GB1239635A - - Google Patents
Info
- Publication number
- GB1239635A GB1239635A GB1239635DA GB1239635A GB 1239635 A GB1239635 A GB 1239635A GB 1239635D A GB1239635D A GB 1239635DA GB 1239635 A GB1239635 A GB 1239635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rollers
- carrier particles
- drum
- spaced
- oct
- 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
- G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
1,239,635. Developing apparatus. FUJI SHASHIN FILM K. K. Oct. 2, 1968 [Oct. 17, 1967], No.46825/68. Heading G2H. A dry type electrostatic latent image development apparatus comprises a plurality of rotatable rollers 21, containing conductive material and acting as development electrodes, which are spaced by a small distance from a photo-conductive layer bearing a latent image located on the surface of a drum 1. The rollers are spaced from each other by a distance smaller than the diameter of the carrier particles in a developer 31, which is fed to the rollers 21 on the side facing away from the drum 1, by means of an endless conveyer 33. The toner particles adhere to the rollers which may be of the same material as the carrier particles and are transferred to the drum 1 thereby. The carrier particles, which cannot pass between the rollers 21, fall back into the development unit 3. In another embodiment the rollers are spaced between each other by a distance exceeding the diameter of the carrier particles but a screening plate (4) Fig. 5 (not shown), prevents the carrier particles from reaching the drum 1. A magnetic brush may be used to apply developer to the rollers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6681067 | 1967-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1239635A true GB1239635A (en) | 1971-07-21 |
Family
ID=13326568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1239635D Expired GB1239635A (en) | 1967-10-17 | 1968-10-02 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3537427A (en) |
| BE (1) | BE722040A (en) |
| DE (1) | DE1803415A1 (en) |
| FR (1) | FR1597562A (en) |
| GB (1) | GB1239635A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855969A (en) * | 1973-03-02 | 1974-12-24 | Addressograph Multigraph | Quality control of electrostatic image developer mix |
| US4553827A (en) * | 1983-06-30 | 1985-11-19 | Ricoh Company, Ltd. | Electrophotographic copying apparatus including an enlarged image developing station |
-
1968
- 1968-10-02 GB GB1239635D patent/GB1239635A/en not_active Expired
- 1968-10-09 BE BE722040D patent/BE722040A/xx unknown
- 1968-10-15 FR FR1597562D patent/FR1597562A/fr not_active Expired
- 1968-10-16 DE DE19681803415 patent/DE1803415A1/en active Pending
- 1968-10-17 US US768267A patent/US3537427A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1803415A1 (en) | 1969-10-09 |
| FR1597562A (en) | 1970-06-29 |
| US3537427A (en) | 1970-11-03 |
| BE722040A (en) | 1969-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |