US3694070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying system featuring scanning illumination elements
Assignee: International Business Machines Corp
•
Filing: 1970-08-24
•
Granted: 1972-09-26
•
Expires: 1990-08-24
Abstract
Abstract A copying system includes scanning illumination elements that focus the light only on the area of the original document that is actually being optically scanned by the system. A first embodiment has rotating reflectors cooperating with stationary lamp elements to project a line of light onto an original document and a rotating mirror receiving image information from the original document and transmitting the same through a lens element to an image plane. A second embodiment has a rotating mirror that receives light from stationary lamp elements in a first portion of the mirror, reflects a line of light to the original document and receives image information from the original document in a second portion of the mirror for transmission through a lens element to an image plane.
Inventors
- 👤 Edwin L Libby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
230 words
A system for copying apparatus operable during a scan operation to scan and transmit image information from an original document comprising: means for supporting said original document for scanning; at least one energizable lamp element arranged for illumination of said document; means fixedly mounting said lamp element so that it remains stationary during operation of said system; a projection system including at least a lens element for conveying information from said original document to an imaging area during a scanning operation; a scanning reflector means positioned in the path of travel of image information reflected from said document for receiving said image information and transmitting said image information to said lens element for conveyance to a said imaging area during a scan operation; means for continually rotating said scanning reflector means during a scan operation to effect scanning of successive areas of said original document and conveyance of an image thereon to said imaging area; means for continually energizing said lamp element during a said scan operation; movable lamp reflector means positioned behind said lamp element for projecting concentrated light energy toward said original document during a said scan operation; and means for continually moving said lamp reflector means to convey said concentrated light energy toward said successive areas of said original document in synchronism with rotation of said scanning reflector means to discriminately illuminate each area during scanning thereof.
Claim 2
Independent Claim
230 words
A system for copying apparatus operable during a scan operation to scan and transmit image information from an original document comprising: means for supporting said original document for scanning; at least one energizable lamp element arranged for illumination of said document; means fixedly mounting said lamp element so that it remains stationary during operation of said system; a projection system including at least a lens element for conveying information from said original document to an imaging area during a scanning operation; a scanning reflector means positioned in the path of travel of image information reflected from said document for receiving said image information and transmitting said image information to said lens element for conveyance to a said imaging area during a scan operation; means for continually rotating said scanning reflector means during a scan operation to effect scanning of successive areas of said original document and conveyance of an image thereon to said imaging area; means for continually energizing said lamp element during a said scan operation; movable lamp reflector means positioned behind said lamp element for projecting concentrated light energy toward said original document during a said scan operation; and means for continually moving said lamp reflector means to convey said concentrated light energy toward said successive areas of said original document in synchronism with rotation of said scanning reflector means to discriminately illuminate each area during scanning thereof.
Claim 3
Dependent Claim
90 words
The system of claim 1, further comprising: a second lamp element; means for continually energizing both said lamp elements during a said scan operation; a second movable lamp reflector means positioned behind said second lamp element for projecting concentrated light energy toward said original document during a said scan operation; and means for continually moving both said lamp reflector means to convey concentrated light energy from both lamp elements toward successive areas of said original document in synchronism with rotation of said scanning reflector means during a said scan operation.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |