US3234019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for formation of an electrostatic image resistant to deterioration on storage
Assignee: Xerox Corp
•
Filing: 1961-04-10
•
Granted: 1966-02-08
•
Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Hall Richard Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/045; G03G15/14; G03G15/18; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF FORMING A LATENT ELECTROSATIC IMAGE DEVELOPABLE UNDER NORMAL AMBIENT LIGHTING CONDITIONS COMPRISING; (A) COATING A XEROGRAPHIC PLATE COMPRISING A CONDUCTIVE SUBSTRATE AND A PHOTOCONDUCTIVE INSULATING LAYER WITH A PERMANENT ELECTRICALLY INSULATING FILM APPLIED OVER SAID LAYER AND CAPABLE OF SUPPORTING AN APPLIED ELECTROSTATIC CHARGE IN THE SURFACE, (B) SENSITIZING SAID PLATE BY APPLYING A UNIFORM ELECTROSTATIC CHARGE TO THE EXPOSED SURFACE OF SAID FILM, (C) SELECTIVELY ILLUMINATING SAID PLATE IN ACCORDANCE WITH AN IMAGE PATTERN TO EFFECT CHARGE MIGRATION
Claim 2
Independent Claim
82 words
A METHOD OF FORMING A LATENT ELECTROSATIC IMAGE DEVELOPABLE UNDER NORMAL AMBIENT LIGHTING CONDITIONS COMPRISING; (A) COATING A XEROGRAPHIC PLATE COMPRISING A CONDUCTIVE SUBSTRATE AND A PHOTOCONDUCTIVE INSULATING LAYER WITH A PERMANENT ELECTRICALLY INSULATING FILM APPLIED OVER SAID LAYER AND CAPABLE OF SUPPORTING AN APPLIED ELECTROSTATIC CHARGE IN THE SURFACE, (B) SENSITIZING SAID PLATE BY APPLYING A UNIFORM ELECTROSTATIC CHARGE TO THE EXPOSED SURFACE OF SAID FILM, (C) SELECTIVELY ILLUMINATING SAID PLATE IN ACCORDANCE WITH AN IMAGE PATTERN TO EFFECT CHARGE MIGRATION
References Cited (Backward Citations)
CA573773A
Cited
US2297691A
Cited
US2693416A
Cited
US2752833A
Cited
US2781704A
Cited
US2829025A
Cited
US2901348A
Cited
US2825814A
Cited
US3084061A
Cited
US2979403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |