JP2001117303A - Electrophotographic device - Google Patents
Electrophotographic deviceInfo
- Publication number
- JP2001117303A JP2001117303A JP29341099A JP29341099A JP2001117303A JP 2001117303 A JP2001117303 A JP 2001117303A JP 29341099 A JP29341099 A JP 29341099A JP 29341099 A JP29341099 A JP 29341099A JP 2001117303 A JP2001117303 A JP 2001117303A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- unit
- closing unit
- electrophotographic apparatus
- closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子写真技術を用
いた電子写真装置、例えば複写機，プリンタ，印刷機，
Fax に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus using electrophotographic technology, for example, a copying machine, a printer, a printing machine,
Fax.
【０００２】[0002]
【従来の技術】電子写真技術を用いた電子写真装置で
は、紙ジャム処理，消耗品交換などのために扉を開く必
要性がある。また、電子写真装置の小型化を図るために
現像，転写，排紙等の工程を行うユニットを本体の扉と
共用する必要性がある。そのため、各扉は開閉式のユニ
ットとなり、その固定方法としては蝶番でユニットと本
体を固定する方法やユニットに設けた軸を本体に取り付
けた軸受で受ける方法がある。2. Description of the Related Art In an electrophotographic apparatus using electrophotographic technology, it is necessary to open a door for paper jam processing, replacement of consumables, and the like. In addition, in order to reduce the size of the electrophotographic apparatus, it is necessary to share a unit for performing processes such as development, transfer, and discharge with a door of the main body. Therefore, each door is an openable and closable unit, and as a fixing method, there are a method of fixing the unit and the main body with a hinge, and a method of receiving a shaft provided on the unit with a bearing attached to the main body.
【０００３】[0003]
【発明が解決しようとする課題】電子写真装置の扉を開
閉式ユニットと共用にした場合、ユニットには各種ロー
ラやカム回転用の軸などの部品により重量が増し、大き
な用紙まで対応したプリンタの場合用紙幅にあわせて各
ユニット幅が広くなり、開閉式ユニットの取り付け作業
性が悪くなる。その上、扉を開閉式ユニットと共用する
ことで、扉上の構成部品が多くなるため固定軸周辺の空
間が制限され、蝶番や軸を追加部品固定で押さえる方法
では、蝶番や追加固定部品を固定するために必要な空間
が限られ組立作業性が悪くなる。また、追加部品によっ
て部品数の増加といった課題がある。When the door of the electrophotographic apparatus is used in common with the opening / closing unit, the weight of the unit is increased by parts such as various rollers and a shaft for rotating the cam, and the printer is designed to handle large paper. In this case, the width of each unit is increased in accordance with the paper width, and the workability of mounting the opening / closing unit is deteriorated. In addition, sharing the door with the open / close unit increases the number of components on the door, limiting the space around the fixed shaft.In the method of holding the hinge and shaft with additional components, the hinge and additional fixed The space required for fixing is limited, and the assembling workability deteriorates. In addition, there is a problem that the number of components increases due to additional components.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記課題を解
決するために考案されたものであり、開閉式ユニットを
有する電子写真装置において、開閉式ユニットの固定軸
受部にＵ字形状の溝を設け、その溝に開閉式ユニットの
固定軸を差し込むことによって固定を行う。この軸の形
状を片面または両面Ｄカットとし、Ｕ字形状溝幅を軸受
部の直径より小さくし、ユニット取り付け時はＤカット
面とＵ字形状溝の方向を一致させ、プリンタ本体とユニ
ットとの間を固定バンドでつなぎ、ユニットの開閉角度
を規制する。これによって、ユニット取り付けは固定軸
受部溝に差し込んで、本体とユニットの間を固定バンド
で固定するだけで済み、ネジ止めや追加部品の固定作業
の追加が不要となり、ユニットの交換作業性や部品数の
削減につながる。また、ユニット固定軸挿入後の軸の固
定を確実に行うために弾性体を固定軸受部に固定し、軸
受部Ｕ字溝の奥へ固定軸を押し付け、軸と軸受間のガタ
を減らし、ユニットの取り付け精度を向上できる。SUMMARY OF THE INVENTION The present invention has been devised in order to solve the above-mentioned problems. In an electrophotographic apparatus having an opening / closing unit, a U-shaped groove is formed in a fixed bearing portion of the opening / closing unit. And fixing is performed by inserting the fixed shaft of the opening / closing unit into the groove. The shape of this shaft is one-sided or two-sided D-cut, the U-shaped groove width is smaller than the diameter of the bearing part, and when the unit is mounted, the direction of the D-cut surface and the U-shaped groove coincide with each other. A fixed band is connected between them to regulate the opening / closing angle of the unit. As a result, the unit only needs to be inserted into the fixed bearing groove and fixed between the main unit and the unit with a fixing band, eliminating the need for screwing and additional work for fixing additional parts, making unit replacement work and parts This leads to a reduction in the number. Also, in order to securely fix the shaft after the unit fixed shaft is inserted, the elastic body is fixed to the fixed bearing portion, the fixed shaft is pressed into the back of the U-shaped groove of the bearing portion, and the play between the shaft and the bearing is reduced, Mounting accuracy can be improved.
【０００５】[0005]
【発明の実施の形態】以下、本発明の一実施例に関わる
電子写真装置を、図を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electrophotographic apparatus according to an embodiment of the present invention will be described with reference to the drawings.
【０００６】図１に、本発明の一実施例に関わる電子写
真装置であるカラー電子写真プリンタの断面図を示す。
プリンタ本体１の後面には開閉式ユニット２に配置され
た固定軸３がプリンタ本体１に配置された軸受部４に取
り付けられる。開閉式ユニット２はプリンタ本体１と固
定バンド５を用いて固定され、開閉角度が規定されてい
る。また、本プリンタには中間転写ドラム６を設けてい
る。FIG. 1 is a sectional view of a color electrophotographic printer which is an electrophotographic apparatus according to one embodiment of the present invention.
On the rear surface of the printer main body 1, a fixed shaft 3 arranged in the opening / closing unit 2 is attached to a bearing 4 arranged in the printer main body 1. The opening / closing unit 2 is fixed to the printer main body 1 using a fixing band 5, and an opening / closing angle is defined. The printer is provided with an intermediate transfer drum 6.
【０００７】図２に開閉式ユニット固定軸部の詳細を示
す。固定軸３は図２（ａ）のように片面Ｄカットまたは
図２（ｂ）のように両面Ｄカット形状をしており、軸受
部４のＵ字溝幅Ｗを軸径Ｒより小さくすることにより、
開閉式ユニット取り付け時には開閉式ユニットをＡ方向
に挿入し、固定軸のＤカット面７が軸受部Ｕ字溝を通り
軸回転部８まで入り、開閉式ユニット２を回転させるこ
とにより軸受部４のＵ字溝から固定軸３が外れないよう
にしている。FIG. 2 shows details of the openable unit fixed shaft. The fixed shaft 3 has a single-sided D-cut shape as shown in FIG. 2A or a double-sided D-cut shape as shown in FIG. 2B, and the U-shaped groove width W of the bearing portion 4 is smaller than the shaft diameter R. By
When the opening / closing unit is mounted, the opening / closing unit is inserted in the direction A, and the D-cut surface 7 of the fixed shaft passes through the U-shaped groove of the bearing portion to the shaft rotating portion 8. The fixed shaft 3 is prevented from coming off the U-shaped groove.
【０００８】図３に固定軸３を押さえる板ばね９の実施
例を示す。固定軸３を軸受部４の軸回転部７まで確実に
入った状態で開閉式ユニットが回転するように板ばね８
を軸受部４に固定し、固定軸３を押さえる。この板ばね
９の角度をａ＜ｂとすることにより、固定軸３を取り付
ける力より取り外すのに必要な力が大きくなるようにす
る。このことにより、固定軸３の取り付けが容易で、固
定を確実にし、固定軸３と軸受部４とのガタを押さえて
開閉式ユニット２の本体取り付け精度が向上される。FIG. 3 shows an embodiment of the leaf spring 9 for holding the fixed shaft 3. A leaf spring 8 is provided so that the opening / closing unit rotates with the fixed shaft 3 securely inserted into the shaft rotating unit 7 of the bearing unit 4.
Is fixed to the bearing portion 4 and the fixed shaft 3 is pressed. By setting the angle of the leaf spring 9 to a <b, the force required for detaching the fixed shaft 3 is larger than the force for attaching the fixed shaft 3. Thereby, the fixed shaft 3 can be easily mounted, the fixing is ensured, the play between the fixed shaft 3 and the bearing 4 is suppressed, and the mounting accuracy of the main body of the opening / closing unit 2 is improved.
【０００９】図４に中間転写ドラムに重りを追加した実
施例を示す。中間転写ドラム６のリブ内側に重り１０を
配置し、中間転写ドラム６の慣性モーメントをＵＰする
ことで中間転写ドラム６の回転を安定させ外乱振動によ
る画像不良を防止することができる。FIG. 4 shows an embodiment in which a weight is added to the intermediate transfer drum. By arranging the weight 10 inside the rib of the intermediate transfer drum 6 and increasing the moment of inertia of the intermediate transfer drum 6, the rotation of the intermediate transfer drum 6 can be stabilized, and an image defect due to disturbance vibration can be prevented.
【００１０】[0010]
【発明の効果】本発明によれば、電子写真装置の開閉式
ユニットの交換が容易になり、組立作業性，メンテナン
ス性が向上し、部品数の削減に寄与する。According to the present invention, the exchangeable unit of the electrophotographic apparatus can be easily exchanged, the workability of assembly and the maintainability are improved, and the number of parts is reduced.
【図１】本発明の電子写真装置の構造図。FIG. 1 is a structural view of an electrophotographic apparatus of the present invention.
【図２】本発明の一実施例である開閉式ユニットの固定
軸と軸受部の構造図。FIG. 2 is a structural view of a fixed shaft and a bearing portion of the opening / closing unit according to one embodiment of the present invention.
【図３】本発明の一実施例である開閉式ユニットの軸受
部と軸固定板ばねの構造図。FIG. 3 is a structural diagram of a bearing portion and a shaft fixing leaf spring of the opening / closing unit according to one embodiment of the present invention.
【図４】本発明の一実施例である中間転写ドラムと重り
の構造図。FIG. 4 is a structural diagram of an intermediate transfer drum and a weight according to an embodiment of the present invention.
１…プリンタ本体、２…開閉式ユニット、３…固定軸、
４…軸受部、５…固定バンド、６…中間転写ドラム、７
…固定軸Ｄカット面、８…軸回転部、９…板ばね、１０
…重り。DESCRIPTION OF SYMBOLS 1 ... Printer body, 2 ... Open-close type unit, 3 ... Fixed axis,
4 ... Bearing part, 5 ... Fixed band, 6 ... Intermediate transfer drum, 7
... fixed shaft D cut surface, 8 ... shaft rotating part, 9 ... leaf spring, 10
…weight.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H032 BA08 BA23 2H071 AA03 AA18 AA19 AA20 AA38 AA39 DA09 4E360 AB12 EC04 EC05 EC12 ED04 ED23 ED28 GA04 GA07 GA08 GA47 GA53 GB48 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H032 BA08 BA23 2H071 AA03 AA18 AA19 AA20 AA38 AA39 DA09 4E360 AB12 EC04 EC05 EC12 ED04 ED23 ED28 GA04 GA07 GA08 GA47 GA53 GB48
Claims (5)
いて、開閉式ユニット固定軸部が両面または片面Ｄカッ
ト形状であり、そのユニット固定軸受部が水平方向を向
いたＵ字形状を有し、そのＵ字入口部幅が前記開閉式ユ
ニット固定軸直径より小さいことを特徴とする電子写真
装置。1. An electrophotographic apparatus having an openable / closed unit, wherein the openable / closed unit fixed shaft has a double-sided or single-sided D-cut shape, and the unit fixed bearing has a horizontal U-shape. An electrophotographic apparatus, wherein a width of a U-shaped entrance portion is smaller than a diameter of the opening / closing unit fixed shaft.
いて、前記開閉式ユニットの開閉時に前記ユニット固定
軸受部溝方向と前記ユニット固定軸受Ｄカット方向が一
致しないように規定する固定バンドを前記電子写真装置
と前記開閉式ユニットとの間に有することを特徴とする
電子写真装置。2. An electrophotographic apparatus having an opening / closing unit, wherein said fixing band for defining said unit fixing bearing groove direction and said unit fixing bearing D-cut direction not to coincide with each other when said opening / closing unit is opened and closed. An electrophotographic apparatus, which is provided between the apparatus and the opening / closing unit.
いて、前記開閉式ユニット固定軸受部に前記開閉式ユニ
ット固定軸を押さえる弾性体が固定されることを特徴と
する電子写真装置。3. An electrophotographic apparatus having an opening / closing unit, wherein an elastic body for holding said opening / closing unit fixed shaft is fixed to said opening / closing unit fixed bearing.
いて、前記開閉式ユニット固定軸受部に固定された弾性
体がＬ字形状の板ばねで構成され、前記開閉式ユニット
固定軸と接触する板ばねの水平方向の角度が前記開閉式
ユニット挿入時に接触する側より取り外し時の方が大き
いことを特徴とする電子写真装置。4. An electrophotographic apparatus having an opening / closing unit, wherein the elastic body fixed to the opening / closing unit fixed bearing is constituted by an L-shaped leaf spring, and the leaf spring contacts the opening / closing unit fixed shaft. An electrophotographic apparatus characterized in that the horizontal angle is larger at the time of removal than at the side contacting when the openable unit is inserted.
前記中間転写ドラム内側に重りを追加することを特徴と
する電子写真装置。5. An electrophotographic apparatus according to claim 1, further comprising an intermediate transfer drum, wherein a weight is added inside said intermediate transfer drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29341099A JP2001117303A (en) | 1999-10-15 | 1999-10-15 | Electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29341099A JP2001117303A (en) | 1999-10-15 | 1999-10-15 | Electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001117303A true JP2001117303A (en) | 2001-04-27 |
Family
ID=17794422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29341099A Pending JP2001117303A (en) | 1999-10-15 | 1999-10-15 | Electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001117303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032836A (en) * | 2006-07-26 | 2008-02-14 | Brother Ind Ltd | Image forming apparatus |
-
1999
- 1999-10-15 JP JP29341099A patent/JP2001117303A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032836A (en) * | 2006-07-26 | 2008-02-14 | Brother Ind Ltd | Image forming apparatus |
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