JPS5540449A - Method for detecting development capability of two-color developer and developing apparatus provided with unit using its method - Google Patents
Method for detecting development capability of two-color developer and developing apparatus provided with unit using its methodInfo
- Publication number
- JPS5540449A JPS5540449A JP11308278A JP11308278A JPS5540449A JP S5540449 A JPS5540449 A JP S5540449A JP 11308278 A JP11308278 A JP 11308278A JP 11308278 A JP11308278 A JP 11308278A JP S5540449 A JPS5540449 A JP S5540449A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developer
- color developer
- amount
- color
- 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 development performance of a 2-color developer with high precision, by catching each color component separately from the 2-color developer, measuring each amount, and comparing each with a cleaning level to correct the amount. CONSTITUTION:Hopper 20 for storing 2-color developer 43 containing red and black toners is arranged in the recirculation cource. After flow route 23 has been cleaned by operation of vlaves 27 and 28, the cleaning levels of transparent conductive layers 22a and 22b are measured using light source 32 and photoelectric elements 33 and 34. Then, direct current voltages of reverse polarity are applied to layers 22a and 22b, respectively, the developer is allowed to drop freely to attach the black toner to layer 22a and the red toner to layer 22b. The attached amounts of both are measured. In computing circuit 37, the detected toner amounts are corrected by the cleaning levels, these values are compared to the set values from references each toner feed valves 41 and 42 are regulated to supply the required amount of each toner to the developer.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11308278A JPS5540449A (en) | 1978-09-14 | 1978-09-14 | Method for detecting development capability of two-color developer and developing apparatus provided with unit using its method |
DE2927477A DE2927477C2 (en) | 1978-07-08 | 1979-07-06 | Apparatus and method for measuring the developability of a powdered developer for electrostatography |
US06/057,882 US4266141A (en) | 1978-07-08 | 1979-07-16 | Toner developing ability measuring system for electrostatography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11308278A JPS5540449A (en) | 1978-09-14 | 1978-09-14 | Method for detecting development capability of two-color developer and developing apparatus provided with unit using its method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5540449A true JPS5540449A (en) | 1980-03-21 |
Family
ID=14603018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11308278A Pending JPS5540449A (en) | 1978-07-08 | 1978-09-14 | Method for detecting development capability of two-color developer and developing apparatus provided with unit using its method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540449A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031829A (en) * | 1973-04-16 | 1975-03-28 | ||
JPS5035285B2 (en) * | 1972-10-21 | 1975-11-14 |
-
1978
- 1978-09-14 JP JP11308278A patent/JPS5540449A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035285B2 (en) * | 1972-10-21 | 1975-11-14 | ||
JPS5031829A (en) * | 1973-04-16 | 1975-03-28 |
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