JPH021753U - - Google Patents
Info
- Publication number
- JPH021753U JPH021753U JP7900488U JP7900488U JPH021753U JP H021753 U JPH021753 U JP H021753U JP 7900488 U JP7900488 U JP 7900488U JP 7900488 U JP7900488 U JP 7900488U JP H021753 U JPH021753 U JP H021753U
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming apparatus
- rotating shaft
- rotational speed
- developing device
- 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
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案を適用した画像形成装置の一実
施例の説明図、第２図は本考案の要部を成す駆動
部の構成説明図、第３図は電磁クラツチの電源回
路図、第４図は電磁クラツチの制御手順のフロー
チヤートである。
１……ランプ、２，５〜９……ミラー、３……
第１スキヤナ、４……原稿台、１１……感光体、
１３……帯電チヤージヤ、１４……イレーサ、１
５，１６……現像装置、１７……レジストローラ
、２３……搬送ベルト、２４……定着ユニツト、
２５……分離爪、２６……ジヨガー、２７……中
間搬送ユニツト、２８……反転路、２９……反転
ローラ、３０……中間トレイ、４０……電磁クラ
ツチ、４０ａ……軸、４１……現像ギヤ、４２…
…現像ローラ、４２ａ……軸、４３……パルスジ
エネレータ、４４……フオトインタラプタ、４５
，４６……伝達ギヤ。
FIG. 1 is an explanatory diagram of an embodiment of an image forming apparatus to which the present invention is applied, FIG. 2 is an explanatory diagram of the configuration of a driving section that constitutes the main part of the present invention, FIG. 3 is a power supply circuit diagram of an electromagnetic clutch, and FIG. Figure 4 is a flowchart of the electromagnetic clutch control procedure. 1... Lamp, 2, 5-9... Mirror, 3...
1st scanner, 4... document table, 11... photoreceptor,
13... Charger, 14... Eraser, 1
5, 16...Developing device, 17...Register roller, 23...Transport belt, 24...Fixing unit,
25...Separation claw, 26...Jerger, 27...Intermediate conveyance unit, 28...Reversing path, 29...Reversing roller, 30...Intermediate tray, 40...Electromagnetic clutch, 40a...Shaft, 41... Developing gear, 42...
...Developing roller, 42a... Shaft, 43... Pulse generator, 44... Photo interrupter, 45
, 46...transmission gear.
Claims (1)
よつて排紙路方向と再給紙路方向との２方向へ切
替自在に構成した画像形成装置において、 現像装置にモータからの駆動力を伝達する電磁
クラツチの回転軸に回転速度を検出する検知手段
を配設し、 現像装置の該回転軸の回転速度が所定値を下回
つたことが該検知手段によつて検知されたときに
該分離爪を作動させて再給紙路を開放するととも
に、該モータへの入力電源電圧を定格電圧よりも
高くして印加する制御部を備えたことを特徴とす
る画像形成装置における現像装置の駆動部。[Scope of Claim for Utility Model Registration] In an image forming apparatus configured to be able to freely switch the conveying direction of a transfer sheet after fixing to two directions, a sheet ejection path direction and a refeed path direction, using a separation claw, A detection means for detecting the rotational speed is disposed on the rotating shaft of an electromagnetic clutch that transmits the driving force from the motor to the device, and the detecting means detects that the rotational speed of the rotating shaft of the developing device has fallen below a predetermined value. The present invention is characterized by comprising a control unit that operates the separating claw to open the paper refeeding path and applies an input power supply voltage to the motor at a level higher than the rated voltage when the separation claw is detected. A drive unit of a developing device in an image forming apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7900488U JPH021753U (en) | 1988-06-15 | 1988-06-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7900488U JPH021753U (en) | 1988-06-15 | 1988-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH021753U true JPH021753U (en) | 1990-01-08 |
Family
ID=31303893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7900488U Pending JPH021753U (en) | 1988-06-15 | 1988-06-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021753U (en) |
-
1988
- 1988-06-15 JP JP7900488U patent/JPH021753U/ja active Pending
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