GB1251477A - - Google Patents
Info
- Publication number
- GB1251477A GB1251477A GB1251477DA GB1251477A GB 1251477 A GB1251477 A GB 1251477A GB 1251477D A GB1251477D A GB 1251477DA GB 1251477 A GB1251477 A GB 1251477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- developer
- assembly
- developing
- rotated
- cylinders
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
1,251,477. Electro-photographic copiers. XEROX CORP. May 28, 1970 [June 4, 1969 (2)], No.25639/70. Heading G2H. Developer is applied to a latent image bearing member 12 by magnetic brushes formed by the overlapping fields of assemblies 39, 40. During developing bar magnets 46, 51, 52 are held stationary while magnetizable cylinders 41, 50 rotate. Developer, agitated by augers 60, 61, is fed by paddles 55 to assembly 39 and thence to assembly 40; brush size being controlled by a blade 57. To stop developing a shaft 65 is rotated so that a member 66 abuts cylinder 50 to prevent further brush formation; and magnet 46 is rotated through 90 degrees to prevent further developer transfer between the cylinders. This developing system 17, together with similar systems (16, 18, 19) Fig.1 (not shown) each containing a differently coloured developer, is described for use in a multi-colour copier wherein an endless photoconductive belt (13) is charged and flash exposed to successive colour separation images through a lens (11) and filter assembly (25). The latent images are developed and transferred in register (using corona discharge) to a copy sheet (S) attached to a drum (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83043769A | 1969-06-04 | 1969-06-04 | |
| US83028569A | 1969-06-04 | 1969-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251477A true GB1251477A (en) | 1971-10-27 |
Family
ID=27125340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251477D Expired GB1251477A (en) | 1969-06-04 | 1970-05-28 |
Country Status (11)
| Country | Link |
|---|---|
| BE (1) | BE751486A (en) |
| CH (1) | CH509614A (en) |
| CS (1) | CS168528B2 (en) |
| DE (1) | DE2027551C3 (en) |
| ES (1) | ES380378A1 (en) |
| FR (1) | FR2049827A5 (en) |
| GB (1) | GB1251477A (en) |
| NL (1) | NL166137C (en) |
| NO (1) | NO133049C (en) |
| SE (1) | SE359664B (en) |
| SU (1) | SU419061A3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3724422A (en) * | 1970-12-14 | 1973-04-03 | Xerox Corp | Magnetic brush developing apparatus |
| JPS5843739B2 (en) * | 1974-10-10 | 1983-09-28 | キヤノン株式会社 | developing device |
| DE2756368C2 (en) * | 1977-12-17 | 1987-02-19 | Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn | Magnetic roller for electrographic copiers with a cylindrical toner carrier tube |
| JPS55142369A (en) * | 1979-04-23 | 1980-11-06 | Canon Inc | Developing device |
-
1970
- 1970-05-28 GB GB1251477D patent/GB1251477A/en not_active Expired
- 1970-05-29 SE SE743970A patent/SE359664B/xx unknown
- 1970-05-29 CH CH810370A patent/CH509614A/en not_active IP Right Cessation
- 1970-05-29 NO NO207070A patent/NO133049C/no unknown
- 1970-05-29 SU SU1445313A patent/SU419061A3/en active
- 1970-06-01 NL NL7007881A patent/NL166137C/en not_active IP Right Cessation
- 1970-06-02 CS CS384770A patent/CS168528B2/cs unknown
- 1970-06-03 FR FR7020260A patent/FR2049827A5/fr not_active Expired
- 1970-06-03 ES ES380378A patent/ES380378A1/en not_active Expired
- 1970-06-04 DE DE19702027551 patent/DE2027551C3/en not_active Expired
- 1970-06-04 BE BE751486D patent/BE751486A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH509614A (en) | 1971-06-30 |
| DE2027551A1 (en) | 1970-12-10 |
| NL166137C (en) | 1981-06-15 |
| FR2049827A5 (en) | 1971-03-26 |
| CS168528B2 (en) | 1976-06-29 |
| NL166137B (en) | 1981-01-15 |
| DE2027551C3 (en) | 1979-09-20 |
| BE751486A (en) | 1970-12-04 |
| NL7007881A (en) | 1970-12-08 |
| ES380378A1 (en) | 1973-04-16 |
| DE2027551B2 (en) | 1978-12-14 |
| NO133049B (en) | 1975-11-17 |
| SU419061A3 (en) | 1974-03-05 |
| NO133049C (en) | 1976-02-25 |
| SE359664B (en) | 1973-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |