JPS6450080A - Toner density controller - Google Patents
Toner density controllerInfo
- Publication number
- JPS6450080A JPS6450080A JP20784087A JP20784087A JPS6450080A JP S6450080 A JPS6450080 A JP S6450080A JP 20784087 A JP20784087 A JP 20784087A JP 20784087 A JP20784087 A JP 20784087A JP S6450080 A JPS6450080 A JP S6450080A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- toner sensor
- operation point
- developer
- toner density
- 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 control the toner concentration of a developer stably with high accuracy by controlling the toner density based on the operation point of a toner sensor. CONSTITUTION:The toner sensor 7 is fitted on the side wall, etc., of a developer container 2 so that a detection part contacts the developer 1 and the operation point of this toner sensor 7 is varied and set with a current flowing through a control line (a) or an applied voltage. A microcomputer 8 inputs the output of the toner sensor 7 through an output line (a) and sends a control signal to the toner sensor 7 through the control line (b) so that the operation point of the toner sensor 7 has a proper value, thereby controlling the current or voltage. The operation point of the toner sensor 7 is therefore set to the proper value automatically. Consequently, the toner density is controlled stably with high accuracy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20784087A JPS6450080A (en) | 1987-08-21 | 1987-08-21 | Toner density controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20784087A JPS6450080A (en) | 1987-08-21 | 1987-08-21 | Toner density controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6450080A true JPS6450080A (en) | 1989-02-27 |
Family
ID=16546393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20784087A Pending JPS6450080A (en) | 1987-08-21 | 1987-08-21 | Toner density controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6450080A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5038175A (en) * | 1989-05-30 | 1991-08-06 | Ricoh Company | Image density control method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60128470A (en) * | 1983-12-15 | 1985-07-09 | Toshiba Corp | Developing device |
JPS60178471A (en) * | 1984-02-27 | 1985-09-12 | Oki Electric Ind Co Ltd | Dry developing device |
JPS61149858A (en) * | 1984-12-24 | 1986-07-08 | Tdk Corp | Magnetic detecting device |
JPS62164067A (en) * | 1986-01-14 | 1987-07-20 | Hitachi Metals Ltd | Control method for developer toner concentration |
-
1987
- 1987-08-21 JP JP20784087A patent/JPS6450080A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60128470A (en) * | 1983-12-15 | 1985-07-09 | Toshiba Corp | Developing device |
JPS60178471A (en) * | 1984-02-27 | 1985-09-12 | Oki Electric Ind Co Ltd | Dry developing device |
JPS61149858A (en) * | 1984-12-24 | 1986-07-08 | Tdk Corp | Magnetic detecting device |
JPS62164067A (en) * | 1986-01-14 | 1987-07-20 | Hitachi Metals Ltd | Control method for developer toner concentration |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5038175A (en) * | 1989-05-30 | 1991-08-06 | Ricoh Company | Image density control method |
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