JPS54161940A - Method and apparatus for detecting toner concentration in electrophotographic copier - Google Patents
Method and apparatus for detecting toner concentration in electrophotographic copierInfo
- Publication number
- JPS54161940A JPS54161940A JP6992978A JP6992978A JPS54161940A JP S54161940 A JPS54161940 A JP S54161940A JP 6992978 A JP6992978 A JP 6992978A JP 6992978 A JP6992978 A JP 6992978A JP S54161940 A JPS54161940 A JP S54161940A
- Authority
- JP
- Japan
- Prior art keywords
- light
- developer
- toner concentration
- carrier
- reflected light
- 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
- 238000001514 detection method Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000002310 reflectometry Methods 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Dry Development In Electrophotography (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6992978A JPS54161940A (en) | 1978-06-12 | 1978-06-12 | Method and apparatus for detecting toner concentration in electrophotographic copier |
| US06/045,759 US4273843A (en) | 1978-06-12 | 1979-06-05 | Method of detecting toner concentration in electrophotographic copying machine |
| DE2923806A DE2923806C2 (de) | 1978-06-12 | 1979-06-12 | Vorrichtung zur Bestimmung der Tonerkonzentration in elektrofotografischen Kopiergeräten |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6992978A JPS54161940A (en) | 1978-06-12 | 1978-06-12 | Method and apparatus for detecting toner concentration in electrophotographic copier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54161940A true JPS54161940A (en) | 1979-12-22 |
| JPS6211299B2 JPS6211299B2 (2) | 1987-03-11 |
Family
ID=13416853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6992978A Granted JPS54161940A (en) | 1978-06-12 | 1978-06-12 | Method and apparatus for detecting toner concentration in electrophotographic copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54161940A (2) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551002A (en) * | 1983-10-04 | 1985-11-05 | Fuji Xerox Co., Ltd. | Developer density detecting apparatus |
| JPH01202642A (ja) * | 1988-02-09 | 1989-08-15 | Canon Inc | 測定装置 |
-
1978
- 1978-06-12 JP JP6992978A patent/JPS54161940A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551002A (en) * | 1983-10-04 | 1985-11-05 | Fuji Xerox Co., Ltd. | Developer density detecting apparatus |
| JPH01202642A (ja) * | 1988-02-09 | 1989-08-15 | Canon Inc | 測定装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6211299B2 (2) | 1987-03-11 |
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