GB1031223A - Process and apparatus for rendering latent electrostatic images visible on electrophotographic material - Google Patents
Process and apparatus for rendering latent electrostatic images visible on electrophotographic materialInfo
- Publication number
- GB1031223A GB1031223A GB3299/63A GB329963A GB1031223A GB 1031223 A GB1031223 A GB 1031223A GB 3299/63 A GB3299/63 A GB 3299/63A GB 329963 A GB329963 A GB 329963A GB 1031223 A GB1031223 A GB 1031223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- electrostatic images
- electrophotographic material
- iron
- powder
- 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
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
- G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
- G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
1,031,223. Developing electrostatic images. FARBWERKE HOECHST A.G. Jan.25, 1963 [Jan. 27, 1962],No. 3299/63. Heading G2H. Latent electrostatic images on electrophotographic material are rendered visible by contact with a developer powder consisting of an electrically conductive particulate carrier and a dyed toner in a chamber in which the powder is vigorously whirled by a rotating electromagnetic field. Preferably the field is produced by a stator excited with three-phase current. The electrophotographic material may be moved continuously through the whirled powder in a closed chamber of circular or other cylindrical or prismatic form having entry and exit slots in the end walls, and the whirling action may be assisted by mounting with the chamber a hollow cylindrical rotor of non- ferrous metal having blade-or screw-shaped paddles extending into the chamber interior. A fixed core of soft iron or dynamo sheet may be disposed within the chamber to intensify the field. If desired the whirling chamber may be evacuated. The carrier particles may be of iron or copper, brass or aluminium alone or with iron.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0035874 | 1962-01-27 | ||
| FR922607A FR1345982A (en) | 1962-01-27 | 1963-01-25 | Method and apparatus for making images of electrostatic charges on electrophotographic materials visible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1031223A true GB1031223A (en) | 1966-06-02 |
Family
ID=25975210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3299/63A Expired GB1031223A (en) | 1962-01-27 | 1963-01-25 | Process and apparatus for rendering latent electrostatic images visible on electrophotographic material |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1345982A (en) |
| GB (1) | GB1031223A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7809420A (en) * | 1978-09-15 | 1980-03-18 | Repro Sv | REPRODUCTION DEVICE. |
-
1963
- 1963-01-25 FR FR922607A patent/FR1345982A/en not_active Expired
- 1963-01-25 GB GB3299/63A patent/GB1031223A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1345982A (en) | 1963-12-13 |
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