DE2141870B2 - Verfahren zum automatischen Aufrechterhalten eines für elektrostatische Entwicklung optimalen Mengenverhältnisses von Tonerteilchen zu magnetischen Trägerteilchen sowie elektrophotographisches Kopiergerät - Google Patents
Verfahren zum automatischen Aufrechterhalten eines für elektrostatische Entwicklung optimalen Mengenverhältnisses von Tonerteilchen zu magnetischen Trägerteilchen sowie elektrophotographisches KopiergerätInfo
- Publication number
- DE2141870B2 DE2141870B2 DE2141870A DE2141870A DE2141870B2 DE 2141870 B2 DE2141870 B2 DE 2141870B2 DE 2141870 A DE2141870 A DE 2141870A DE 2141870 A DE2141870 A DE 2141870A DE 2141870 B2 DE2141870 B2 DE 2141870B2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic brush
- toner
- developer mixture
- toner particles
- mixture
- 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.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims description 47
- 230000005291 magnetic effect Effects 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 11
- 239000000203 mixture Substances 0.000 claims description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 230000035699 permeability Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 3
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 17
- 238000004804 winding Methods 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000005669 field effect Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JARHXLHLCUCUJP-UHFFFAOYSA-N ethene;terephthalic acid Chemical group C=C.OC(=O)C1=CC=C(C(O)=O)C=C1 JARHXLHLCUCUJP-UHFFFAOYSA-N 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
-
- 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
- G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Automation & Control Theory (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dry Development In Electrophotography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6590270A | 1970-08-21 | 1970-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2141870A1 DE2141870A1 (de) | 1972-03-30 |
| DE2141870B2 true DE2141870B2 (de) | 1979-06-21 |
Family
ID=22065914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2141870A Withdrawn DE2141870B2 (de) | 1970-08-21 | 1971-08-20 | Verfahren zum automatischen Aufrechterhalten eines für elektrostatische Entwicklung optimalen Mengenverhältnisses von Tonerteilchen zu magnetischen Trägerteilchen sowie elektrophotographisches Kopiergerät |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3707134A (https=) |
| JP (1) | JPS524942B1 (https=) |
| BE (1) | BE771604A (https=) |
| CA (1) | CA978585A (https=) |
| DE (1) | DE2141870B2 (https=) |
| FR (1) | FR2104578A5 (https=) |
| GB (1) | GB1367681A (https=) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3821938A (en) * | 1971-12-17 | 1974-07-02 | Ibm | Toner usage sensing system |
| JPS5246095B2 (https=) * | 1973-05-25 | 1977-11-21 | ||
| JPS5619637B2 (https=) * | 1973-06-20 | 1981-05-08 | ||
| US3999119A (en) * | 1975-03-26 | 1976-12-21 | Xerox Corporation | Measuring toner concentration |
| JPS52131729A (en) * | 1976-04-28 | 1977-11-04 | Ricoh Co Ltd | Toner concentration detection circuit |
| JPS5349437A (en) * | 1976-10-16 | 1978-05-04 | Hitachi Ltd | Toner density detector |
| US4270487A (en) * | 1977-10-27 | 1981-06-02 | Hitachi, Ltd. | Developer regulating device in developing apparatus |
| JPS55161261A (en) * | 1979-06-01 | 1980-12-15 | Katsuragawa Denki Kk | Toner replenishing method and its device |
| JPS5643556A (en) * | 1979-09-19 | 1981-04-22 | Toshiba Corp | Concentration control device of developer |
| GB2076314B (en) | 1980-05-02 | 1983-09-28 | Gestetner Mfg Ltd | Magnetic brush developer unit for photocopier |
| DE3149908A1 (de) * | 1980-12-19 | 1982-09-02 | Minolta Camera K.K., Osaka | Verfahren zum steuern der tonerkonzentration fuer elektrofotografische kopiergeraete |
| US4486090A (en) * | 1983-03-21 | 1984-12-04 | Minnesota Mining And Manufacturing Company | Copy machine with unauthorized copy prevention |
| JPS60229074A (ja) * | 1984-04-27 | 1985-11-14 | Toshiba Corp | トナ−濃度検出装置 |
| US5166729A (en) * | 1991-08-30 | 1992-11-24 | Xerox Corporation | Toner concentration sensing apparatus |
| US6248496B1 (en) * | 2000-03-07 | 2001-06-19 | Xerox Corporation | Method of replenishing developer in a hybrid scavengeless development system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671200A (en) * | 1950-10-18 | 1954-03-02 | Jerome F Lederer | Safety signal device |
| US3475316A (en) * | 1965-06-29 | 1969-10-28 | Sherwin Williams Co | Apparatus for measurement and control of nonvolatile components in liquid coating compositions |
| US3418163A (en) * | 1965-12-27 | 1968-12-24 | Sperry Rand Corp | Magnetoresistive magnetostriction monitoring |
| US3527651A (en) * | 1966-10-20 | 1970-09-08 | Addressograph Multigraph | Method of and apparatus for developing electrostatic images |
-
1970
- 1970-08-21 US US65902A patent/US3707134A/en not_active Expired - Lifetime
-
1971
- 1971-08-18 GB GB3881271A patent/GB1367681A/en not_active Expired
- 1971-08-20 DE DE2141870A patent/DE2141870B2/de not_active Withdrawn
- 1971-08-20 CA CA121,046A patent/CA978585A/en not_active Expired
- 1971-08-20 BE BE771604A patent/BE771604A/xx unknown
- 1971-08-20 FR FR7130362A patent/FR2104578A5/fr not_active Expired
- 1971-08-21 JP JP46063380A patent/JPS524942B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3707134A (en) | 1972-12-26 |
| DE2141870A1 (de) | 1972-03-30 |
| GB1367681A (en) | 1974-09-18 |
| CA978585A (en) | 1975-11-25 |
| JPS524942B1 (https=) | 1977-02-08 |
| BE771604A (fr) | 1971-12-31 |
| FR2104578A5 (https=) | 1972-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| BHN | Withdrawal | ||
| BI | Miscellaneous see part 2 | ||
| BI | Miscellaneous see part 2 |