JPH0362069A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0362069A JPH0362069A JP1198532A JP19853289A JPH0362069A JP H0362069 A JPH0362069 A JP H0362069A JP 1198532 A JP1198532 A JP 1198532A JP 19853289 A JP19853289 A JP 19853289A JP H0362069 A JPH0362069 A JP H0362069A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developing device
- toner hopper
- lever shaft
- hopper
- 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
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は画像形成装置に関し、特に現像装置を画像形成
装置本体内部に着脱する際にトナーの飛散を防止するこ
とができる画像形成装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an image forming apparatus, and particularly to an image forming apparatus that can prevent toner from scattering when a developing device is installed and removed inside the image forming apparatus main body. It is.
（従来技術）
一般に、画像形成装置本体内部に現像装置が着脱自在な
画像形成装置としては、上方のトナーホッパーから下方
の現像装置へトナーを供給するトナー供給部が、上記現
像装置を画像形成装置本体から着脱する際に摺動するよ
うにしたものがある。(Prior Art) Generally, in an image forming apparatus in which a developing device is detachably installed inside the main body of the image forming apparatus, a toner supply section that supplies toner from an upper toner hopper to a lower developing device is used to connect the developing device to the image forming apparatus. Some devices are designed to slide when attached to or removed from the main body.
ところが、この画像形成装置によれば、摺動させて着脱
させるために、高い位置精度を必要としコスト高となる
、あるいは現像装置を着脱する際の作業者の負担を軽減
するために摺動部を小さくすると、トナーの供給経路が
複雑になる等の問題点があった。However, according to this image forming apparatus, since the developing device is attached and detached by sliding, high positional accuracy is required, resulting in high cost, or the sliding part is installed to reduce the burden on the operator when attaching and detaching the developing device. If the size of the toner is made smaller, there are problems such as a complicated toner supply route.
そこで、先に、本発明者は、実願昭６３−１４１４３０
号において、第２図に示す画像形成装置を提案した。こ
の画像形成装置は、現像装置■１と該現像装置１１の上
方に配設され現像装置１１にトナーを補給するためのト
ナー補給口１３．１−ナー補給口１３を開閉するための
シャッタ■４およびシャッタ１４を動作させてトナー補
給口１３を開閉するための開閉機構１５を備えるトナー
ホッパー１２と該トナーホッパー１２を現像装置１１に
対して昇降させるために装置本体内部に回動自在に配設
されるレバー軸１６とを有するものである。そして、前
記現像装置１１をその現像ローラ軸芯方向に摺動させて
画像形成装置本体内部に着脱する際、前記レバー軸工６
を回動させることにより前記トナーホッパー１２を現像
装置１１に対して上下方向へ昇降する。この時、トナー
ホンパー１２の下面部が現像装置１１の上面部から離間
することにより開閉機構１５がシャッタ１４を動作させ
てトナー補給口１３を開開する。一方、トナーホッパー
１２を現像装置１１に接続する際には、トナーホッパー
１２の下面部が現像装置１２の上面部に当接することに
よりシャッタ１４が動作しトナー補給口１５を開放させ
る。図中の破線はトナーホッパー１２が現像装置１１に
対して上昇した状態を示したものである。Therefore, first, the inventor of the present invention applied for U.S. Pat.
In this issue, we proposed the image forming apparatus shown in FIG. This image forming apparatus includes a developing device (1), a toner replenishing port (13.1) disposed above the developing device (11) for replenishing toner to the developing device (11), and a shutter (4) for opening and closing the toner replenishing port (13). and a toner hopper 12 equipped with an opening/closing mechanism 15 for operating the shutter 14 to open and close the toner replenishment port 13; and a toner hopper 12 rotatably disposed inside the apparatus main body for raising and lowering the toner hopper 12 with respect to the developing device 11. It has a lever shaft 16. When the developing device 11 is slid in the axial direction of the developing roller and is attached or detached from the inside of the image forming apparatus main body, the lever shaft work 6
By rotating the toner hopper 12, the toner hopper 12 is raised and lowered relative to the developing device 11 in the vertical direction. At this time, as the lower surface of the toner pumper 12 separates from the upper surface of the developing device 11, the opening/closing mechanism 15 operates the shutter 14 to open and open the toner supply port 13. On the other hand, when the toner hopper 12 is connected to the developing device 11, the lower surface of the toner hopper 12 comes into contact with the upper surface of the developing device 12, thereby operating the shutter 14 and opening the toner supply port 15. The broken line in the figure shows the state in which the toner hopper 12 is raised relative to the developing device 11.
（発明が解決しようとする問題点）
ところが、上記した画像形成装置によれば、トナーホッ
パー１２の下降の際にレバー軸１６をトナーホッパー１
２と現像装置１１が接続する所定位置まで回転させてい
るにも係わらず、例えば、ガタつき等によりトナーホッ
パー１２の下面部が現像装置１１の上面部と完全に当接
しない場合がある。この結果、シャッタ１４の開閉機構
１５が正常に動作せずにトナー補給口１３がシャッタ１
４により閉じたままとなることがあった。このため、ト
ナーホッパー１２から現像装置１１にトナであり、トナ
ーホッパーが現像装置に対して上下方向に昇降した際に
、トナーホッパーのトナー補給口を確実且つ完全に開開
することができる画像形成装置を提供するものである。(Problems to be Solved by the Invention) However, according to the image forming apparatus described above, when the toner hopper 12 is lowered, the lever shaft 16 is
Even though the toner hopper 12 is rotated to a predetermined position where the toner hopper 12 and the developing device 11 are connected, the lower surface of the toner hopper 12 may not completely contact the upper surface of the developing device 11 due to, for example, rattling. As a result, the opening/closing mechanism 15 of the shutter 14 does not operate normally and the toner replenishment port 13 closes to the shutter 1.
4, it sometimes remained closed. Therefore, when the toner is transferred from the toner hopper 12 to the developing device 11 and the toner hopper moves up and down with respect to the developing device, the toner replenishing port of the toner hopper can be reliably and completely opened to form an image. It provides equipment.
（問題点を解決するための手段）
本発明の画像形成装置は、現像装置と該現像装置の上方
に配設され現像装置にトナーを補給するためのトナー補
給口を有するトナーホッパーと装置本体内部に回動可能
に配設され前記トナーホッパーを現像装置に対して昇降
させるためのレバー軸とを有し、前記現像装置をその現
像ローラ軸芯方向に摺動させて画像形成装置本体内部に
脱着する際、前記レバー軸を回動させて前記トナーホッ
パーを現像装置に対して上下方向へ昇降する画像形成装
置において、前記トナーホッパーのトナー補給口近傍に
、該トナー補給口を開閉するシャッタを設け、該シャッ
タを前記レバー軸の回動動作に連動させて閉し又は開け
るようにしたものである。(Means for Solving the Problems) The image forming apparatus of the present invention includes a developing device, a toner hopper disposed above the developing device and having a toner supply port for replenishing toner to the developing device, and an inside of the device main body. and a lever shaft rotatably disposed to raise and lower the toner hopper with respect to the developing device, and the developing device is slid in the axial direction of the developing roller to be detached from the inside of the main body of the image forming apparatus. In an image forming apparatus in which the toner hopper is raised and lowered in a vertical direction with respect to a developing device by rotating the lever shaft, a shutter for opening and closing the toner replenishment port is provided near the toner replenishment port of the toner hopper. , the shutter is closed or opened in conjunction with the rotational movement of the lever shaft.
（作用）
本発明の画像形成装置によれば、現像装置を装置本体か
ら取り外す際にレバー軸を回転させると、その動作に連
動してトナーホッパーは現像装置に対して上昇しつつト
ナー補給口がシャッタにより閉じられていく。一方、現
像装置を装置本体に装着してトナーホッパーを現像装置
に接続する際にレバー軸を回転させると、その動作に連
動してトナーホッパーは現像装置に対して下降しつつト
ナー補給口が開放されていく。(Function) According to the image forming apparatus of the present invention, when the lever shaft is rotated when the developing device is removed from the main body of the device, the toner hopper is raised relative to the developing device and the toner supply port is opened in conjunction with the rotation of the lever shaft. It is closed by the shutter. On the other hand, when the developing device is attached to the main body of the device and the toner hopper is connected to the developing device, when the lever shaft is rotated, the toner hopper is lowered relative to the developing device and the toner replenishment port is opened. It will be done.
（実施例）
以下、本発明の画像形成装置の実施例を第１図に基づい
て説明する。(Example) Hereinafter, an example of the image forming apparatus of the present invention will be described based on FIG.
第１図は本発明の画像形成装置の一実施例を示す断面図
である。FIG. 1 is a sectional view showing an embodiment of an image forming apparatus of the present invention.
本実施例の画像形成装置は、現像装置１と該現像装置１
の上方に配設されるトナーホッパー２と該トナーホッパ
ー２に固着されるホッパー軸３と該ホッパー軸３と係止
するカム体４と該カム体４を取りしけ装置本体内部に回
動自在に配設されるレバー軸５とを有するものである。The image forming apparatus of this embodiment includes a developing device 1 and a developing device 1.
A toner hopper 2 disposed above, a hopper shaft 3 fixed to the toner hopper 2, a cam body 4 that engages with the hopper shaft 3, and a cam body 4 that is freely rotatable inside the loading device main body. It has a lever shaft 5 disposed on.
更に、詳しく述べると、トナーホッパー２の下端部には
、トナーホッパ−２内部のトナーを図示しないトナー補
給ローラ等により現像装置１に補給するためのトナー補
給口６が設けられ、このトナー補給口６を開閉するため
のシャッタ７を取りつけたブーＩ７８がトナーホッパー
２の側壁面に回転自在に配設されている。そして、前記
レバー軸５の一端部にもプーリ８が取り付けられており
、両プーリ８．８間には駆動伝達ベルト９が掛けられて
いる。この時、駆動伝達ベルト９は、レバー軸５がトナ
ーホッパー２を上昇させる方向に回転する際にはシャッ
タ７がトナー補給口６を閉ざすように、且つレバー軸５
がトナーホッパー２を下降させる方向に回転する際には
シャッタ７がトナー補給口６を開けるように動作するよ
うに両プーリ８．８間に掛けられている。More specifically, a toner replenishment port 6 is provided at the lower end of the toner hopper 2 for replenishing the toner inside the toner hopper 2 to the developing device 1 by a toner replenishment roller (not shown). A boot I78 equipped with a shutter 7 for opening and closing is rotatably disposed on the side wall surface of the toner hopper 2. A pulley 8 is also attached to one end of the lever shaft 5, and a drive transmission belt 9 is stretched between both pulleys 8.8. At this time, the drive transmission belt 9 is configured such that when the lever shaft 5 rotates in a direction to raise the toner hopper 2, the shutter 7 closes the toner supply port 6, and the lever shaft 5
The shutter 7 is hooked between both pulleys 8 and 8 so that the shutter 7 operates to open the toner supply port 6 when the toner hopper 2 rotates in the direction of lowering the toner hopper 2 .
引き続いて、本実施例の作用について説明すると、現像
装置１を装置本体から取り外す際にレバー軸５を反時計
回りの方向に回転させると、第１図に破線で示すように
、レバー軸５側のプーリ８およびベルト９により駆動が
伝達され、シャッタ７側のブーＩ７８が時計回りの方向
に回転駆動する。Next, to explain the operation of this embodiment, when the lever shaft 5 is rotated counterclockwise when removing the developing device 1 from the main body of the device, the lever shaft 5 side is rotated as shown by the broken line in FIG. The drive is transmitted by the pulley 8 and belt 9, and the shutter I78 on the shutter 7 side is rotated clockwise.
このことにより、トナーホッパー２は現像装置１に対し
て上昇しつつトナー補給口６がシャツタフにより閉じら
れていく。そして、レバー軸５が所定の位置まで回転さ
せられた時には、トナー補給口６はシャツタフにより確
実に密閉されている。As a result, the toner hopper 2 is raised relative to the developing device 1, and the toner replenishment port 6 is closed by the shirt tough. When the lever shaft 5 is rotated to a predetermined position, the toner supply port 6 is reliably sealed by the shirt tough.
一方、現像装置１を装置本体に装着してトナーホッパー
２を現像装置１に接続する際にレバー軸５を時計回りの
方向に回転させると、第１図に実線で示すように、その
動作に連動してトナーホッパー２側のプーリ８が反時計
回りの方向に回転駆動する。このことにより、トナーホ
ッパー２は現像装置１に対して下降しつつトナー補給口
６を閉ざしていたシャッタ７が移動することによりトナ
ー補給口６が開放されていく。そして、レバー軸５が所
定の位置まで回転させられた時には、トナー補給口６は
完全に開放されており、この状態でトナーホッパー２は
像装置１に接続される。On the other hand, when the lever shaft 5 is rotated clockwise when the developing device 1 is attached to the main body of the device and the toner hopper 2 is connected to the developing device 1, the operation changes as shown by the solid line in FIG. Interlockingly, the pulley 8 on the toner hopper 2 side is rotationally driven in the counterclockwise direction. As a result, the toner hopper 2 is lowered relative to the developing device 1, and the shutter 7, which had closed the toner replenishing port 6, moves, thereby opening the toner replenishing port 6. When the lever shaft 5 is rotated to a predetermined position, the toner supply port 6 is completely opened, and the toner hopper 2 is connected to the image device 1 in this state.
本実施例では、レバー軸の回転をシャッタに伝達する機
構としてプーリとベルトを使用したが、これに限らず、
ギヤを組み合わせて使用しても良い
（効果）
本発明の画像形成装置によれば、現像装置を装置本体か
ら取り外す際にレバー軸を回転させると、その動作に連
動してトナーホッパーは現像装置に対して上昇しつつト
ナー補給口がシャッタにより閉じられていく。一方、現
像装置を装置本体に装着してトナーホッパーを現像装置
に接続する際にレバー軸を回転させると、その動作に連
動してトナーホッパーは現像装置に対して下降しつつト
ナー補給口が開放されていく。このことにより、レバー
軸を回転させてトナーホッパーを現像装置に対して上下
方向に昇降させた際に、トナーホッパーのトナー補給口
を確実且つ完全に開開することができる。In this embodiment, a pulley and a belt are used as a mechanism for transmitting the rotation of the lever shaft to the shutter, but the mechanism is not limited to this.
Gears may be used in combination (Effects) According to the image forming apparatus of the present invention, when the lever shaft is rotated when removing the developing device from the main body of the apparatus, the toner hopper is moved into the developing device in conjunction with the rotation of the lever shaft. On the other hand, the toner supply port is closed by the shutter while rising. On the other hand, when the developing device is attached to the main body of the device and the toner hopper is connected to the developing device, when the lever shaft is rotated, the toner hopper is lowered relative to the developing device and the toner replenishment port is opened. It will be done. As a result, when the lever shaft is rotated to move the toner hopper up and down relative to the developing device, the toner supply port of the toner hopper can be reliably and completely opened.
第１図は本発明の画像形成装置の一実施例を示す断面図
、第２図は従来の画像形成装置を示す断面図である。FIG. 1 is a sectional view showing an embodiment of an image forming apparatus according to the present invention, and FIG. 2 is a sectional view showing a conventional image forming apparatus.
Claims (1)
にトナーを補給するためのトナー補給口を有するトナー
ホッパーと装置本体内部に回動可能に配設され前記トナ
ーホッパーを現像装置に対して昇降させるためのレバー
軸とを有し、前記現像装置をその現像ローラ軸芯方向に
摺動させて画像形成装置本体内部に脱着する際、前記レ
バー軸を回動させて前記トナーホッパーを現像装置に対
して上下方向へ昇降する画像形成装置において、前記ト
ナーホッパーのトナー補給口近傍に、該トナー補給口を
開閉するシャッタを設け、該シャッタを前記レバー軸の
回動動作に連動させて閉じ又は開けるようにしたことを
特徴とする画像形成装置。(1) A developing device, a toner hopper disposed above the developing device and having a toner replenishment port for replenishing toner to the developing device, and a toner hopper rotatably disposed inside the device main body to connect the toner hopper to the developing device. and a lever shaft for raising and lowering the toner hopper, and when the developing device is slid in the axial direction of the developing roller and detached from the inside of the image forming apparatus main body, the lever shaft is rotated to raise and lower the toner hopper. In an image forming apparatus that moves up and down in the vertical direction with respect to a developing device, a shutter for opening and closing the toner replenishment port is provided near the toner replenishment port of the toner hopper, and the shutter is linked to the rotational movement of the lever shaft. An image forming apparatus characterized in that it can be closed or opened.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1198532A JP2572451B2 (en) | 1989-07-31 | 1989-07-31 | Image forming device |
| US07/426,748 US5121165A (en) | 1988-10-28 | 1989-10-24 | Developer unit and a toner hopper for an image forming device |
| EP89119839A EP0366113B1 (en) | 1988-10-28 | 1989-10-25 | Image forming device |
| DE68916745T DE68916745T2 (en) | 1988-10-28 | 1989-10-25 | Imaging device. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1198532A JP2572451B2 (en) | 1989-07-31 | 1989-07-31 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0362069A true JPH0362069A (en) | 1991-03-18 |
| JP2572451B2 JP2572451B2 (en) | 1997-01-16 |
Family
ID=16392716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1198532A Expired - Fee Related JP2572451B2 (en) | 1988-10-28 | 1989-07-31 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2572451B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519625A (en) * | 1990-11-26 | 1993-01-29 | Mita Ind Co Ltd | Electrostatic latent image developing device and toner cartridge applied thereto |
| US5485968A (en) * | 1992-09-28 | 1996-01-23 | Bridgestone Metalpha Co., Ltd. | Take-up reel for metallic filament |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122370A (en) * | 1984-07-10 | 1986-01-30 | Canon Inc | Developing device |
| JPS6332574A (en) * | 1986-07-25 | 1988-02-12 | Nec Corp | Toner replenishing device for electrophotographic system printer |
| JPH02109076A (en) * | 1988-10-18 | 1990-04-20 | Canon Inc | Image forming device |
-
1989
- 1989-07-31 JP JP1198532A patent/JP2572451B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122370A (en) * | 1984-07-10 | 1986-01-30 | Canon Inc | Developing device |
| JPS6332574A (en) * | 1986-07-25 | 1988-02-12 | Nec Corp | Toner replenishing device for electrophotographic system printer |
| JPH02109076A (en) * | 1988-10-18 | 1990-04-20 | Canon Inc | Image forming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519625A (en) * | 1990-11-26 | 1993-01-29 | Mita Ind Co Ltd | Electrostatic latent image developing device and toner cartridge applied thereto |
| US5485968A (en) * | 1992-09-28 | 1996-01-23 | Bridgestone Metalpha Co., Ltd. | Take-up reel for metallic filament |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2572451B2 (en) | 1997-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |