JPH0318556U - - Google Patents
Info
- Publication number
- JPH0318556U JPH0318556U JP7934089U JP7934089U JPH0318556U JP H0318556 U JPH0318556 U JP H0318556U JP 7934089 U JP7934089 U JP 7934089U JP 7934089 U JP7934089 U JP 7934089U JP H0318556 U JPH0318556 U JP H0318556U
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- image forming
- elastic body
- forming apparatus
- excited
- 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
- 230000005284 excitation Effects 0.000 claims 3
- 238000005452 bending Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Wet Developing In Electrophotography (AREA)
Description
第１図から第３図までは本考案を具体化した実
施例を示すもので、第１図は本実施例の湿式電子
写真複写装置の概略図、第２図はプリウエツトロ
ーラユニツト１の概略図、第３図はプリウエツト
ローラ２の接離駆動手段である超音波振動子２１
の斜視図である。
図中、２はプリウエツトローラ、４は支持手段
に対応する保持部材、２１は超音波振動子、２２
は弾性体、２３は第１励振体に対応する第１圧電
体、２４は第２励振体に対応する第２圧電体、２
５は接触部に対応する振動面である。
1 to 3 show an embodiment embodying the present invention. FIG. 1 is a schematic diagram of a wet-type electrophotographic copying apparatus of this embodiment, and FIG. 2 is a schematic diagram of a prewetting roller unit 1. 3 shows an ultrasonic vibrator 21 which is a means for driving the pre-wetting roller 2 toward and away from it.
FIG. In the figure, 2 is a pre-wet roller, 4 is a holding member corresponding to the support means, 21 is an ultrasonic vibrator, and 22
2 is an elastic body, 23 is a first piezoelectric body corresponding to the first exciting body, 24 is a second piezoelectric body corresponding to the second exciting body, 2
5 is a vibration surface corresponding to the contact portion.
Claims (1)
で湿潤するプリウエツトローラと、 該プリウエツトローラを支持する支持手段と該
支持手段に少なくとも一部が接触し、該接触部に
略楕円振動を励起可能な超音波振動子とを備える
ことを特徴とする画像形成装置。 ２ 請求項１記載の画像形成装置において、 前記超音波振動子は、 平板形状を有する弾性体と、 前記弾性体の振動面に一方向の振動を励起する
第１の励振体と、 前記一方向とは異なる他方向の振動を励起する
第２の励振体とから成り、 各励振体により励振されるそれぞれの振動の合
成により前記振動面に略楕円振動を励起すること
を特徴とする画像形成装置。 ３ 請求項２記載の画像形成装置において、弾性
体に励起される前記一方向の振動が前記弾性体の
屈曲振動であり、前記他方向の振動が前記弾性体
の伸縮振動であることを特徴とする画像形成装置
。[Claims for Utility Model Registration] 1. A pre-wet roller that wets the electrostatic latent image surface with a liquid such as a developer before the development process, a support means for supporting the pre-wet roller, and at least a portion of the support means. An image forming apparatus comprising: an ultrasonic vibrator that is in contact with each other and is capable of exciting substantially elliptical vibrations in the contact portion. 2. The image forming apparatus according to claim 1, wherein the ultrasonic transducer includes: an elastic body having a flat plate shape; a first excitation body that excites vibration in one direction on a vibration surface of the elastic body; and a second excitation body that excites vibrations in a direction different from that of the image forming apparatus, and a substantially elliptical vibration is excited in the vibration plane by combining the respective vibrations excited by the respective excitation bodies. . 3. The image forming apparatus according to claim 2, wherein the vibration in one direction excited in the elastic body is a bending vibration of the elastic body, and the vibration in the other direction is a stretching vibration of the elastic body. image forming device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7934089U JPH0318556U (en) | 1989-07-05 | 1989-07-05 | |
| GB9013898A GB2235820A (en) | 1989-06-21 | 1990-06-21 | A drive system for a mechanical part of an image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7934089U JPH0318556U (en) | 1989-07-05 | 1989-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318556U true JPH0318556U (en) | 1991-02-22 |
Family
ID=31623411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7934089U Pending JPH0318556U (en) | 1989-06-21 | 1989-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318556U (en) |
-
1989
- 1989-07-05 JP JP7934089U patent/JPH0318556U/ja active Pending
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