FR1457309A - Electronic method and device for reproducing halftones on electrostencil - Google Patents
Electronic method and device for reproducing halftones on electrostencilInfo
- Publication number
- FR1457309A FR1457309A FR16843A FR16843A FR1457309A FR 1457309 A FR1457309 A FR 1457309A FR 16843 A FR16843 A FR 16843A FR 16843 A FR16843 A FR 16843A FR 1457309 A FR1457309 A FR 1457309A
- Authority
- FR
- France
- Prior art keywords
- electrostencil
- electronic method
- reproducing halftones
- halftones
- reproducing
- 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
- H04N1/40—Picture signal circuits
- H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
- B41C1/141—Forme preparation for stencil-printing or silk-screen printing by cutting or perforation with mechanical means; Electrical spark cutting
-
- 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
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
- H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Facsimile Scanning Arrangements (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR16843A FR1457309A (en) | 1965-05-13 | 1965-05-13 | Electronic method and device for reproducing halftones on electrostencil |
DK182266AA DK118990B (en) | 1965-05-13 | 1966-04-06 | Method and apparatus for making halftone stencils. |
US548306A US3482039A (en) | 1965-05-13 | 1966-05-06 | Method and apparatus for producing a laminar printing form |
SE6478/66A SE345622B (en) | 1965-05-13 | 1966-05-11 | |
DE1522539A DE1522539C3 (en) | 1965-05-13 | 1966-05-11 | Method and device for perforating stencils by spark discharge for the production of halftone prints from an original |
GB20836/66A GB1150623A (en) | 1965-05-13 | 1966-05-11 | Improvements in and relating to a method and apparatus for the production of Grey-Tone Laminar Printing Forme |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR16843A FR1457309A (en) | 1965-05-13 | 1965-05-13 | Electronic method and device for reproducing halftones on electrostencil |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1457309A true FR1457309A (en) | 1966-01-24 |
Family
ID=8578619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR16843A Expired FR1457309A (en) | 1965-05-13 | 1965-05-13 | Electronic method and device for reproducing halftones on electrostencil |
Country Status (6)
Country | Link |
---|---|
US (1) | US3482039A (en) |
DE (1) | DE1522539C3 (en) |
DK (1) | DK118990B (en) |
FR (1) | FR1457309A (en) |
GB (1) | GB1150623A (en) |
SE (1) | SE345622B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1912596A1 (en) * | 1968-03-14 | 1969-10-09 | Zeuthen & Aagaard As | Device for electrically perforating a die |
FR2216738A1 (en) * | 1973-02-05 | 1974-08-30 | Muirhead Inc |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3629496A (en) * | 1969-12-30 | 1971-12-21 | Litton Systems Inc | Encoding of picture signals in photofacsimile |
DE2020639A1 (en) * | 1970-04-28 | 1971-11-18 | Bosch Elektronik Gmbh | Method for the electrical transmission of original images |
US3694570A (en) * | 1970-07-22 | 1972-09-26 | Evgeny Pavlovich Kotov | Automatic engraving machine |
US3801738A (en) * | 1972-07-05 | 1974-04-02 | Instr Corp | Electronic stencil cutter with cutting signal pulse width inversely proportional to the original intensity |
GB1448112A (en) * | 1973-02-13 | 1976-09-02 | Int Publishing Corp Ltd | Electronic screening |
US4106061A (en) * | 1977-03-03 | 1978-08-08 | The Mead Corporation | Density control for ink jet copier |
NL8403926A (en) * | 1984-12-24 | 1986-07-16 | Oce Nederland Bv | METHOD FOR EXPOSING A PHOTOSENSITIVE LAYER AND EXPOSURE DEVICE. |
FR2596226B1 (en) * | 1986-03-19 | 1988-12-02 | Vignon Bernard | METHOD FOR REPRODUCING AN IMAGE FROM THE DIGITIZATION OF THIS IMAGE |
DE69030252T2 (en) * | 1990-01-04 | 1997-09-04 | Eastman Kodak Co | STROKE-FREE PRINTER AND GRAY VALUE RECORDING METHOD |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2777058A (en) * | 1951-09-28 | 1957-01-08 | Fairchild Camera Instr Co | Video-signal tone-adjusting network |
US2881246A (en) * | 1955-09-27 | 1959-04-07 | Fairchild Camera Instr Co | Engraving machine |
NL254939A (en) * | 1959-08-17 | |||
US3393269A (en) * | 1964-04-22 | 1968-07-16 | Zeuthen & Aagaard As | Method and apparatus for producing a laminar printing forme |
-
1965
- 1965-05-13 FR FR16843A patent/FR1457309A/en not_active Expired
-
1966
- 1966-04-06 DK DK182266AA patent/DK118990B/en unknown
- 1966-05-06 US US548306A patent/US3482039A/en not_active Expired - Lifetime
- 1966-05-11 DE DE1522539A patent/DE1522539C3/en not_active Expired
- 1966-05-11 GB GB20836/66A patent/GB1150623A/en not_active Expired
- 1966-05-11 SE SE6478/66A patent/SE345622B/xx unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1912596A1 (en) * | 1968-03-14 | 1969-10-09 | Zeuthen & Aagaard As | Device for electrically perforating a die |
FR2216738A1 (en) * | 1973-02-05 | 1974-08-30 | Muirhead Inc |
Also Published As
Publication number | Publication date |
---|---|
DE1522539C3 (en) | 1978-05-24 |
SE345622B (en) | 1972-06-05 |
DE1522539A1 (en) | 1969-09-11 |
DK118990B (en) | 1970-10-26 |
DE1522539B2 (en) | 1977-09-22 |
US3482039A (en) | 1969-12-02 |
GB1150623A (en) | 1969-04-30 |
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