DE2262745C3 - Verfahren zur Herstellung von oxidbedecktem Eisen- oder Stahlpulver als Trägermittel mit steuerbarem elektrischen Widerstand - Google Patents
Verfahren zur Herstellung von oxidbedecktem Eisen- oder Stahlpulver als Trägermittel mit steuerbarem elektrischen WiderstandInfo
- Publication number
- DE2262745C3 DE2262745C3 DE2262745A DE2262745A DE2262745C3 DE 2262745 C3 DE2262745 C3 DE 2262745C3 DE 2262745 A DE2262745 A DE 2262745A DE 2262745 A DE2262745 A DE 2262745A DE 2262745 C3 DE2262745 C3 DE 2262745C3
- Authority
- DE
- Germany
- Prior art keywords
- powder
- temperature
- iron
- air
- resistance
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 67
- 239000000843 powder Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 23
- 229910052742 iron Inorganic materials 0.000 title claims description 16
- 229910000831 Steel Inorganic materials 0.000 title claims description 10
- 239000010959 steel Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000011261 inert gas Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 238000005243 fluidization Methods 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 239000002245 particle Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000001816 cooling Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 5
- 239000010951 brass Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 241000589614 Pseudomonas stutzeri Species 0.000 description 1
- 240000007313 Tilia cordata Species 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
- G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
- Compounds Of Iron (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21217271A | 1971-12-27 | 1971-12-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2262745A1 DE2262745A1 (de) | 1973-07-12 |
| DE2262745B2 DE2262745B2 (de) | 1980-10-02 |
| DE2262745C3 true DE2262745C3 (de) | 1981-05-14 |
Family
ID=22789852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2262745A Expired DE2262745C3 (de) | 1971-12-27 | 1972-12-21 | Verfahren zur Herstellung von oxidbedecktem Eisen- oder Stahlpulver als Trägermittel mit steuerbarem elektrischen Widerstand |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3767477A (OSRAM) |
| JP (1) | JPS5611724B2 (OSRAM) |
| CA (1) | CA975207A (OSRAM) |
| DE (1) | DE2262745C3 (OSRAM) |
| FR (1) | FR2167101A5 (OSRAM) |
| GB (1) | GB1418880A (OSRAM) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1449835A (en) * | 1973-12-07 | 1976-09-15 | Nat Res Dev | Composite metal polymer films |
| JPS50127641A (OSRAM) * | 1974-03-27 | 1975-10-07 | ||
| US3970571A (en) * | 1974-12-20 | 1976-07-20 | Eastman Kodak Company | Method for producing improved electrographic developer |
| US4223085A (en) * | 1976-04-05 | 1980-09-16 | Xerox Corporation | Semi-conductive nickel carrier particles |
| JPS53110836A (en) * | 1977-03-09 | 1978-09-27 | Konishiroku Photo Ind Co Ltd | Iron powder developing carrier for electrostatic image and its manufacture as well as developing and agent image formation method |
| US4115076A (en) * | 1977-05-24 | 1978-09-19 | Bethlehem Steel Corporation | Abrasive material suitable for manually blast cleaning ferrous metals prior to painting |
| JPS5913732B2 (ja) * | 1977-07-05 | 1984-03-31 | コニカ株式会社 | 鉄粉現像担体及びその製造方法並びに現像剤と画像形成方法 |
| JPS5496033A (en) * | 1977-12-21 | 1979-07-30 | Hitachi Chemical Co Ltd | Developing agent for reverse development |
| JPS5581352A (en) * | 1978-12-07 | 1980-06-19 | Hitachi Chem Co Ltd | Dry type two-component developer for reversal development |
| US4252881A (en) * | 1978-12-11 | 1981-02-24 | Xerox Corporation | Developer mixture |
| US4229234A (en) * | 1978-12-29 | 1980-10-21 | Exxon Research & Engineering Co. | Passivated, particulate high Curie temperature magnetic alloys |
| US4318735A (en) * | 1979-06-18 | 1982-03-09 | Toda Kogyo Corp. | Process for preparing magnetic particles with metallic region therein, and magnetic particles prepared by the process |
| US4310611A (en) * | 1979-06-29 | 1982-01-12 | Eastman Kodak Company | Electrographic magnetic carrier particles |
| DE3116489A1 (de) * | 1981-04-25 | 1982-11-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur stabilisierung pyrophorer, im wesentlichen aus eisen bestehender ferromagnetischer nadelfoermiger metallteilchen |
| US4425383A (en) | 1982-07-06 | 1984-01-10 | Xerox Corporation | Process for oxidation of carrier particles |
| US4894305A (en) * | 1984-05-17 | 1990-01-16 | Xerox Corporation | Carrier and developer compositions generated from fly ash particles |
| DE3419638C2 (de) * | 1984-05-25 | 1987-02-26 | MAN Technologie GmbH, 8000 München | Verfahren zur oxidativen Erzeugung von Schutzschichten auf einer Legierung |
| DE3727383A1 (de) * | 1987-08-17 | 1989-03-02 | Basf Ag | Carrier fuer reprographie und verfahren zur herstellung dieser carrier |
| GB2288411B (en) * | 1994-03-24 | 1998-04-15 | Silberline Ltd | Metal pigments |
| US5849817A (en) * | 1994-03-24 | 1998-12-15 | Silberline Limited | Metal pigments |
| US20210237151A1 (en) * | 2020-01-30 | 2021-08-05 | Ap&C Advanced Powders & Coatings Inc. | System and method for treating additive powder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2197931A (en) * | 1936-11-06 | 1940-04-23 | Frank C Jacobs | Magnetic testing material |
| US2365720A (en) * | 1940-02-09 | 1944-12-26 | Johnson Lab Inc | High frequency core material and core |
| JPS5010805B1 (OSRAM) * | 1967-12-29 | 1975-04-24 |
-
1971
- 1971-12-27 US US00212172A patent/US3767477A/en not_active Expired - Lifetime
-
1972
- 1972-11-15 CA CA156,482A patent/CA975207A/en not_active Expired
- 1972-12-21 GB GB5902272A patent/GB1418880A/en not_active Expired
- 1972-12-21 DE DE2262745A patent/DE2262745C3/de not_active Expired
- 1972-12-26 FR FR7246141A patent/FR2167101A5/fr not_active Expired
- 1972-12-27 JP JP13013872A patent/JPS5611724B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3767477A (en) | 1973-10-23 |
| JPS5611724B2 (OSRAM) | 1981-03-17 |
| FR2167101A5 (OSRAM) | 1973-08-17 |
| JPS4873358A (OSRAM) | 1973-10-03 |
| CA975207A (en) | 1975-09-30 |
| DE2262745A1 (de) | 1973-07-12 |
| DE2262745B2 (de) | 1980-10-02 |
| GB1418880A (en) | 1975-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |