JPH0258261U - - Google Patents
Info
- Publication number
- JPH0258261U JPH0258261U JP13602288U JP13602288U JPH0258261U JP H0258261 U JPH0258261 U JP H0258261U JP 13602288 U JP13602288 U JP 13602288U JP 13602288 U JP13602288 U JP 13602288U JP H0258261 U JPH0258261 U JP H0258261U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developing
- magnetic
- magnetic field
- latent image
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
第１図は本考案の現像装置におけるマグネツト
ローラの内部の磁極配置とその磁界分布を示す説
明図、第２図はこの現像装置を備えるレーザプリ
ンタの概要構成図、第３図はこの現像装置の断面
図、第４図は上記マグネツトローラと感光体との
間の現像部における磁性トナーの挙動を示す説明
図、第５図は、上記マグネツトローラの現像磁極
の法線方向の磁界のピーク位置と、それよりトナ
ー搬送方向下流側の隣接する水平磁界のピーク位
置との角度θ１に対するにじみの大小関係を示す
グラフ、第６図はこの角度θ１と地汚れとの関係
を示すグラフである。
１１……感光体（静電潜像担持体）、１４……
現像装置、２７……磁性トナー、２８……トナー
容器、３１……マグネツトローラ（トナー担持体
）、３２……トナー規制部材、３３……現像部、
３７……現像磁極、３７ａ・３７ｂ……現像磁極
の法線方向の磁界、そのピーク位置、４４・４４
ａ……トナー搬送方向下流側の水平磁界、そのピ
ーク位置。
Fig. 1 is an explanatory diagram showing the arrangement of magnetic poles inside the magnet roller and its magnetic field distribution in the developing device of the present invention, Fig. 2 is a schematic diagram of a laser printer equipped with this developing device, and Fig. 3 is a diagram of the developing device. 4 is an explanatory diagram showing the behavior of magnetic toner in the developing section between the magnet roller and the photoconductor, and FIG. 5 is a cross-sectional view of the magnetic field in the normal direction of the developing magnetic pole of the magnet roller. A graph showing the relationship between the peak position and the peak position of an adjacent horizontal magnetic field on the downstream side in the toner transport direction, and the magnitude of blurring relative to the angle θ 1. FIG. 6 is a graph showing the relationship between this angle θ 1 and background smearing. It is. 11... Photoreceptor (electrostatic latent image carrier), 14...
Developing device, 27...Magnetic toner, 28...Toner container, 31...Magnetic roller (toner carrier), 32...Toner regulating member, 33...Developing section,
37...Developing magnetic pole, 37a/37b...Magnetic field in the normal direction of the developing magnetic pole, its peak position, 44/44
a...Horizontal magnetic field on the downstream side in the toner transport direction, its peak position.
Claims (1)
と対向して現像部を構成し、前記容器内の磁性ト
ナーを該現像部に担持搬送するトナー担持部材と
、このトナー担持部材の前記静電潜像担持体とは
反対側に設けられ、前記現像部へ搬送された磁性
トナーを前記静電潜像担持体に吸着させて現像す
る現像磁極と、前記現像部よりトナー搬送方向上
流側で前記トナー担持体上の磁性トナーを一定の
厚さにするトナー規制部材とを有する現像装置に
おいて、前記現像磁極の法線方向の磁界のピーク
位置と、該現像磁極に隣接する水平方向の磁界の
うちトナー搬送方向下流側の水平磁界のピーク位
置との角度を３０度以下にしたことを特徴とする
、現像装置。 A container containing magnetic toner, a toner carrying member that constitutes a developing section facing the electrostatic latent image carrier and carrying and conveying the magnetic toner in the container to the developing section, and a developing magnetic pole, which is provided on the opposite side of the electrostatic latent image carrier, and which develops the magnetic toner conveyed to the developing section by adsorbing it to the electrostatic latent image carrier; In a developing device including a toner regulating member that makes the magnetic toner on the toner carrier have a constant thickness, the peak position of the magnetic field in the normal direction of the developing magnetic pole and the horizontal magnetic field adjacent to the developing magnetic pole are determined. A developing device characterized in that the angle with the peak position of the horizontal magnetic field on the downstream side in the toner transport direction is 30 degrees or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136022U JP2539959Y2 (en) | 1988-10-18 | 1988-10-18 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136022U JP2539959Y2 (en) | 1988-10-18 | 1988-10-18 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0258261U true JPH0258261U (en) | 1990-04-26 |
| JP2539959Y2 JP2539959Y2 (en) | 1997-07-02 |
Family
ID=31396149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988136022U Expired - Lifetime JP2539959Y2 (en) | 1988-10-18 | 1988-10-18 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2539959Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6283778A (en) * | 1985-10-07 | 1987-04-17 | Minolta Camera Co Ltd | Developing device |
| JPS63159868A (en) * | 1986-12-24 | 1988-07-02 | Canon Inc | Development method |
-
1988
- 1988-10-18 JP JP1988136022U patent/JP2539959Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6283778A (en) * | 1985-10-07 | 1987-04-17 | Minolta Camera Co Ltd | Developing device |
| JPS63159868A (en) * | 1986-12-24 | 1988-07-02 | Canon Inc | Development method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2539959Y2 (en) | 1997-07-02 |
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