JPH049060U - - Google Patents
Info
- Publication number
- JPH049060U JPH049060U JP4781890U JP4781890U JPH049060U JP H049060 U JPH049060 U JP H049060U JP 4781890 U JP4781890 U JP 4781890U JP 4781890 U JP4781890 U JP 4781890U JP H049060 U JPH049060 U JP H049060U
- Authority
- JP
- Japan
- Prior art keywords
- developer carrier
- latent image
- electric field
- alternating current
- current electric
- 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
- 230000005684 electric field Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims 5
- 230000005415 magnetization Effects 0.000 claims 4
- 230000000737 periodic effect Effects 0.000 claims 4
- 230000005389 magnetism Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Developing For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は実施例の現像装置の説明図、第２図は
他の実施例の現像装置の説明図、第３図はブレー
ドの振幅の曲線図、第４図は従来の現像装置の説
明図である。
１……感光体（潜像担持体）、３……現像ロー
ラ（現像剤担持体）、６……トナー薄層形成ブレ
ード（薄層形成部材）、９……交流バイアス電源
（交流電界）、９′……交流バイアス電源（他の
交流電界）。
Fig. 1 is an explanatory diagram of the developing device of the embodiment, Fig. 2 is an explanatory diagram of the developing device of another embodiment, Fig. 3 is a curve diagram of the amplitude of the blade, and Fig. 4 is an explanatory diagram of the conventional developing device. It is. 1... Photoreceptor (latent image carrier), 3... Developing roller (developer carrier), 6... Toner thin layer forming blade (thin layer forming member), 9... AC bias power supply (AC electric field), 9'...AC bias power supply (other AC electric field).
Claims (1)
した現像剤担持体を潜像の形成された潜像担持体
に対して相対的に移動させ、前記現像剤担持体と
前記潜像担持体との間に交流電界を形成させて現
像を行う現像装置において、 前記潜像担持体の周速をＶｐ、前記現像剤担持
体の周速をｎＶｐ、前記着磁の周期的ピツチをλ
及び前記交流電界の周波数をｆとするとき、前記
潜像担持体の周速Ｖｐに対して、Ｖｐ／ｆ，λ／
ｎ及びＶｐ／｜ｆ−ｎＶｐ／λ｜が全て所定値以
下になるように、前記現像剤担持体の周速ｎＶｐ
、前記着磁の周期的ピツチλ及び前記交流電界の
周波数ｆを定めたことを特徴とする現像装置。 (2) 周期的に着磁を施され一成分トナーを担持
した現像剤担持体を潜像の形成された潜像担持体
に対して相対的に移動させ、前記現像剤担持体と
前記潜像担持体との間に交流電界を形成させて現
像を行う現像装置において、 磁性と弾性とを備え前記現像剤担持体との間に
他の交流電界を印加してトナーの薄層を形成する
薄層形成部材を有し、前記潜像担持体の周速をＶ
ｐ、前記現像剤担持体の周速をｎＶｐ、前記着磁
の周期的ビツチをλ及び前記他の交流電界の周波
数をｆ′とするとき、前記潜像担持体の周速Ｖｐ
に対して、Ｖｐ／｜ｆ′−ｎＶｐ／λ｜が全て所
定値以下になるように、前記現像剤担持体の周速
ｎＶｐ、前記着磁の周期的ピツチλ及び前記他の
交流電界の周波数ｆ′を定めたことを特徴とする
現像装置。 (3) 周期的に着磁を施され一成分トナーを担持
した現像剤担持体を潜像の形成された潜像担持体
に対して相対的に移動させ、前記現像剤担持体と
前記潜像担持体との間に交流電界を形成させて現
像を行う現像装置において、 磁性と弾性とを備え前記現像剤担持体との間に
他の交流電界を印加してトナーの薄層を形成する
薄層形成部材を有し、該薄層形成部材の固有振動
数と前記他の交流電界の周波数とが前記薄層形成
部材を共振させないだけ離れるように、前記薄層
形成部材又は前記他の交流電界の周波数を形成し
たことを特徴とする現像装置。[Claims for Utility Model Registration] (1) A developer carrier that is periodically magnetized and carries a monocomponent toner is moved relative to the latent image carrier on which a latent image is formed; In a developing device that performs development by forming an alternating current electric field between a developer carrier and the latent image carrier, the circumferential speed of the latent image carrier is Vp, the circumferential velocity of the developer carrier is nVp, and the The periodic pitch of magnetization is λ
And when the frequency of the alternating current electric field is f, Vp/f, λ/ with respect to the peripheral speed Vp of the latent image carrier.
The circumferential speed nVp of the developer carrier is adjusted such that n and Vp/|f−nVp/λ| are all below a predetermined value.
, a developing device characterized in that the periodic pitch λ of the magnetization and the frequency f of the alternating current electric field are determined. (2) A developer carrier carrying one-component toner that is periodically magnetized is moved relative to the latent image carrier on which a latent image is formed, and the developer carrier and the latent image In a developing device that performs development by forming an alternating current electric field between the developer carrier and the developer carrier, a thin toner layer having magnetism and elasticity and forming a thin toner layer by applying another alternating current electric field between the developer carrier and the developer carrier. a layer forming member, and the peripheral speed of the latent image carrier is set to V.
p, the peripheral speed of the developer carrier is nVp, the periodic bit of magnetization is λ, and the frequency of the other AC electric field is f', the peripheral velocity of the latent image carrier Vp
, the peripheral speed nVp of the developer carrier, the periodic pitch λ of the magnetization, and the frequency of the other alternating current electric field so that Vp/|f′−nVp/λ| are all below a predetermined value. A developing device characterized in that f' is determined. (3) A developer carrier carrying one-component toner that is periodically magnetized is moved relative to the latent image carrier on which a latent image is formed, and the developer carrier and the latent image In a developing device that performs development by forming an alternating current electric field between the developer carrier and the developer carrier, a thin toner layer having magnetism and elasticity and forming a thin toner layer by applying another alternating current electric field between the developer carrier and the developer carrier. the thin layer forming member or the other alternating current electric field such that the natural frequency of the thin layer forming member and the frequency of the other alternating current electric field are separated by an amount that does not cause the thin layer forming member to resonate. A developing device characterized by forming a frequency of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990047818U JP2538096Y2 (en) | 1990-05-08 | 1990-05-08 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990047818U JP2538096Y2 (en) | 1990-05-08 | 1990-05-08 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH049060U true JPH049060U (en) | 1992-01-27 |
| JP2538096Y2 JP2538096Y2 (en) | 1997-06-04 |
Family
ID=31564086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990047818U Expired - Lifetime JP2538096Y2 (en) | 1990-05-08 | 1990-05-08 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538096Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3036478C (en) | 2016-09-13 | 2021-09-07 | Google Llc | Buffer layer to prevent etching by photoresist developer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166371U (en) * | 1984-10-03 | 1986-05-07 |
-
1990
- 1990-05-08 JP JP1990047818U patent/JP2538096Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166371U (en) * | 1984-10-03 | 1986-05-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538096Y2 (en) | 1997-06-04 |
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