JPS63120265U - - Google Patents
Info
- Publication number
- JPS63120265U JPS63120265U JP1117887U JP1117887U JPS63120265U JP S63120265 U JPS63120265 U JP S63120265U JP 1117887 U JP1117887 U JP 1117887U JP 1117887 U JP1117887 U JP 1117887U JP S63120265 U JPS63120265 U JP S63120265U
- Authority
- JP
- Japan
- Prior art keywords
- toner concentration
- light emitting
- emitting diode
- transistor
- detection signal
- 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 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Dry Development In Electrophotography (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1117887U JPH0631486Y2 (ja) | 1987-01-28 | 1987-01-28 | トナ−濃度監視回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1117887U JPH0631486Y2 (ja) | 1987-01-28 | 1987-01-28 | トナ−濃度監視回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63120265U true JPS63120265U (fi) | 1988-08-03 |
JPH0631486Y2 JPH0631486Y2 (ja) | 1994-08-22 |
Family
ID=30798158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1117887U Expired - Lifetime JPH0631486Y2 (ja) | 1987-01-28 | 1987-01-28 | トナ−濃度監視回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0631486Y2 (fi) |
-
1987
- 1987-01-28 JP JP1117887U patent/JPH0631486Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0631486Y2 (ja) | 1994-08-22 |