JPS568142A - Television image photoengraving method - Google Patents
Television image photoengraving methodInfo
- Publication number
- JPS568142A JPS568142A JP9455279A JP9455279A JPS568142A JP S568142 A JPS568142 A JP S568142A JP 9455279 A JP9455279 A JP 9455279A JP 9455279 A JP9455279 A JP 9455279A JP S568142 A JPS568142 A JP S568142A
- Authority
- JP
- Japan
- Prior art keywords
- film
- photoengraving
- shape
- spot
- scanning lines
- 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.)
- Pending
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
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
- H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Color Television Systems (AREA)
Abstract
PURPOSE:To form a film for photoengraving in which scanning lines are invisible by forming the shape of the spot for exposure to be exposed on the film of a photoengraving scanner into the shape suited for TV signals. CONSTITUTION:At the time of performing exposure on the film of a photoengraving scanner, the shape of a light source on the film is made into the specific shape to make the scanning lines invisible on the film. Namely, the width (a) of the spot in the direction normal to the scanning direction has a value sufficient to negate the scanning lines, e.g. the value 2-3 times the space between the scanning lines and the width (b) of the spot in the scanning direction has a value to sufficiently maintain the resolving power possessed by the television signals. If such spot for exposure is used for a photoengraving scanner, the film for photoengraving in which the scanning lines are invisible may be obtained. It is also possible to make the shape of the spot for exposure into an elliptical shape of the same aspect ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9455279A JPS568142A (en) | 1979-07-25 | 1979-07-25 | Television image photoengraving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9455279A JPS568142A (en) | 1979-07-25 | 1979-07-25 | Television image photoengraving method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8375079A Division JPS568144A (en) | 1978-11-30 | 1979-07-02 | Television image photoengraving appratus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS568142A true JPS568142A (en) | 1981-01-27 |
Family
ID=14113472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9455279A Pending JPS568142A (en) | 1979-07-25 | 1979-07-25 | Television image photoengraving method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS568142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0240347A2 (en) * | 1986-04-03 | 1987-10-07 | Xerox Corporation | Raster output scanners |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965704A (en) * | 1956-02-02 | 1960-12-20 | Philips Corp | Colour television and like systems |
| JPS545443B2 (en) * | 1974-05-28 | 1979-03-16 |
-
1979
- 1979-07-25 JP JP9455279A patent/JPS568142A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965704A (en) * | 1956-02-02 | 1960-12-20 | Philips Corp | Colour television and like systems |
| JPS545443B2 (en) * | 1974-05-28 | 1979-03-16 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0240347A2 (en) * | 1986-04-03 | 1987-10-07 | Xerox Corporation | Raster output scanners |
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