US3440428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image converter using charged photoemissive layer
Assignee: Xerox Corp
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Filing: 1966-09-29
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Granted: 1969-04-22
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Kazan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:11
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN IMAGE CONVERTER COMPRISING: (A) A TRANSPARENT INSULATING SUPPORT PLATE, (B) A SET OF INTERDIGITAL CONDUCTING TRANSPARENT ELECTRODES ON THE SURFACE OF SAID INSULATING SUPPORT PLATE, (C) A VOLTAGE SOURCE CONNECTED TO SAID ELECTRODES, (D) AN ELECTROLUMINESCENT PHOSPOR LAYER COATING SAID ELECTRODES AND SAID SUPPORT PLATE, (E) A FIELD EFFECT SEMICONDUCTOR LAYER COATING SAID ELECTROLUMINESCENT PHOSPHOR LAYER, (F) AN INSULATOR LAYER COATING SAID FIELD EFFECT SEMICONDUCTOR LAYER, (G) A MOSIAC OF PHOTOEMITTING ELEMENTS ADJACENT SAID INSULATOR LAYER, AND (H) COLLECTOR MEANS ADJACENT SAID MOSAIC OF PHOTOEMITTING ELEMENTS TO ATTRACT AND CAPTURE EMITTED ELECTRONS FROM SAID MOSIAC WHEREBY SAID MOSIAC WILL ACQUIRE A CHARGE PATTERN ON EXPOSURE OF SAID MOSIAC TO AN ELECTROMAGNETIC INPUT PATTERN AND WILL BY ITS FIELD EFFECT ON SAID SEMICONDUCTOR LAYER ALTER THE LOCAL CONDUCTIVITY OF SAID SEMICONDUCTOR TO ALLOW CURRENT FLOW IN SAID ELECTROLUMINESCENT PHOSPHOR LAYER CAUSING IT TO EMIT A LIGHT PATTERN CORRESPONDING TO SAID INPUT PATTERN.
Claim 2
Dependent Claim
152 words
AN IMAGE CONVERTER COMPRISING: (A) A TRANSPARENT INSULATING SUPPORT PLATE, (B) A SET OF INTERDIGITAL CONDUCTING TRANSPARENT ELECTRODES ON THE SURFACE OF SAID INSULATING SUPPORT PLATE, (C) A VOLTAGE SOURCE CONNECTED TO SAID ELECTRODES, (D) AN ELECTROLUMINESCENT PHOSPOR LAYER COATING SAID ELECTRODES AND SAID SUPPORT PLATE, (E) A FIELD EFFECT SEMICONDUCTOR LAYER COATING SAID ELECTROLUMINESCENT PHOSPHOR LAYER, (F) AN INSULATOR LAYER COATING SAID FIELD EFFECT SEMICONDUCTOR LAYER, (G) A MOSIAC OF PHOTOEMITTING ELEMENTS ADJACENT SAID INSULATOR LAYER, AND (H) COLLECTOR MEANS ADJACENT SAID MOSAIC OF PHOTOEMITTING ELEMENTS TO ATTRACT AND CAPTURE EMITTED ELECTRONS FROM SAID MOSIAC WHEREBY SAID MOSIAC WILL ACQUIRE A CHARGE PATTERN ON EXPOSURE OF SAID MOSIAC TO AN ELECTROMAGNETIC INPUT PATTERN AND WILL BY ITS FIELD EFFECT ON SAID SEMICONDUCTOR LAYER ALTER THE LOCAL CONDUCTIVITY OF SAID SEMICONDUCTOR TO ALLOW CURRENT FLOW IN SAID ELECTROLUMINESCENT PHOSPHOR LAYER CAUSING IT TO EMIT A LIGHT PATTERN CORRESPONDING TO SAID INPUT PATTERN.
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |