JPS5773771A - Controlling device for developer concentration - Google Patents
Controlling device for developer concentrationInfo
- Publication number
- JPS5773771A JPS5773771A JP14965080A JP14965080A JPS5773771A JP S5773771 A JPS5773771 A JP S5773771A JP 14965080 A JP14965080 A JP 14965080A JP 14965080 A JP14965080 A JP 14965080A JP S5773771 A JPS5773771 A JP S5773771A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- concentration
- sleeve
- peripheral face
- developing
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
- G03G15/0849—Detection or control means for the developer concentration
- G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To maintain concentration of developer uniform and enable good developing at all times by detecting the concentration of developer in a developing means, and performing control to replenish deficient developer. CONSTITUTION:A developing device 1 is provided with a fixed magnet 2 and a nonmagnetic sleeve 3 installed concentrically and rotatably in its outer periphery. Developer T held on the peripheral face of the sleeve 3 is given to a photosensitive drum 4 with rotation of the sleeve 3, and an electrostatic latent image formed on the peripheral face of the photosensitive drum 4 is changed to a visible image. Concentration of the developer is detected as reflective concentration by a reflective concentration detector 5 provided near the peripheral face of the sleeve 3. Output of the detector 5 is led to a comparison controlling circuit 8 and drives a motor 9 by signals corresponding to the concentration of the developer. A screw conveyor 11 is then rotated through a gear mechanism 10, and toner T1 in the supplying hopper 12 is supplied to the developing section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14965080A JPS5773771A (en) | 1980-10-24 | 1980-10-24 | Controlling device for developer concentration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14965080A JPS5773771A (en) | 1980-10-24 | 1980-10-24 | Controlling device for developer concentration |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5773771A true JPS5773771A (en) | 1982-05-08 |
Family
ID=15479852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14965080A Pending JPS5773771A (en) | 1980-10-24 | 1980-10-24 | Controlling device for developer concentration |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773771A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60112077A (en) * | 1983-11-01 | 1985-06-18 | アグフア・ゲヴエルト・ナームロゼ・ベンノートチヤツプ | Toner distribution control |
JPS62189484A (en) * | 1986-02-17 | 1987-08-19 | Toshiba Corp | Image forming device |
US5124751A (en) * | 1990-05-15 | 1992-06-23 | Minolta Camera Kabushiki Kaisha | Image forming apparatus with a toner density control device |
-
1980
- 1980-10-24 JP JP14965080A patent/JPS5773771A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60112077A (en) * | 1983-11-01 | 1985-06-18 | アグフア・ゲヴエルト・ナームロゼ・ベンノートチヤツプ | Toner distribution control |
JPS62189484A (en) * | 1986-02-17 | 1987-08-19 | Toshiba Corp | Image forming device |
US5124751A (en) * | 1990-05-15 | 1992-06-23 | Minolta Camera Kabushiki Kaisha | Image forming apparatus with a toner density control device |
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