US3672330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing a latent electrostatic image
Assignee: Fujifilm Holdings Corp
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Filing: 1970-06-04
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Granted: 1972-06-27
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Expires: 1990-06-04
Abstract
Abstract A cascade apparatus for developing a latent electrostatic image which comprises flowing a cascade developer between the upper surface of a photoconductive insulating layer containing a latent electrostatic image and a flexible developing electrode positioned so as to cover said layer by gravity and developing the latent electrostatic image while maintaining a constant and small space between said developing electrode and latent electrostatic image surface of the photoconductive insulating layer.
Inventors
- 👤 Masamichi Sato
- 👤 Isoji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:42
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0801; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
150 words
Apparatus for developing an electrostatic image on a photoconductive insulating layer comprising means for supporting said insulating layer so that at least a portion thereof is downwardly slanting; a flexible developing electrode; means for supporting said electrode so that the upper portion of said electrode is fixedly disposed with respect to and removed from said insulating layer and substantially the remainder of said electrode including the lower portion thereof lies upon at least part of said downwardly slanting portion of said photoconductive insulating layer; means for cascading a developer between said flexible developing electrode and said downwardly slanting portion of said photoconductive insulating layer so that all portions of said developing electrode are capable of being pushed away from the photoconductive insulating layer by the weight of said developer falling down said downwardly slanting portion whereby the flow of the developer is substantially continuous and smooth to effect said developing.
Claim 2
Dependent Claim
150 words
Apparatus for developing an electrostatic image on a photoconductive insulating layer comprising means for supporting said insulating layer so that at least a portion thereof is downwardly slanting; a flexible developing electrode; means for supporting said electrode so that the upper portion of said electrode is fixedly disposed with respect to and removed from said insulating layer and substantially the remainder of said electrode including the lower portion thereof lies upon at least part of said downwardly slanting portion of said photoconductive insulating layer; means for cascading a developer between said flexible developing electrode and said downwardly slanting portion of said photoconductive insulating layer so that all portions of said developing electrode are capable of being pushed away from the photoconductive insulating layer by the weight of said developer falling down said downwardly slanting portion whereby the flow of the developer is substantially continuous and smooth to effect said developing.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1 where said flexible developing electrode comprises a flexible sheet.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1 where said flexible developing electrode comprises a screen composed of multiple wires.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 where said developing electrode comprises a plurality of ribbons.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 1 including an insulating layer interposed between said photoconductive layer and said electrode.
Claim 7
Dependent Claim
16 words
Apparatus as in claim 1 where said developing electrode comprises a nylon screen plated with silver.
Claim 8
Dependent Claim
37 words
Apparatus as in claim 1 where said developing electrode comprises a flexible electric insulating sheet having disposed thereon an electric conducting layer, said insulating sheet being disposed adjacent said downwardly slanting portion of said photoconductive insulating layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |