JPS56128977A - Control method for copying density - Google Patents
Control method for copying densityInfo
- Publication number
- JPS56128977A JPS56128977A JP17630280A JP17630280A JPS56128977A JP S56128977 A JPS56128977 A JP S56128977A JP 17630280 A JP17630280 A JP 17630280A JP 17630280 A JP17630280 A JP 17630280A JP S56128977 A JPS56128977 A JP S56128977A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- toner density
- area
- control
- constitution
- 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
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
- G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To exercies secure control over the density with miniature constitution by forming a standard image for controlling toner density in a prescribed region of a photoreceptor. CONSTITUTION:On photoreceptor drum 1, a latent image is formed by reference image exposure to an area outside of a picture area in the moving direction of drum 1 in the picture area and then developed to form toner density control picture 22. The reflected light that corresponds to the toner density of this picture 22 is detected by light emitting and photodetecting elements 20 and 21 to control the toner density. Then, the toner density is securely controlled with the miniature constitution with the control picture obtained by forming and developing the latent image under the same conditions with a copy picture provided in an area where the copy picture is to be formed, so that the copy picture of good quality can be formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17630280A JPS56128977A (en) | 1980-12-12 | 1980-12-12 | Control method for copying density |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17630280A JPS56128977A (en) | 1980-12-12 | 1980-12-12 | Control method for copying density |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12915077A Division JPS5461938A (en) | 1977-10-27 | 1977-10-27 | Copy concentration controller/paper clogging detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56128977A true JPS56128977A (en) | 1981-10-08 |
Family
ID=16011205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17630280A Pending JPS56128977A (en) | 1980-12-12 | 1980-12-12 | Control method for copying density |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56128977A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022642A (en) * | 1973-06-28 | 1975-03-11 | ||
JPS5233734A (en) * | 1975-09-10 | 1977-03-15 | Canon Inc | Device for detecting and controlling density |
-
1980
- 1980-12-12 JP JP17630280A patent/JPS56128977A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022642A (en) * | 1973-06-28 | 1975-03-11 | ||
JPS5233734A (en) * | 1975-09-10 | 1977-03-15 | Canon Inc | Device for detecting and controlling density |
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