Patent US3662711A successfully refreshed from Google Patents.
US3662711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development apparatus
Assignee: Xerox Corp
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Filing: 1970-03-19
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Granted: 1972-05-16
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Expires: 1990-03-19
Abstract
Abstract An apparatus for developing a surface bearing a latent electrostatic image to be developed wherein developer material is cascaded between the image bearing surface and a movable electrode member. The electrode member carries to the development zone a supply of toner particles on its surface which provides enhanced development results. As the carrier particles in the developer flow become depleted of toner in the development zone, the toner supplied by the endless electrode is attracted to the carrier for retonerization directly in the development zone. Also, the impact of the carrier upon the electrode releases toner from the electrode to effect enhanced development results with a relatively low flow of developer material.
Inventors
- 👤 Frederick W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:06
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0801
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
147 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising housing means mounted adjacent an image bearing surface to be developed and adapted to support a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, and supply means mounted adjacent said image bearing surface for allowing the flow of developer material to pass therebetween and supporting a supply of toner particles on a surface thereof in confrontation to the image bearing surface to add toner to the flow of developer material for tonerization thereof and to release free toner for attraction to the image bearing surface for enhanced development.
Claim 2
Independent Claim
147 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising housing means mounted adjacent an image bearing surface to be developed and adapted to support a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, and supply means mounted adjacent said image bearing surface for allowing the flow of developer material to pass therebetween and supporting a supply of toner particles on a surface thereof in confrontation to the image bearing surface to add toner to the flow of developer material for tonerization thereof and to release free toner for attraction to the image bearing surface for enhanced development.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 wherein said supply means comprises a conductive member and is coupled to a source of electrical potential.
Claim 4
Independent Claim
150 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising, housing means mounted adjacent an image bearing surface to be developed and adapted to support a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, and supply means comprising a conductive member mounted adjacent said image bearing surface for allowing the flow of developer material to pass therebetween and supporting a supply of toner particles on the surface thereof in confrontation to the image bearing surface to add toner to the flow of developer material for tonerization thereof and to release free toner for attraction to the image-bearing surface for enhanced development.
Claim 5
Independent Claim
150 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising, housing means mounted adjacent an image bearing surface to be developed and adapted to support a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, and supply means comprising a conductive member mounted adjacent said image bearing surface for allowing the flow of developer material to pass therebetween and supporting a supply of toner particles on the surface thereof in confrontation to the image bearing surface to add toner to the flow of developer material for tonerization thereof and to release free toner for attraction to the image-bearing surface for enhanced development.
Claim 6
Dependent Claim
18 words
The apparatus of claim 3 further comprising means to move the endless surface past the image bearing surface.
Claim 7
Dependent Claim
28 words
The apparatus of claim 4 further comprising tonerizing means positioned adjacent said surface to supply toner for adherence thereon for movement into confrontation to the image bearing surface.
Claim 8
Independent Claim
190 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising housing means mounted adjacent an image bearing surface for supporting a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, surface means positioned adjacent said flow of developer material and adapted to be moved from a first position to a second position in confrontation to the image bearing surface to allow the flow of developer material to pass therebetween, tonerizing means mounted adjacent said first position to supply a quantity of toner to said surface means for adherence thereon, and means to move said surface means from said first position to said second position to bring the quantity of toner adhering to said surface means into contact with the flow of developer material to add toner thereto and to release toner for adherence to the image bearing surface for increased development thereof.
Claim 9
Independent Claim
190 words
An apparatus for developing a surface bearing a latent electrostatic image to be developed comprising housing means mounted adjacent an image bearing surface for supporting a supply of developer material including carrier particles having electroscopic toner triboelectrically attracted thereto, said housing means including circulating means operatively connected to the supply of developer material to create a flow of at least part of the developer material past the image bearing surface for effecting adherence of toner thereto for development, surface means positioned adjacent said flow of developer material and adapted to be moved from a first position to a second position in confrontation to the image bearing surface to allow the flow of developer material to pass therebetween, tonerizing means mounted adjacent said first position to supply a quantity of toner to said surface means for adherence thereon, and means to move said surface means from said first position to said second position to bring the quantity of toner adhering to said surface means into contact with the flow of developer material to add toner thereto and to release toner for adherence to the image bearing surface for increased development thereof.
Claim 10
Dependent Claim
20 words
The apparatus of claim 6 wherein said surface means comprises a conductive material and is coupled to an electrical potential.
Claim 11
Dependent Claim
34 words
The apparatus of claim 6 wherein said circulation means further comprises means to create a second flow of a part of the supply of developer material past said surface means adjacent said first position.
Claim 12
Dependent Claim
37 words
The apparatus of claim 8 wherein said tonerizing means comprises an electrode member coupled to an electrical potential to strip a quantity of toner from the second flow of developer material for adherence to said surface means.
Claim 13
Dependent Claim
17 words
The apparatus of claim 6 wherein said surface means comprises a member having an endless outer surface.
Claim 14
Dependent Claim
27 words
The aPparatus of claim 6 wherein said circulating means directs the flow of developer material into respective impact with the image bearing surface and said surface means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |