JPH0425491B2 - - Google Patents
Info
- Publication number
- JPH0425491B2 JPH0425491B2 JP2269683A JP2269683A JPH0425491B2 JP H0425491 B2 JPH0425491 B2 JP H0425491B2 JP 2269683 A JP2269683 A JP 2269683A JP 2269683 A JP2269683 A JP 2269683A JP H0425491 B2 JPH0425491 B2 JP H0425491B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- signal
- toner
- detection
- circuit
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 83
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 16
- 239000002245 particle Substances 0.000 description 10
- 238000007493 shaping process Methods 0.000 description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 6
- 239000002800 charge carrier Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/08—Details of powder developing device not concerning the development directly
- G03G2215/0888—Arrangements for detecting toner level or concentration in the developing device
- G03G2215/0891—Optical detection
- G03G2215/0894—Optical detection through a light transmissive window in the developer container wall
- G03G2215/0897—Cleaning of the light transmissive window
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Dry Development In Electrophotography (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2269683A JPS59148851A (ja) | 1983-02-16 | 1983-02-16 | 光学式トナ−濃度検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2269683A JPS59148851A (ja) | 1983-02-16 | 1983-02-16 | 光学式トナ−濃度検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59148851A JPS59148851A (ja) | 1984-08-25 |
| JPH0425491B2 true JPH0425491B2 ( ) | 1992-05-01 |
Family
ID=12090031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2269683A Granted JPS59148851A (ja) | 1983-02-16 | 1983-02-16 | 光学式トナ−濃度検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59148851A ( ) |
-
1983
- 1983-02-16 JP JP2269683A patent/JPS59148851A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59148851A (ja) | 1984-08-25 |
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