JPS6157841U - - Google Patents
Info
- Publication number
- JPS6157841U JPS6157841U JP14228084U JP14228084U JPS6157841U JP S6157841 U JPS6157841 U JP S6157841U JP 14228084 U JP14228084 U JP 14228084U JP 14228084 U JP14228084 U JP 14228084U JP S6157841 U JPS6157841 U JP S6157841U
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- developer
- emitting element
- liquid
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Wet Developing In Electrophotography (AREA)
Description
第１図は本考案の実施例を示す断面図、第２図
は本考案の装置による現像液濃度と受光素子の抵
抗値との関係の一例を示す曲線図、第３図は本考
案の装置の実施例の回路図、第４図乃至第６図は
夫々従来の現像液濃度検出装置の一例を示す断面
図である。
２０…現像液濃度検出装置、２１…基板、２２
…発光素子（ＬＥＤ素子）、２３…受光素子（Ｐ
Ｔ素子）、２４…透明カバー、２５…発光々線、
２６…反射光線、３０…現像液タンク、３１…現
像液。
FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a curve diagram showing an example of the relationship between the developer concentration and the resistance value of the light-receiving element in the apparatus of the present invention, and FIG. 3 is the apparatus of the present invention. The circuit diagram of the embodiment and FIGS. 4 to 6 are sectional views showing an example of a conventional developer concentration detection device, respectively. 20...Developer concentration detection device, 21...Substrate, 22
...Light emitting element (LED element), 23... Light receiving element (P
T element), 24...transparent cover, 25...luminescent line,
26... Reflected light beam, 30... Developer tank, 31... Developer.
Claims (1)
ース内に設置され、発光素子と受光素子とこれら
を液密に覆う中実透明カバーとを有し、上記発光
素子より発し上記カバーの表面で内面反射した光
線が受光素子に入射する如く発光素子と受光素子
とが配置され、受光素子の出力より現像液濃度を
検知するようにしたことを特徴とする現像液濃度
検出装置。 (2) 上記の発光素子と受光素子とが同一基板上
に設けられていることを特徴とする実用新案登録
請求の範囲第１項に記載の現像液濃度検出装置。 (3) 上記の装置が液面検出装置をも兼ねること
を特徴とする実用新案登録請求の範囲第１項又は
第２項に記載の現像液濃度検出装置。[Scope of Claim for Utility Model Registration] (1) The above-mentioned utility model is installed in a space in a developer tank in which a developer is to be stored, and has a light emitting element, a light receiving element, and a solid transparent cover that covers these in a liquid-tight manner. A developing device characterized in that the light-emitting element and the light-receiving element are arranged so that the light emitted from the light-emitting element and internally reflected on the surface of the cover enters the light-receiving element, and the developer concentration is detected from the output of the light-receiving element. Liquid concentration detection device. (2) The developer concentration detection device according to claim 1, wherein the light-emitting element and the light-receiving element are provided on the same substrate. (3) The developer concentration detecting device according to claim 1 or 2, wherein the device also serves as a liquid level detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14228084U JPS6157841U (en) | 1984-09-21 | 1984-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14228084U JPS6157841U (en) | 1984-09-21 | 1984-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157841U true JPS6157841U (en) | 1986-04-18 |
Family
ID=30700605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14228084U Pending JPS6157841U (en) | 1984-09-21 | 1984-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004081674A1 (en) * | 2003-03-13 | 2004-09-23 | Pfu Limited | Toner temperature adjusting method and device for liquid development electrophotographic device |
-
1984
- 1984-09-21 JP JP14228084U patent/JPS6157841U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004081674A1 (en) * | 2003-03-13 | 2004-09-23 | Pfu Limited | Toner temperature adjusting method and device for liquid development electrophotographic device |
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