JPS61157966U - - Google Patents
Info
- Publication number
- JPS61157966U JPS61157966U JP4038285U JP4038285U JPS61157966U JP S61157966 U JPS61157966 U JP S61157966U JP 4038285 U JP4038285 U JP 4038285U JP 4038285 U JP4038285 U JP 4038285U JP S61157966 U JPS61157966 U JP S61157966U
- Authority
- JP
- Japan
- Prior art keywords
- magnetized
- developer
- developing
- thickness regulating
- adjacent
- 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
- 230000001105 regulatory effect Effects 0.000 claims 5
- 238000000465 moulding Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
第1図はこの考案の一実施例を示す説明図、第
2図は第1図のマグネツトロールの着磁装置を示
す説明図、第3図は第1図の磁束密度分布を示す
グラフ、第4図はこの考案の他の実施例を示す説
明図、第5図は第4図の磁束密度分布を示すグラ
フである。
1……現像ドラム、2……排磁性体スリーブ、
3,3′……マグネツトロール、4……現像剤、
7……ブレード、8……ピツクアツプ部、9……
厚み規制部、10……保持部、11……現像部、
12……切離し部、13……第1着磁部、14…
…第2着磁部、15……第3着磁部、16……第
4着磁部、17……平坦部、18,19,20…
…凹溝。
FIG. 1 is an explanatory diagram showing an embodiment of the invention, FIG. 2 is an explanatory diagram showing the magnet roll magnetization device of FIG. 1, and FIG. 3 is a graph showing the magnetic flux density distribution of FIG. 1. FIG. 4 is an explanatory diagram showing another embodiment of this invention, and FIG. 5 is a graph showing the magnetic flux density distribution of FIG. 4. 1...Developing drum, 2...Magnetic exclusion sleeve,
3, 3′... Magnetrol, 4... Developer,
7...Blade, 8...Pickup section, 9...
Thickness regulation section, 10... Holding section, 11... Development section,
12... Separation part, 13... First magnetized part, 14...
...Second magnetized part, 15...Third magnetized part, 16...Fourth magnetized part, 17...Flat part, 18, 19, 20...
...concave groove.
Claims (1)
する非磁性スリーブと、そのスリーブの中に固定
されたマグネツトロールとを備えた現像装置にお
いて、 非磁性体スリーブはその外周部に、現像剤を導
入し吸着するピツクアツプ部と、ブレードによつ
て現像剤の厚みを規制する厚み規制部と、規制さ
れた現像剤を吸着力を減じつつ保持する保持部と
、現像ドラムに近接して現像剤を穂立ちさせる現
像部と、現像剤を離脱する切離し部とを前記順序
で配置し、 マグネツトロールは一体成形によつて形成され
その外周面に少なくとも、 前記現像部に対向して着磁された第1着磁部と
、前記厚み規制部と前記保持部の中間に対向し前
記第1着磁部に隣接してそれと異極に着磁された
第2着磁部と、前記ピツクアツプ部に対向し前記
第2着磁部に隣接してそれと異極に着磁された第
3着磁部と、前記第1着磁部に隣接してそれと異
極に着磁された第4着磁部を有するとともに、前
記現像部に対向して形成された平坦面と、前記保
持部および前記厚み規制部に対向して各々形成さ
れた凹溝と、前記切離し部に対向して形成された
凹溝又は平坦面とを備えたことを特徴とする現像
装置。[Claims for Utility Model Registration] In a developing device including a developing drum that rotates in one direction, a non-magnetic sleeve that rotates in one direction, and a magnet roll fixed in the sleeve, a non-magnetic sleeve has a pick-up part that introduces and adsorbs the developer, a thickness regulating part that regulates the thickness of the developer with a blade, and a holding part that holds the regulated developer while reducing the adsorption force. A developing section that causes the developer to stand up in the vicinity of the developing drum and a separating section that separates the developer are arranged in the above order, and the magnet roll is formed by integral molding and has at least the above-mentioned developing section on its outer peripheral surface. a first magnetized part that is magnetized opposite to the thickness regulating part; and a second magnetized part that is opposite to the thickness regulating part and the holding part, is adjacent to the first magnetized part, and is magnetized to have a different polarity from the first magnetized part. a third magnetized part that faces the pick-up part, is adjacent to the second magnetized part, and is magnetized to have a different polarity; and a third magnetized part that is adjacent to the first magnetized part and is magnetized to have a different polarity from it. It has a fourth magnetized part, a flat surface formed facing the developing part, a groove formed respectively facing the holding part and the thickness regulating part, and the separating part. A developing device comprising grooves or flat surfaces formed to face each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4038285U JPS61157966U (en) | 1985-03-20 | 1985-03-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4038285U JPS61157966U (en) | 1985-03-20 | 1985-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61157966U true JPS61157966U (en) | 1986-09-30 |
Family
ID=30549220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4038285U Pending JPS61157966U (en) | 1985-03-20 | 1985-03-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61157966U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225270A (en) * | 1987-03-16 | 1988-09-20 | Canon Inc | Developing device |
JPS63313180A (en) * | 1987-06-16 | 1988-12-21 | Canon Inc | Developing device |
JP2020003640A (en) * | 2018-06-28 | 2020-01-09 | コニカミノルタ株式会社 | Magnet roller, development roller, development device and image formation apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55133068A (en) * | 1979-04-04 | 1980-10-16 | Matsushita Electric Ind Co Ltd | Magnetic brush developing device |
JPS56126866A (en) * | 1980-03-12 | 1981-10-05 | Ricoh Co Ltd | Magnetic brush developing device |
-
1985
- 1985-03-20 JP JP4038285U patent/JPS61157966U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55133068A (en) * | 1979-04-04 | 1980-10-16 | Matsushita Electric Ind Co Ltd | Magnetic brush developing device |
JPS56126866A (en) * | 1980-03-12 | 1981-10-05 | Ricoh Co Ltd | Magnetic brush developing device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225270A (en) * | 1987-03-16 | 1988-09-20 | Canon Inc | Developing device |
JPS63313180A (en) * | 1987-06-16 | 1988-12-21 | Canon Inc | Developing device |
JP2020003640A (en) * | 2018-06-28 | 2020-01-09 | コニカミノルタ株式会社 | Magnet roller, development roller, development device and image formation apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS61157966U (en) | ||
JPS61157967U (en) | ||
JPS6074155U (en) | developing device | |
JPS61124054U (en) | ||
JPS5948548U (en) | Tracking mechanism in developing device | |
JPS5979853U (en) | developing device | |
JPS6036659U (en) | magnet troll | |
JPS6094671U (en) | developing device | |
JPS643860U (en) | ||
JPS61140368U (en) | ||
JPS58153408U (en) | magnet troll | |
JPS6166371U (en) | ||
JPS6113859U (en) | magnetic brush device | |
JPS59121660U (en) | magnetic roll | |
JPS58157344U (en) | magnetic powder catcher | |
JPS59189653U (en) | developing device | |
JPS59138868U (en) | dry developer | |
JPS6046568U (en) | developing device | |
JPS617008U (en) | magnetic stand | |
JPS6059276U (en) | Test equipment for magnetic rollers for copying machines | |
JPS6036657U (en) | Toner remaining amount detection device | |
JPS6161553U (en) | ||
JPS6432566U (en) | ||
JPS60125657U (en) | developing device | |
JPS63195704U (en) |