JPH0264570A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0264570A JPH0264570A JP63215060A JP21506088A JPH0264570A JP H0264570 A JPH0264570 A JP H0264570A JP 63215060 A JP63215060 A JP 63215060A JP 21506088 A JP21506088 A JP 21506088A JP H0264570 A JPH0264570 A JP H0264570A
- Authority
- JP
- Japan
- Prior art keywords
- developing device
- image forming
- gear
- main body
- developing
- 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
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Color Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、レーザプリンタ、複写機等の画像形成装置、
特に複数現像器収納装置を本体外部に装備する画像形成
装置に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to image forming apparatuses such as laser printers and copying machines;
In particular, the present invention relates to an image forming apparatus equipped with a plurality of developing device storage devices outside the main body.
（従来の技術）
本出願人は、画像形成装置における広範なカラー化のニ
ーズに対処するものとして、画像形成装置の本体外部に
設置して所望の色現像器を本体内部の現像動作位置に自
動供給することができる複数現像器収納装置を提案した
（特開昭６１−２５６２１４号等参照）。(Prior Art) In order to meet the wide-ranging needs for colorization in image forming apparatuses, the present applicant has installed a developing device outside the main body of the image forming apparatus and automatically moves a desired color developing device to a developing operation position inside the main body. We have proposed a storage device for multiple developing devices that can supply multiple developing devices (see Japanese Patent Application Laid-open No. 256214/1983).
第３図に斯かる複数現像器収納装置Ｂを有する画像形成
装置ｌの要部断面を示すが、複数現像器収納装置Ｂは画
像形成装置本体Ａの外部に着脱可能であって、且つ内部
に上下動自在な収納ケース２を有して構成されている。FIG. 3 shows a cross section of a main part of an image forming apparatus l having such a multiple developer storage device B, and the multiple developer storage device B is removable from the outside of the image forming apparatus main body A, and is also provided inside. It is configured with a storage case 2 that is vertically movable.
そして、収納ケース２内は仕切板３，４．５によって複
数の収納部６．７．８が形成されており、収納部６，７
．８内にはそれぞれ異なる色の現像剤を収容して成る色
現像器９Ａ、９Ｂ、９Ｃが収納されるようになっている
。Inside the storage case 2, a plurality of storage sections 6.7.8 are formed by the partition plates 3, 4.5.
．． Color developing devices 9A, 9B, and 9C each containing a different color developer are housed in the color developing device 8.
一方１画像形成装置本体Ａ内の感光ドラム１１の近傍に
は、黒色現像剤を収容して成る黒現像器１０と収納ケー
ス２の収納部８から選択された色現像器９Ｃとが配され
ている。On the other hand, near the photosensitive drum 11 in the main body A of the image forming apparatus 1, a black developing device 10 containing a black developer and a color developing device 9C selected from the storage section 8 of the storage case 2 are arranged. There is.
又、各色現像器９Ａ （９Ｂ、９Ｃ）の上面にはラック
１２が刻設されており、画像形成装置本体Ａの現像器搬
入口１３近傍には、各色現像！！９Ａ（９Ｂ、９Ｃ）の
ラック１２に噛合すべき搬送ギヤ１４が配されており、
該搬送ギヤ１４は不図示の駆動源にて回転駆動される。Further, a rack 12 is carved on the upper surface of each color developing device 9A (9B, 9C), and a rack 12 is provided near the developing device inlet 13 of the main body A of the image forming apparatus. ! A conveyance gear 14 to be engaged with the rack 12 of 9A (9B, 9C) is arranged,
The conveyance gear 14 is rotationally driven by a drive source (not shown).
更に、図示のように選択された色現像器９Ｃと黒現像器
１０間には軸１５を中心に回動しめられるリンク１６が
配されており、該リンク１６の一端（下端）は黒現像器
１０にピン１７にて枢着されており、同リンク１６の他
端（上端）は色現像器９Ｃのストッパ１８に係合してい
る。Furthermore, as shown in the figure, a link 16 that is rotatable about a shaft 15 is arranged between the selected color developer 9C and the black developer 10, and one end (lower end) of the link 16 is connected to the black developer 10. 10 by a pin 17, and the other end (upper end) of the link 16 engages with a stopper 18 of the color developing device 9C.
而して、選択された色現像器９Ｃの収納ケース２から本
体Ａへの移送及び本体Ａから収納ケース２への移送は、
該色現像器９Ｃの上面に形成されたラック１２に嵌合す
る搬送ギヤ１４を回転駆動することによってなされる。Therefore, the transfer of the selected color developing device 9C from the storage case 2 to the main body A and from the main body A to the storage case 2 is as follows.
This is done by rotationally driving a conveying gear 14 that fits into a rack 12 formed on the upper surface of the color developing device 9C.
尚、第３図に実線にて示すように色現像器９Ｃが感光ド
ラム１１に加圧されているときにはラック１２は搬送ギ
ヤ１４から離れ、同図中、鎖線にて示すように色現像器
９Ｃの感光トラム１１に対する加圧が解除された状態で
はラック１２が搬送ギヤ１４に噛みあうように構成され
ている。Note that when the color developing device 9C is pressurized against the photosensitive drum 11, as shown by the solid line in FIG. The rack 12 is configured to mesh with the conveying gear 14 when the pressure applied to the photosensitive tram 11 is released.
（発明が解決しようとする課題）
ところで、第３図に実線にて示すように色現像器９Ｃを
感光ドラム１１に加圧されている状態から鎖線にて示す
ように加圧解除状態に移すには、リンク１６を不図示の
駆動源にて軸１５を中心に矢印方向に回動させればよい
、すると、黒現像器ｌＯが感光トラム１１に加圧され、
色現像器９Ｃが感光トラム１１から離れてその上面に形
成されたラック１２が搬送ギヤ１４に噛み合うが、この
とき搬送ギヤ１４が負荷となってリンク１６を回動させ
るために大きな駆動力を要し、この駆動力が不足すると
黒現像器１０が感光ドラム１１に十分加圧されないとい
う問題が生ずる。(Problem to be Solved by the Invention) By the way, in order to move the color developing device 9C from the state where it is pressurized against the photosensitive drum 11 as shown by the solid line in FIG. 3 to the state where the pressure is released as shown by the chain line, The link 16 can be rotated in the direction of the arrow about the shaft 15 by a drive source (not shown). Then, the black developer lO is pressurized against the photosensitive tram 11,
When the color developing device 9C is separated from the photosensitive tram 11, the rack 12 formed on the top surface thereof engages with the conveyance gear 14. At this time, the conveyance gear 14 becomes a load and a large driving force is required to rotate the link 16. However, if this driving force is insufficient, a problem arises in that the black developing device 10 is not sufficiently pressurized against the photosensitive drum 11.
そこで、搬送ギヤ１４の軸端にクラッチ等を入れて通常
は搬送ギヤ１４をフリーの状態としておくことも考えら
れるが、このようにすると色現像器９Ｃは搬送ギヤ１４
に噛み合う位置までは戻るものの、戻る際に該色現像器
９Ｃのラック１２と搬送ギヤ１４とか歯先当たりして両
者が確実に噛み合っていない状態が生してしまう、斯か
る状態のときに色現像器９Ｃを収納ケース２側に移動さ
せようとすると、色現像器９Ｃの手前と奥側とでラック
１２と搬送ギヤ１４との噛み合いにおいて１〜２歯ズし
てしまうということが起こり、このために色現像器９Ｃ
が斜行して途中で引っ掛かってしまうという問題が生ず
る。Therefore, it is conceivable to insert a clutch or the like into the shaft end of the conveyance gear 14 so that the conveyance gear 14 is normally in a free state.
However, when returning, the rack 12 of the color developing device 9C and the conveyor gear 14 come into contact with the teeth of the conveyor gear 14, resulting in a state in which they do not mesh securely. When an attempt is made to move the developing device 9C to the storage case 2 side, the meshing between the rack 12 and the conveyance gear 14 at the front and back sides of the color developing device 9C is misaligned by one or two teeth. Color developer 9C
A problem arises in that the object travels diagonally and gets caught in the middle.
本発明は上記問題に鑑みてなされたもので、その目的と
する処は、現像器の複数現像器収納装置側への移動を常
に確実に、且つ円滑に行なうことができる画像形成装置
を提供するにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide an image forming apparatus that can always reliably and smoothly move a developing device to a multiple developing device storage device. It is in.
（課題を解決するための手段）
本発明に係る画像形成装置は、画像形成装置本体の外部
に着脱可能であって、所定の色現像機能を有する現像器
を保持するための複数の収納部を有する複数現像器収納
装置と、該複数現像器収納装置の収納部の何れかと画像
形成装置本体との間で現像器を移動させる移動機構を有
し、現像器が本体加圧状態から解除状態に移動するとき
に前記移動機構に駆動をかけるようにしたものであるこ
とを特徴とする。(Means for Solving the Problems) An image forming apparatus according to the present invention includes a plurality of storage sections that are removably attached to the outside of the image forming apparatus main body and that hold developing devices having a predetermined color developing function. and a moving mechanism for moving the developing device between any of the storage sections of the multiple developing device storage device and the image forming apparatus main body, the developing device being moved from a main body pressurized state to a released state. It is characterized in that the moving mechanism is driven when moving.
（作用）
例えば、移動機構を構成する搬送ギヤを、現像器が本体
加圧状態から解除状態に移動するときに回転駆動すれば
、該搬送ギヤと現像器に形成されたラック等が確実に噛
み合い、現像器が複数現像器収納装置側へ確実に、且つ
円滑に移動せしめられる。(Function) For example, if the conveyance gear that constitutes the moving mechanism is rotated when the developing unit moves from the pressurized state to the released state, the conveying gear and the rack formed on the developing unit will surely mesh with each other. , the developing devices can be reliably and smoothly moved to the side of the multiple developing device storage device.
（実施例）
以下に本発明の一実施例を添付図面に基づいて説明する
。(Example) An example of the present invention will be described below based on the accompanying drawings.
第１図及び第２図は本発明に係る画像形成装置要部の断
面図であり、第１図は色現像器が加圧状態にあるときの
図、第２図は同色現像器が解除状態にあるときの図であ
る。尚、第１図及び第２図においては第３図に示したと
同一要素には同一符号を付し、以下、それらについての
説明は省略する。1 and 2 are cross-sectional views of essential parts of an image forming apparatus according to the present invention, in which FIG. 1 shows a color developing device in a pressurized state, and FIG. 2 shows a same color developing device in a released state. It is a figure when it is in . Incidentally, in FIGS. 1 and 2, the same elements as shown in FIG. 3 are given the same reference numerals, and description thereof will be omitted hereinafter.
本実施例においては、複数現像器収納装置１Ｂの装置本
体Ａに対向する面にチャンネル状の保持部材１９が結着
されており、該保持部材１９には現像器検知センサー２
０が取り付けられている。In this embodiment, a channel-shaped holding member 19 is attached to the surface of the multiple developing device storage device 1B facing the device main body A, and a developing device detection sensor 2 is attached to the holding member 19.
0 is attached.
又、保持部材１９の下部に結着されたブラケット２１に
は現像器検知レバー２２の中間部が軸２３にて回動自在
に枢着されて設けられており、該現像器検知レバー２２
は第１図に示すように色現像器９Ｃが加圧状態にあると
きには図示姿勢を保ワている。A bracket 21 fixed to the lower part of the holding member 19 is provided with an intermediate portion of a developing device detection lever 22 rotatably attached to a shaft 23.
As shown in FIG. 1, when the color developing device 9C is in a pressurized state, it maintains the illustrated attitude.
而して、第１図に示すように色現像器９Ｃが感光ドラム
１１に加圧され、黒現像器ｌＯが感光トラム１１から離
れているときには、感光ドラム１１上に形成された潜像
は色現像器９Ｃによってカラー現像され、カラーコピー
が得られるが、このとき１色現像器９Ｃの上面に形成さ
れたラック１２は図示のように搬送ギヤ１４に噛み合っ
ていない。Therefore, as shown in FIG. 1, when the color developing device 9C is pressurized against the photosensitive drum 11 and the black developing device 1O is separated from the photosensitive drum 11, the latent image formed on the photosensitive drum 11 is colored. Color development is performed by the developer 9C to obtain a color copy, but at this time the rack 12 formed on the upper surface of the one-color developer 9C is not engaged with the conveyance gear 14 as shown.
上記のカラーコピーが終了したという指令が発せられる
と、不図示の駆動源によつてリンク１６が軸１５を中心
として第１図の矢印ａ方向に回動せしめられ、これによ
って黒現像器ｌＯは矢印す方向に移動して第２図に示す
ように感光ドラム１１に圧接せしめられ１色現像器９Ｃ
は第１図の矢印Ｃ方向に移動して第２図に示すように感
光トラム１１から離れ、黒現像器１０による現像が可能
な状態とされる。これと同時に（即ち、カラーコピー終
了の指令が発せられると同時に）、搬送ギヤ１４が第１
図の矢印ｄ方向の駆動を受け、この搬送ギヤ１４は解除
状態にある色現像器９Ｃのラック１２に確実に噛み合う
、このように、色現像器９Ｃが搬送ギヤ１４に噛み合う
位置まで移動すると、第２図に示すように該色現像器９
Ｃが現像器検知レバー２２を押し上げてこれを軸２３を
中心として矢印ｅ方向に回動せしめるため、現像器検知
センサー２０はこの現像器検知レバー２２の回動を検知
して搬送ギヤ１４の回転を停止させる信号を発し、これ
によって搬送ギヤ１４の回転が停止され、このとき該搬
送ギヤ１４と色現像器９Ｃのラック１２とは確実に噛み
合っており、この結果、色現像器９Ｃの現像器収納装置
Ｂ側への移動か常に確実、且つ円滑に行なわれることと
なる。When the above-mentioned command indicating that the color copy is completed is issued, the link 16 is rotated about the shaft 15 in the direction of the arrow a in FIG. The one-color developer 9C moves in the direction of the arrow and is brought into pressure contact with the photosensitive drum 11 as shown in FIG.
moves in the direction of arrow C in FIG. 1 and leaves the photosensitive tram 11 as shown in FIG. At the same time as this (that is, at the same time as the command to finish color copying is issued), the conveyance gear 14 is
Driven in the direction of arrow d in the figure, this conveyance gear 14 reliably engages with the rack 12 of the color developing device 9C in the released state.When the color developing device 9C moves to the position where it engages with the conveyance gear 14 in this way, As shown in FIG.
C pushes up the developer detection lever 22 and rotates it in the direction of arrow e around the shaft 23, so the developer detection sensor 20 detects the rotation of the developer detection lever 22 and detects the rotation of the conveyance gear 14. This causes the conveyor gear 14 to stop rotating. At this time, the conveyor gear 14 and the rack 12 of the color developing device 9C are securely engaged, and as a result, the developing device of the color developing device 9C The movement to the storage device B side is always performed reliably and smoothly.
（発明の効果）
以上の説明で明らかな如く本発明によれば、複数現像器
収納装置を有する画像形成装置において、現像器が本体
加圧状態から解除状態に移るときに該現像器の移動機構
に駆動をかけるようにしたため、現像器の複数現像器収
納装置側への移動を常に確実に、且つ円滑に行なうこと
ができるという効果が得られる。(Effects of the Invention) As is clear from the above description, according to the present invention, in an image forming apparatus having a plurality of developing device storage devices, when the developing device moves from the main body pressurizing state to the releasing state, the moving mechanism of the developing device Since the drive is applied to the plurality of developer storage devices, it is possible to always move the developer units reliably and smoothly to the side of the multiple developer storage device.
第１図及び第２図は本発明に係る画像形成装置要部の縦
断面図、第３図は従来の画像形成装置の縦断面図である
。
１・・・画像形成装置、６，７．８−・・収納部。
９Ａ、９Ｂ、９Ｃ・・・色現像器、１２−・・ラック。
１４・・・搬送ギヤ、２０・・・現像器検知センサー２
２・・・現像器検知レバー、Ａ・・・画像形成装置本体
、Ｂ−・・複数現像器収納装置。1 and 2 are vertical cross-sectional views of essential parts of an image forming apparatus according to the present invention, and FIG. 3 is a vertical cross-sectional view of a conventional image forming apparatus. 1... Image forming device, 6, 7.8-... Storage section. 9A, 9B, 9C...Color developer, 12-...Rack. 14... Conveyance gear, 20... Developing device detection sensor 2
2... Developing device detection lever, A... Image forming apparatus main body, B-... Multiple developing device storage device.
Claims (1)
現像機能を有する現像器を保持するための複数の収納部
を有する複数現像器収納装置と、該複数現像器収納装置
の収納部の何れかと画像形成装置本体との間で現像器を
移動させる移動機構を有し、現像器が本体加圧状態から
解除状態に移動するときに前記移動機構に駆動をかける
ようにしたことを特徴とする画像形成装置。A multiple developer storage device that is removably attached to the outside of an image forming apparatus main body and has a plurality of storage sections for holding developing devices having a predetermined color developing function, and a storage section of the multiple developer storage device. The image forming apparatus has a moving mechanism for moving the developing device between the main body and the main body of the image forming apparatus, and the moving mechanism is driven when the developing device moves from a pressurized state to a released state. image forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63215060A JP2606897B2 (en) | 1988-08-31 | 1988-08-31 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63215060A JP2606897B2 (en) | 1988-08-31 | 1988-08-31 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0264570A true JPH0264570A (en) | 1990-03-05 |
| JP2606897B2 JP2606897B2 (en) | 1997-05-07 |
Family
ID=16666092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63215060A Expired - Lifetime JP2606897B2 (en) | 1988-08-31 | 1988-08-31 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2606897B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229820A (en) * | 1992-03-20 | 1993-07-20 | Eastman Kodak Company | Toner monitor mount for image-forming apparatus |
| JP2010156790A (en) * | 2008-12-26 | 2010-07-15 | Brother Ind Ltd | Image forming apparatus and developing cartridge |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121877A (en) * | 1986-11-11 | 1988-05-25 | Canon Inc | Image forming device |
-
1988
- 1988-08-31 JP JP63215060A patent/JP2606897B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121877A (en) * | 1986-11-11 | 1988-05-25 | Canon Inc | Image forming device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229820A (en) * | 1992-03-20 | 1993-07-20 | Eastman Kodak Company | Toner monitor mount for image-forming apparatus |
| JP2010156790A (en) * | 2008-12-26 | 2010-07-15 | Brother Ind Ltd | Image forming apparatus and developing cartridge |
| JP4692626B2 (en) * | 2008-12-26 | 2011-06-01 | ブラザー工業株式会社 | Image forming apparatus and developing cartridge |
| US8346126B2 (en) | 2008-12-26 | 2013-01-01 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus and developing cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2606897B2 (en) | 1997-05-07 |
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