、転写材交換時には、転写装置の下部
に設けられた湾曲形状を有する規制部材に収納ユニット
を突き当てるとともに、収納ユニットの保持部材を印刷
装置筐体にはめ込むことによって収納ユニットの位置を
規制したことを特徴とするものである。In order to achieve the above object, a transfer device of the present invention comprises a transfer material holding unit for holding a transfer material and a storage unit for mounting the transfer material holding unit. , Which has a holding member for holding the storage unit and the transfer material holding unit by a rotatable shaft, and when the transfer material is exchanged, the storage unit is abutted against a curving regulation member provided in the lower portion of the transfer device. The position of the storage unit is regulated by fitting the holding member of the storage unit into the casing of the printing apparatus.
【０００８】更に、転写材交換後の転写材保持ユニット
を装置に搭載する際、規制部材の湾曲部と筐体の反操作
側に設けられ転写後の用紙を除電する除電器の保持部材
によって、転写材保持ユニットを所定の位置へ案内する
ことを特徴とするものである。Further, when the transfer material holding unit after the transfer material is replaced is mounted on the apparatus, the holding member of the static eliminator, which is provided on the opposite side of the curving portion of the regulating member and on the opposite side of the housing, removes charges of the transferred paper, It is characterized in that the transfer material holding unit is guided to a predetermined position.
【０００９】[0009]
【発明の実施の形態】電子写真法を用いたレーザプリン
タに、本発明を適用した実施例について以下説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a laser printer using an electrophotographic method will be described below.
【００１０】図１において、複写機やプリンタ等で用い
られている有機光導電体（OPC）の場合、感光体１は、
帯電器２のコロナ放電によって表面を−極性に帯電す
る。プリンタで多用されている反転現像方式では、半導
体レーザ等の光学系３によって、潜像が形成され、現像
機４によって感光体１表面の電位と同極性である−極性
トナー５を感光体１上に付着させる。用紙走行部材によ
って搬送された用紙６は、ガイド板７を経て、転写ベル
ト８に至る。転写ベルト８は、両端を駆動ローラ９と従
動ローラ１０によって支持され、駆動ローラ９が回転す
ることによって矢印方向に回転する。転写ベルト内部に
設けられた転写器１１のワイヤ１２には、高圧電源１３
から高電圧が印加されるので、コロナ放電によって、転
写ベルト８表面には、トナー５と逆極性の電荷が発生す
る。搬送された用紙６は、この電荷によってトナー画像
を転写すると同時に用紙６を転写ベルト８に吸着し搬送
する。転写ベルト８によって搬送された用紙６は、駆動
ローラ９に至り、除電器１４によって除電された後、定
着機１５で定着される。一方、転写後の残留した感光体
１上のトナーは、プレチャージ１６、イレーズ１７を経
てクリーナ１８で清掃される。In FIG. 1, in the case of an organic photoconductor (OPC) used in a copying machine or a printer, the photoconductor 1 is
The surface is negatively charged by the corona discharge of the charger 2. In the reversal development method which is often used in printers, a latent image is formed by an optical system 3 such as a semiconductor laser, and a developing device 4 applies a polar toner 5 having the same polarity as the potential of the surface of the photoconductor 1 onto the photoconductor 1. To adhere to. The sheet 6 conveyed by the sheet traveling member reaches the transfer belt 8 via the guide plate 7. Both ends of the transfer belt 8 are supported by a driving roller 9 and a driven roller 10, and the driving roller 9 rotates to rotate in the arrow direction. The wire 12 of the transfer device 11 provided inside the transfer belt is connected to the high voltage power supply 13
Since a high voltage is applied to the surface of the transfer belt 8, a charge having a polarity opposite to that of the toner 5 is generated on the surface of the transfer belt 8. The conveyed sheet 6 transfers the toner image by this electric charge, and at the same time, the sheet 6 is attracted to the transfer belt 8 and conveyed. The sheet 6 conveyed by the transfer belt 8 reaches the drive roller 9, is neutralized by the static eliminator 14, and is then fixed by the fixing device 15. On the other hand, the toner remaining on the photoconductor 1 after the transfer is cleaned by the cleaner 18 after passing through the precharge 16 and the erase 17.
【００１１】前述したように、転写ベルト８は、使用す
るに伴い、電気抵抗や弾性率のような特性値が経時的に
変動するので、定期的に交換する必要がある。本発明で
は、容易に転写ベルト８を交換するために、転写装置１
９は、図２のように、転写ベルト保持ユニット２０と収
納ユニット２１が独立して構成されている。転写ベルト
保持ユニット２０は転写ベルト８、駆動ローラ９、従動
ローラ１０、転写器１１、ベルト蛇行防止ローラ２２、
駆動ローラ保持部材２３等からなる構成部品を両端から
金属板のサイドプレート２４で挟み込む構成としてい
る。収納ユニット２１は金属板フレーム２５、保持部材
２６、連結シャフト２７、転写ベルト保持ユニット押付
部２８、転写器１１に高電圧を供給する高圧給電部２９
や高圧ケーブルや電装品を制御する電装ケーブル等から
構成される。駆動ローラ９は、両端に設けられた軸受保
持部材３０を介して印刷装置筐体の位置決め部（図示
は、省略する）に固定されている。このように、本方式
では、軸受保持部材３０を直接印刷装置筐体に取り付け
ているので、位置関係の精度が得られやすいうえ、大掛
かりな収納機構部が不要であるので、印刷装置の低コス
ト化が可能である。その一方では、収納ユニット２１に
転写ベルト保持ユニット２０を取り付ける際、収納ユニ
ット２１が固定されていないため、作業に時間を要して
いた。As described above, the transfer belt 8 needs to be replaced periodically because characteristic values such as electric resistance and elastic modulus change with time as it is used. In the present invention, in order to easily replace the transfer belt 8, the transfer device 1
9, the transfer belt holding unit 20 and the storage unit 21 are independently configured as shown in FIG. The transfer belt holding unit 20 includes a transfer belt 8, a driving roller 9, a driven roller 10, a transfer device 11, a belt meandering prevention roller 22,
The components such as the drive roller holding member 23 are sandwiched between the side plates 24 of metal plates from both ends. The storage unit 21 includes a metal plate frame 25, a holding member 26, a connecting shaft 27, a transfer belt holding unit pressing portion 28, and a high-voltage power supply portion 29 that supplies a high voltage to the transfer device 11.
And high-voltage cables and electrical equipment cables that control electrical equipment. The drive roller 9 is fixed to a positioning portion (not shown) of the printer housing via bearing holding members 30 provided at both ends. As described above, according to this method, since the bearing holding member 30 is directly attached to the printer casing, the positional relationship can be easily obtained, and a large storage mechanism is not required. Therefore, the cost of the printer can be reduced. Is possible. On the other hand, when the transfer belt holding unit 20 is attached to the storage unit 21, since the storage unit 21 is not fixed, it takes time to perform the work.
【００１２】そこで、本発明では、図２、３、４に示す
方式によって、転写ベルト8交換時に収納ユニット２１
を容易に固定できるようにしている。転写装置１９は、
用紙詰まりの除去や部品交換時に、ハンドル（図示は省
略する）等を操作することによって、所定の位置に下げ
ることが行われる。転写ベルト8交換時には、まず、転
写装置１９を下げた後、駆動ローラ9の操作側に設けら
れている保持カバー３１、転写器１１を取り外す。次に
転写装置１９を操作側に移動させ、両端の軸受保持部材
３０を装置筐体勘合部３２から外し、保持部材２６を固
定している六角ボルト３３を装置筐体３４に設けた穴３
５に勘合させる。転写装置１９の下部には、両面印刷の
際、用紙を搬送する用紙走行機構があり、これらに使用
するセンサ等のケーブルを保護する目的で保護カバー３
６が設けられている。この保護カバー３６にて収納ユニ
ット２１の先端を規制する壁面３７を形成し、さらにそ
の先端部を湾曲させ、転写ベルト保持ユニット１９を着
脱する案内を兼ねるようにした。軸受保持部材３０が装
置筐体３４の勘合部３２から外れると、収納ユニット２
１は、自重によって下がるが、この時、装置筐体の穴３
５に六角ボルト３３が突き当たり、更に収納ユニット２
１の先端部が、壁面３７と突き当たるので、位置が規制
されることになる。Therefore, in the present invention, the storage unit 21 is replaced when the transfer belt 8 is replaced by the method shown in FIGS.
So that it can be easily fixed. The transfer device 19 is
When a paper jam is removed or a part is replaced, a handle (not shown) or the like is operated to lower it to a predetermined position. When replacing the transfer belt 8, first, the transfer device 19 is lowered, and then the holding cover 31 and the transfer device 11 provided on the operating side of the drive roller 9 are removed. Next, the transfer device 19 is moved to the operation side, the bearing holding members 30 at both ends are removed from the device housing fitting portion 32, and the hexagon bolts 33 for fixing the holding member 26 are provided in the device housing 34.
Fit to 5. At the bottom of the transfer device 19, there is a paper traveling mechanism that conveys paper during double-sided printing, and the protective cover 3 is provided for the purpose of protecting cables such as sensors used for these.
6 is provided. The protective cover 36 forms a wall surface 37 that regulates the tip of the storage unit 21, and further bends the tip portion so as to also serve as a guide for attaching and detaching the transfer belt holding unit 19. When the bearing holding member 30 is disengaged from the fitting portion 32 of the device housing 34, the storage unit 2
1 is lowered by its own weight, but at this time, the hole 3 of the apparatus housing is
Hexagon bolt 33 hits 5 and storage unit 2
Since the tip end of No. 1 hits the wall surface 37, the position is regulated.
【００１３】次に収納ユニット２１の保持部材２６を固
定しているネジ３８を外して、操作側の保持部材２６を
時計方向に回転させる。保持部材２６は金属板フレーム
２５を貫通した連結シャフト２７の両端に六角ボルト３
３にて取り付けられ、詳細は、省略するが、操作側の保
持部材２６を回転させることで、それに連動して、反操
作側の保持部材２６も回転させることができる。この
時、操作側の保持部材２６は、装置筐体３２に設けられ
た切欠部３９にはめ込む。これらの操作によって、転写
ベルト保持ユニット２０は、収納ユニット２１から開放
されるが、収納ユニット２１は、六角ボルト３３、保護
カバー壁面３７によって位置が規制される。更に、装置
筐体の切欠部３９に保持部材２６のつまみ４０が挟ま
れ、軸方向のガタを規制するので、収納ユニット２１を
固定できる。なお、保持部材２６は、操作側に移動させ
ないで、回転させようとすると、保持部材２６のつまみ
４０が装置筐体３４と干渉して、回転できないようにな
っている。これは、保持部材２６を回転させた後に、転
写装置１９を操作側に移動した場合、位置関係や移動時
の衝撃によっては、つまみ４０が切欠部３９から外れて
しまうことがあるためである。Next, the screw 38 fixing the holding member 26 of the storage unit 21 is removed, and the holding member 26 on the operating side is rotated clockwise. The holding member 26 has hexagonal bolts 3 at both ends of the connecting shaft 27 that penetrates the metal plate frame 25.
Although the details are omitted, the holding member 26 on the operation side is rotated, and the holding member 26 on the non-operation side can also be rotated in association with the rotation. At this time, the holding member 26 on the operating side is fitted into the cutout portion 39 provided in the device housing 32. By these operations, the transfer belt holding unit 20 is released from the storage unit 21, but the storage unit 21 is restricted in position by the hexagon bolt 33 and the protective cover wall surface 37. Further, since the knob 40 of the holding member 26 is sandwiched between the notches 39 of the apparatus housing to regulate the play in the axial direction, the storage unit 21 can be fixed. If the holding member 26 is to be rotated without being moved to the operating side, the knob 40 of the holding member 26 interferes with the apparatus housing 34 so that it cannot rotate. This is because when the transfer device 19 is moved to the operating side after the holding member 26 is rotated, the knob 40 may be disengaged from the notch 39 depending on the positional relationship and the impact during movement.
【００１４】次に収納ユニット２１から分離された転写
ベルト保持ユニット２０は、平行に移動させ、装置筐体
の勘合部３２から軸受保持部材３０を外した後、保護カ
バー湾曲部４１に沿って取り出す。転写ベルト保持ユニ
ット２０を外した後は、駆動ローラ保持部材２３を固定
しているネジ４２を外し、支点４３を中心に回転させれ
ば、転写ベルト８を弛ませることができるので、容易に
交換できる。Next, the transfer belt holding unit 20 separated from the storage unit 21 is moved in parallel to remove the bearing holding member 30 from the fitting portion 32 of the apparatus housing, and then taken out along the protective cover curved portion 41. . After removing the transfer belt holding unit 20, if the screw 42 fixing the drive roller holding member 23 is removed and the support belt 43 is rotated about the fulcrum 43, the transfer belt 8 can be loosened, so that it can be easily replaced. it can.
【００１５】一方、転写ベルト8を交換した後は、図５
のように保護カバー湾曲部４１に沿って、転写ベルト保
持ユニット２８を反操作側に押し込む。次に、反操作側
の装置筐体に取り付けられた除電器保持部材４４のガイ
ド４５に反操作側の軸受保持部材３０をはめ込んだ後、
ガイド４５に沿って、平行に移動する。除電器保持部材
４４は、転写後の用紙を除電する目的で設置された除電
器１４を位置決めするためのものであるが、先端部を伸
ばして、転写ベルト保持ユニット２０を取り付ける際の
案内を兼ねるようにしたものである。転写ベルト保持ユ
ニット２８の反操作側を平行に移動すると操作側は、図
６のように、装置筐体のU字型をした開口部４６に軸受
保持部材３０のテーパ部が勘合するようになっている。On the other hand, after the transfer belt 8 is exchanged, as shown in FIG.
As described above, the transfer belt holding unit 28 is pushed toward the counter operation side along the protective cover curved portion 41. Next, after fitting the bearing holding member 30 on the non-operating side into the guide 45 of the static eliminator holding member 44 attached to the device casing on the non-operating side,
It moves in parallel along the guide 45. The static eliminator holding member 44 is for positioning the static eliminator 14 installed for the purpose of static erasing the sheet after transfer, and also serves as a guide when the tip end portion is extended and the transfer belt holding unit 20 is attached. It was done like this. When the non-operating side of the transfer belt holding unit 28 is moved in parallel, the operating side comes to fit the tapered portion of the bearing holding member 30 into the U-shaped opening 46 of the apparatus housing as shown in FIG. ing.
【００１６】次に駆動ローラ保持部材２３を収納ユニッ
ト開口部４７にはめ込む。収納ユニット２１は、保持部
材２６と装置筐体３４によって固定されており、収納ユ
ニット２１の開口部４７にはめ込む駆動ローラ保持部材
２３には、面取りが施されているので、容易に取り付け
ることができる。この時、装置筐体３４には、角部に転
写ベルトが接触して傷が付かないように、保護ローラ４
８が設けられている。取り付け後は、保持部材２６を反
時計方向に回転させ、転写ベルト保持ユニット２０を固
定した後、ネジ止めする。その後は、転写装置１９を反
操作方向に押し込むことによって、装置筐体に取り付け
ることができる。Next, the drive roller holding member 23 is fitted into the storage unit opening 47. The storage unit 21 is fixed by the holding member 26 and the device housing 34, and the drive roller holding member 23 fitted into the opening 47 of the storage unit 21 is chamfered, so that it can be easily attached. . At this time, the protective roller 4 is attached to the device casing 34 so that the transfer belt does not come into contact with the corners and are not scratched.
8 are provided. After the attachment, the holding member 26 is rotated counterclockwise to fix the transfer belt holding unit 20, and then screwed. After that, the transfer device 19 can be attached to the apparatus housing by pushing in the opposite direction.
【００１７】本発明の効果を検証したところ、従来の方
式に比べ、転写ベルトの交換作業時間を約１／３とする
ことができた。When the effect of the present invention was verified, it was possible to reduce the transfer belt replacement work time to about 1/3 of that of the conventional method.
【００１８】[0018]
【発明の効果】以上のように、本発明によれば、装置の
構成を複雑にすることなく、容易に転写ベルト保持ユニ
ットを交換することができる。As described above, according to the present invention, the transfer belt holding unit can be easily replaced without complicating the structure of the apparatus.
【図面の簡単な説明】[Brief description of drawings]
【図１】 本発明の一実施例である画像形成装置の模式
図である。FIG. 1 is a schematic diagram of an image forming apparatus that is an embodiment of the present invention.
【図２】 本発明の一実施例である転写装置の模式図で
ある。FIG. 2 is a schematic diagram of a transfer device that is an embodiment of the present invention.
【図３】 転写装置の着脱機構を説明する模式図であ
る。FIG. 3 is a schematic diagram illustrating an attachment / detachment mechanism of a transfer device.
【図４】 転写装置の着脱機構を説明する模式図であ
る。FIG. 4 is a schematic diagram illustrating an attachment / detachment mechanism of a transfer device.
【図５】 転写装置の取り付け機構を説明する模式図で
ある。FIG. 5 is a schematic diagram illustrating a mounting mechanism of a transfer device.
【図６】 転写装置の取り付け機構を説明する模式図で
ある。FIG. 6 is a schematic diagram illustrating a mounting mechanism of a transfer device.
１…感光体、２…帯電器、３…光学系、４…現像機、５
…トナー、６…用紙、７…ガイド板、８…転写ベルト、
９…駆動ローラ、１０…従動ローラ、１１…転写器、１
２…ワイヤ、１３…高圧電源、１４…除電器、１５…定
着機、１６…プレチャージ、１７…イレーズ、１８…ク
リーナ、１９…転写装置、２０…転写ベルト保持ユニッ
ト、２１…収納ユニット、２２…ベルト蛇行防止ロー
ラ、２３…駆動ローラ保持部材、２４…金属板のサイド
プレート、２５…金属板フレーム、２６…保持部材、２
７…連結シャフト、２８…転写ベルト保持ユニット押付
部、２９…高圧給電部、３０…軸受保持部材、３１…保
持カバー、３２…勘合部、３３…六角ボルト、３４…装
置筐体、３５…穴、３６…保護カバー、３７…壁面、３
８…ネジ、３９…切欠部、４０…つまみ、４１…保護カ
バー湾曲部、４２…ネジ、４３…支点、４４…除電器保
持部材、４５…ガイド、４６…開口部、４７…収納ユニ
ット開口部、４８…保護ローラ。1 ... Photosensitive member, 2 ... Charging device, 3 ... Optical system, 4 ... Developing device, 5
... toner, 6 ... paper, 7 ... guide plate, 8 ... transfer belt,
9 ... drive roller, 10 ... driven roller, 11 ... transfer device, 1
2 ... Wire, 13 ... High-voltage power supply, 14 ... Static eliminator, 15 ... Fixing device, 16 ... Precharge, 17 ... Erase, 18 ... Cleaner, 19 ... Transfer device, 20 ... Transfer belt holding unit, 21 ... Storage unit, 22 ... belt meandering prevention roller, 23 ... drive roller holding member, 24 ... metal plate side plate, 25 ... metal plate frame, 26 ... holding member, 2
7 ... Connection shaft, 28 ... Transfer belt holding unit pressing portion, 29 ... High voltage power feeding portion, 30 ... Bearing holding member, 31 ... Holding cover, 32 ... Fitting portion, 33 ... Hexagon bolt, 34 ... Device housing, 35 ... Hole , 36 ... Protective cover, 37 ... Wall surface, 3
8 ... Screw, 39 ... Notch, 40 ... Knob, 41 ... Protective cover curved part, 42 ... Screw, 43 ... Support point, 44 ... Static eliminator holding member, 45 ... Guide, 46 ... Opening part, 47 ... Storage unit opening part , 48 ... Protective roller.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三輪 正人 茨城県ひたちなか市武田1060番地 日立工 機株式会社内 (72)発明者 西野 修 茨城県ひたちなか市武田1060番地 日立工 機株式会社内 Ｆターム(参考） 2H071 BA03 BA13 BA14 BA16 BA29 DA09 DA23 EA04 EA06 2H200 FA12 FA13 GA16 GA23 GA34 GA49 GB02 GB13 GB21 HA12 HB03 JA02 JB06 JB16 JB20 LA03 LA08 LA38 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masato Miwa Hitachiko, 1060 Takeda, Hitachinaka City, Ibaraki Prefecture Machine Co., Ltd. (72) Inventor Osamu Nishino Hitachiko, 1060 Takeda, Hitachinaka City, Ibaraki Prefecture Machine Co., Ltd. F-term (reference) 2H071 BA03 BA13 BA14 BA16 BA29 DA09 DA23 EA04 EA06 2H200 FA12 FA13 GA16 GA23 GA34 GA49 GB02 GB13 GB21 HA12 HB03 JA02 JB06 JB16 JB20 LA03 LA08 LA38
Claims (2)
に転写する転写器と被転写材を吸着搬送し像担持体上に
形成したトナー像を転写搬送する転写材を有する転写装
置と、転写装置を収納する筐体を設けた画像形成装置に
おいて、転写材を保持する転写材保持ユニットと転写材
保持ユニットを保持する回転可能な保持部材を有する収
納ユニットとからなる転写装置と、収納ユニットを規制
する湾曲形状の規制部材を設けたことを特徴とする画像
形成装置。1. A transfer device having a transfer device for transferring a toner image adhering to an image carrier onto a transfer material, and a transfer material for adsorbing and transporting the transfer material and transferring and transporting the toner image formed on the image carrier. An image forming apparatus having a housing for accommodating a transfer device, the transfer device comprising a transfer material holding unit for holding the transfer material and a storage unit having a rotatable holding member for holding the transfer material holding unit; An image forming apparatus comprising a curvilinear restricting member for restricting a unit.
像形成装置に搭載する際、規制部材の湾曲部と筐体の反
操作側に設けられ転写後の用紙を除電する除電器の保持
部材によって、転写材保持ユニットを所定の位置へ案内
することを特徴とする請求項1記載の画像形成装置。2. A holding member for a static eliminator, which is provided on the curved portion of the regulating member and on the side opposite to the operating side of the housing when the transfer material holding unit after the transfer of the transfer material is mounted on the image forming apparatus, for removing the charge of the transferred paper. 2. The image forming apparatus according to claim 1, wherein the transfer material holding unit is guided to a predetermined position by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001329319A JP4016246B2 (en) | 2001-10-26 | 2001-10-26 | Image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001329319A JP4016246B2 (en) | 2001-10-26 | 2001-10-26 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003131493A true JP2003131493A (en) | 2003-05-09 |
| JP4016246B2 JP4016246B2 (en) | 2007-12-05 |
Family
ID=19145240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001329319A Expired - Fee Related JP4016246B2 (en) | 2001-10-26 | 2001-10-26 | Image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4016246B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010156998A (en) * | 2010-04-12 | 2010-07-15 | Oki Data Corp | Belt unit and image forming apparatus |
| US8146734B2 (en) | 2007-09-21 | 2012-04-03 | Oki Data Corporation | Belt unit and image forming apparatus |
-
2001
- 2001-10-26 JP JP2001329319A patent/JP4016246B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8146734B2 (en) | 2007-09-21 | 2012-04-03 | Oki Data Corporation | Belt unit and image forming apparatus |
| JP2010156998A (en) * | 2010-04-12 | 2010-07-15 | Oki Data Corp | Belt unit and image forming apparatus |
| JP4639264B2 (en) * | 2010-04-12 | 2011-02-23 | 株式会社沖データ | Belt unit and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4016246B2 (en) | 2007-12-05 |
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