JPS55118064A - Detecting method for toner concentration of magnetic brush developer - Google Patents
Detecting method for toner concentration of magnetic brush developerInfo
- Publication number
- JPS55118064A JPS55118064A JP2456079A JP2456079A JPS55118064A JP S55118064 A JPS55118064 A JP S55118064A JP 2456079 A JP2456079 A JP 2456079A JP 2456079 A JP2456079 A JP 2456079A JP S55118064 A JPS55118064 A JP S55118064A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- toner concentration
- current
- developer
- electromagnet
- 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
Abstract
PURPOSE:To detect toner concentration stably with good accuracy by applying a magnetic field to the develoer, applying an electric field in the same direction as the direction of said magnetic field and measuring the current flowing there. CONSTITUTION:This is constituted by an electromagnet 2 for applying a magnetic field to developer 1, the pulses 3 to be applied to the electromagnet 2 at the measurement and a current measuring electrode 4. The developer 1 is fed to the current measuring electrode 4 and current is flowed to the electromagnet 2 to apply a magnetic field to the developer 1. An electric field is applied to the measuring electrode 4 from a power source 5 in the same direction as this magnetic field and the current in the state is measured with a current measuring device 6, whereby the toner concentration is detected. The develoer 1 flows into continuously, due to which clogging occurs if the magnetic field is being applied steadily and therefore the pulses 3 are added. Thereby, the toner concentration may be detected stably with good accuracy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2456079A JPS55118064A (en) | 1979-03-05 | 1979-03-05 | Detecting method for toner concentration of magnetic brush developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2456079A JPS55118064A (en) | 1979-03-05 | 1979-03-05 | Detecting method for toner concentration of magnetic brush developer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55118064A true JPS55118064A (en) | 1980-09-10 |
Family
ID=12141536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2456079A Pending JPS55118064A (en) | 1979-03-05 | 1979-03-05 | Detecting method for toner concentration of magnetic brush developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55118064A (en) |
-
1979
- 1979-03-05 JP JP2456079A patent/JPS55118064A/en active Pending
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