GB1163919A - Device for Automatic Sequential Image Transposition and High Density Microfacsimile System - Google Patents
Device for Automatic Sequential Image Transposition and High Density Microfacsimile SystemInfo
- Publication number
- GB1163919A GB1163919A GB5536166A GB5536166A GB1163919A GB 1163919 A GB1163919 A GB 1163919A GB 5536166 A GB5536166 A GB 5536166A GB 5536166 A GB5536166 A GB 5536166A GB 1163919 A GB1163919 A GB 1163919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electron beam
- astigmatism
- cross
- scanned
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
- H04N1/3872—Repositioning or masking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Electron Beam Exposure (AREA)
Abstract
1,163,919. Facsimile system. MINNESOTA MINING & MFG. CO. 9 Dec., 1966, No. 55361/66. Heading H4F. [Also in Division H1] The Specification describes a microfacsimile system, whereby engineering drawings, for example, scanned with a resolution of 1000 lines are directly recorded by one electron beam of 10 Á diameter with a resolution of 100 lines/mm. Means for producing such a sharp electron beam are described together with means for focusing it and checking for astigmatism. Only part of the available recording area may be used for any one reproduction, means determining the end of the recording of a first image and causing the movement of the electron beam to a different area of the recording area for the recording of a second image. The drawing &c. is scanned in a picture generator 101, Fig. 1, by a 1000 line raster and the resultant video signal is modulated on to a carrier at 104, redetected at 107 and used to amplitude modulate the flow of a stream of electrons from a cathode-ray tube cathode 10, Fig. 2. A first focus of the electron beam is obtained between grid 11 and anode 12, a second at 15 between magnetic lenses 16 and 17 and a third having the desired beam diameter of 10 Á in the plan of the scan-field 19. Astigmatism of the beam is controlled by a stigmater 20, comprising Fig. 3, a ring of electrostatically charged, mutually insulated rods 26 axially surrounding and parallel with the beam axis. To determine if the beam is in focus and free from astigmatism, the normal workpiece 19, on which the drawing is directly reproduced by the electron beam, is replaced by a focusing target 120, Fig. 4, comprising a vapour deposited gold cross 119 on an aluminium substrate. The cross has arms of less thickness than the beam width-i.e. less than 10 Á. As the target is scanned by the electron beam, secondary electrons are produced by the cross, which are fed to a T.V. monitor 122. Astigmatism or bad focusing of the beam will show in the arms of the displayed cross not being equal. A line counter 110 determines when one picture has been recorded and actuates device 111 for adjusting the bias on the deflection signals applied to the cathode-ray tube so as to shift the electron beam to its rear area.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US585206A US3333057A (en) | 1966-10-07 | 1966-10-07 | High density microfacsimile system |
GB5536166A GB1163919A (en) | 1966-12-09 | 1966-12-09 | Device for Automatic Sequential Image Transposition and High Density Microfacsimile System |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5536166A GB1163919A (en) | 1966-12-09 | 1966-12-09 | Device for Automatic Sequential Image Transposition and High Density Microfacsimile System |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1163919A true GB1163919A (en) | 1969-09-10 |
Family
ID=10473694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5536166A Expired GB1163919A (en) | 1966-10-07 | 1966-12-09 | Device for Automatic Sequential Image Transposition and High Density Microfacsimile System |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1163919A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0070677A2 (en) * | 1981-07-14 | 1983-01-26 | Dai Nippon Printing Co., Ltd. | Video printing apparatus |
FR2528588A1 (en) * | 1982-06-11 | 1983-12-16 | Elscint France | METHOD AND DEVICE FOR COMPOSING AND RECAPING MULTIPLE ELECTRONIC IMAGES ON A PHOTOSENSITIVE SURFACE |
FR2565705A1 (en) * | 1984-06-08 | 1985-12-13 | Gerber Scientific Instr Co | LASER IMAGE FORMING SYSTEM AND METHOD FOR REALIZING THE IMPOSITION OF PAGES FOR PRINTING |
CN117146748A (en) * | 2023-10-30 | 2023-12-01 | 中国铁建电气化局集团有限公司 | Method and device for measuring hard cross beam of overhead contact system |
-
1966
- 1966-12-09 GB GB5536166A patent/GB1163919A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0070677A2 (en) * | 1981-07-14 | 1983-01-26 | Dai Nippon Printing Co., Ltd. | Video printing apparatus |
EP0070677A3 (en) * | 1981-07-14 | 1986-12-30 | Dai Nippon Printing Co., Ltd. | Video printing apparatus |
FR2528588A1 (en) * | 1982-06-11 | 1983-12-16 | Elscint France | METHOD AND DEVICE FOR COMPOSING AND RECAPING MULTIPLE ELECTRONIC IMAGES ON A PHOTOSENSITIVE SURFACE |
DE3320545A1 (en) * | 1982-06-11 | 1983-12-29 | Elscint Inc., 02215 Boston, Mass. | METHOD AND DEVICE FOR FORMING A MULTIPLE NUMBER OF ELECTRONIC IMAGES ON A LIGHT-SENSITIVE SURFACE |
US4575766A (en) * | 1982-06-11 | 1986-03-11 | Elscint, Inc. | Process and apparatus for forming multiple electronic images on a photosensitive surface |
FR2565705A1 (en) * | 1984-06-08 | 1985-12-13 | Gerber Scientific Instr Co | LASER IMAGE FORMING SYSTEM AND METHOD FOR REALIZING THE IMPOSITION OF PAGES FOR PRINTING |
CN117146748A (en) * | 2023-10-30 | 2023-12-01 | 中国铁建电气化局集团有限公司 | Method and device for measuring hard cross beam of overhead contact system |
CN117146748B (en) * | 2023-10-30 | 2024-01-05 | 中国铁建电气化局集团有限公司 | Method and device for measuring hard cross beam of overhead contact system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |