US3331355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic developing apparatus
Assignee: Xerox Corp
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Filing: 1965-01-04
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Granted: 1967-07-18
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Donalies
- 👤 Richard C Vock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0801; G03G15/0806; G03G15/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A XEROGRAPHIC REPRODUCING APPARATUS WHEREIN LATENT ELECTROSTATIC IMAGES OF COPY ARE FORMED ON THE SURFACE OF A XEROGRAPHIC PLATE, DEVELOPING MEANS FOR DEVELOPING THE ELECTROSTATIC IMAGE COMPRISING IN COMBINATION: (A) A WEB-LIKE DONOR MEMBER ON WHICH TO SUPPORT A UNIFORMLY DISTRIBUTED QUANTITY OF ELECTROSCOPIC DEVELOPER POWDER, (B) POWDER LOADING MEANS FOR LOADING SAID DONOR WITH A UNIFORMLY DISTRIBUTED QUANTITY OF ELECTROSCOPIC DEVELOPER POWDER INCLUDING: (1) MEANS TO DISCHARGE A QUANTITY OF TWO-COMPONENT CASCADE DEVELOPER MIX OF POWDER AND CARRIER FROM A SOURCE OF SUPPLY ABOVE AN ADVANCING AREA OF DONER OUT OF CONTACT WITH THE XEROGRAPHIC PLATE, (2) AN ELECTRODE ARRAY OF SPACED APART MEMBERS SUPPORTED BETWEEN SAID SOURCE OF SUPPLY AND SAID DONOR IN THE DEVELOPER PATH, AND (3) POTENTIAL MEANS CONNECTED TO SAID ELECTRODE ARRAY WHEREBY TO MAINTAIN SAID ARRAY AT A POTENTIAL SUFFICIENT TO CHARGE THE POWDER IN SAID MIX, AND
Claim 2
Dependent Claim
145 words
IN A XEROGRAPHIC REPRODUCING APPARATUS WHEREIN LATENT ELECTROSTATIC IMAGES OF COPY ARE FORMED ON THE SURFACE OF A XEROGRAPHIC PLATE, DEVELOPING MEANS FOR DEVELOPING THE ELECTROSTATIC IMAGE COMPRISING IN COMBINATION: (A) A WEB-LIKE DONOR MEMBER ON WHICH TO SUPPORT A UNIFORMLY DISTRIBUTED QUANTITY OF ELECTROSCOPIC DEVELOPER POWDER, (B) POWDER LOADING MEANS FOR LOADING SAID DONOR WITH A UNIFORMLY DISTRIBUTED QUANTITY OF ELECTROSCOPIC DEVELOPER POWDER INCLUDING: (1) MEANS TO DISCHARGE A QUANTITY OF TWO-COMPONENT CASCADE DEVELOPER MIX OF POWDER AND CARRIER FROM A SOURCE OF SUPPLY ABOVE AN ADVANCING AREA OF DONER OUT OF CONTACT WITH THE XEROGRAPHIC PLATE, (2) AN ELECTRODE ARRAY OF SPACED APART MEMBERS SUPPORTED BETWEEN SAID SOURCE OF SUPPLY AND SAID DONOR IN THE DEVELOPER PATH, AND (3) POTENTIAL MEANS CONNECTED TO SAID ELECTRODE ARRAY WHEREBY TO MAINTAIN SAID ARRAY AT A POTENTIAL SUFFICIENT TO CHARGE THE POWDER IN SAID MIX, AND
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |