GB1174573A - Process for Developing Latent Magnetic Images and use of Developing Particles Therein - Google Patents
Process for Developing Latent Magnetic Images and use of Developing Particles ThereinInfo
- Publication number
- GB1174573A GB1174573A GB4963466A GB4963466A GB1174573A GB 1174573 A GB1174573 A GB 1174573A GB 4963466 A GB4963466 A GB 4963466A GB 4963466 A GB4963466 A GB 4963466A GB 1174573 A GB1174573 A GB 1174573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- developing
- nov
- toner
- metal
- 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
- 239000002245 particle Substances 0.000 title abstract 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- -1 steel Chemical compound 0.000 abstract 2
- 229920001169 thermoplastic Polymers 0.000 abstract 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract 1
- 239000001856 Ethyl cellulose Substances 0.000 abstract 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 abstract 1
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229920001249 ethyl cellulose Polymers 0.000 abstract 1
- 235000019325 ethyl cellulose Nutrition 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000002923 metal particle Substances 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 229920006122 polyamide resin Polymers 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/061—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder with a protective layer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/06—Developing
- G03G13/08—Developing using a solid developer, e.g. powder developer
- G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush
-
- 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
- G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
-
- 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
- G03G9/083—Magnetic toner particles
-
- 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
- G03G9/083—Magnetic toner particles
- G03G9/0837—Structural characteristics of the magnetic components, e.g. shape, crystallographic structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
1,174,573. Developing latent magnetic images. GEVAERT-AGFA N.V. 4 Nov., 1966 [5 Nov., 1965], No. 49634/66. Divided out of 1,174,571. Heading B6C. Magnetic patterns are developed by applying discrete substantially spherical solid material comprising substantially spherical magnetically susceptible metal particles coated with a thermoplastics substance. The metal may be pure, e.g. iron, or an alloy, e.g. steel, and have a high initial permeability and is formed in particles varying in size from 5 to 500 microns produced by atomizing and quenching as disclosed in Specification 1,174,572. The coating is preferably a thermoplastics resin weighing 1 to 4% of the weight of the metal core, and examples include a polyamide resin. Cellulose nitrate, ethylcellulose and a hydrogenated rosin glycerol ester, generally applied in a solvent which is subsequently evaporated. This discrete toner is preferably applied in admixture with larger carrier particles, the toner and carrier being held together by opposite triboelectric charges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4963466A GB1174573A (en) | 1965-11-05 | 1965-11-05 | Process for Developing Latent Magnetic Images and use of Developing Particles Therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4963466A GB1174573A (en) | 1965-11-05 | 1965-11-05 | Process for Developing Latent Magnetic Images and use of Developing Particles Therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1174573A true GB1174573A (en) | 1969-12-17 |
Family
ID=10453030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4963466A Expired GB1174573A (en) | 1965-11-05 | 1965-11-05 | Process for Developing Latent Magnetic Images and use of Developing Particles Therein |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1174573A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2337360A1 (en) * | 1975-12-29 | 1977-07-29 | Elfotec Ag | ONE-COMPONENT MAGNETIC TONER AND ITS MANUFACTURING PROCESS |
| US4079014A (en) | 1976-07-21 | 1978-03-14 | Eastman Kodak Company | Electrographic toner and developer composition containing a 4-aza-1-azoniabicyclo(2.2.2) octane salt as a charge control agent |
| US4293631A (en) | 1979-03-12 | 1981-10-06 | Xerox Corporation | Electrographic toner compositions |
| US4323634A (en) | 1975-07-09 | 1982-04-06 | Eastman Kodak Company | Electrographic toner and developer composition containing quaternary ammonium salt charge control agent |
| US4599290A (en) * | 1985-01-02 | 1986-07-08 | Eastman Kodak Company | Negative charging carrier particles coated with a polymer having appended chlorendate groups |
| US4950575A (en) * | 1988-02-26 | 1990-08-21 | Mita Industrial Co., Ltd. | Toner for developing electrophotographic images and process for preparation thereof |
| EP0374851A3 (en) * | 1988-12-19 | 1991-01-30 | Konica Corporation | Magnetic toner |
-
1965
- 1965-11-05 GB GB4963466A patent/GB1174573A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323634A (en) | 1975-07-09 | 1982-04-06 | Eastman Kodak Company | Electrographic toner and developer composition containing quaternary ammonium salt charge control agent |
| FR2337360A1 (en) * | 1975-12-29 | 1977-07-29 | Elfotec Ag | ONE-COMPONENT MAGNETIC TONER AND ITS MANUFACTURING PROCESS |
| US4079014A (en) | 1976-07-21 | 1978-03-14 | Eastman Kodak Company | Electrographic toner and developer composition containing a 4-aza-1-azoniabicyclo(2.2.2) octane salt as a charge control agent |
| US4293631A (en) | 1979-03-12 | 1981-10-06 | Xerox Corporation | Electrographic toner compositions |
| US4599290A (en) * | 1985-01-02 | 1986-07-08 | Eastman Kodak Company | Negative charging carrier particles coated with a polymer having appended chlorendate groups |
| US4950575A (en) * | 1988-02-26 | 1990-08-21 | Mita Industrial Co., Ltd. | Toner for developing electrophotographic images and process for preparation thereof |
| EP0374851A3 (en) * | 1988-12-19 | 1991-01-30 | Konica Corporation | Magnetic toner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 414F | Notice of opposition given (sect. 14/1949) | ||
| 414E | Application relinquished (sect. 14/1949) | ||
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |